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Posted by rustywasm 15 hours ago

Watch Los Angeles get built, one building at a time (1880–2026)(lax-skyline.parcelscope.net)
291 points | 143 comments
thomasfl 5 minutes ago|
This shows not only how highly inefficient the land use is in LA, it also shows when it started happening. Towns that were planned before cars were introduced, have a much more efficient use of land. I.e. less space used for roads, but more greenery and the same amount of people and businesses. Barcelona and Paris was planned and built around 70 years before cars become commonplace. The city of the future is built around peoples quality of life and what is good for the economy, except the car industry. US car industry is slowly dying anyway, so the US should start making the country just as attractive to live in as Europe. Disclaimer: I am the founder of the architectural uprising in Norway.
epistasis 13 hours ago||
It's amazing how little has changed in recent years in LA. The massive downzoning of the 1980s had its effect: prevent efficient land use, and channel money into the hands of landlords and homeowners from all newcomers.

LA is a ridiculously unaffordable place to live, not because it's nice, but because of an artificial shortage of built space, due to a monopoly on the permission to build.

slg 10 hours ago||
>The massive downzoning of the 1980s...

To put numbers to this for those who aren't aware, LA was zoned for roughly 10 million people in the 1960s and by the 1980s it was zoned for roughly 4 million. It's part of the reason the city has had population growth slow to a crawl. It was decided some 40 plus years ago that LA should stay under 4 million people, so it has even til today. But the number of people who want to live in LA is constantly growing, so housing prices continue to rise and as a result lower income people are slowly but surely being pushed out of their homes and out of the city entirely.

lwansbrough 10 hours ago|||
Same story in San Francisco of course, and the rest of the US pretty much aside from a few cities in recent years.
TomGarden 10 hours ago|||
At least we have parking lots. Ah, so many parking lots
hackernud3s 8 hours ago|||
There's still Houston but that's it as far as I know.
pjerem 3 hours ago||||
My impression of LA when I got there was that I would never live there, even in the nicest spots. Which confirms my intuition that the richest have no taste.

Also it’s an American city made for cars so it doesn’t help me to like it.

enopod_ 2 hours ago|||
Interesting, I did not know that. Sure helped create the massive urban sprawl that LA is today, I mean it's basically one city all the way to San Bernardino, almost 100 km to the east.
kfarr 13 hours ago|||
And don’t forget prop 13, there’s negative incentive for property to change hands and develop.
bingohbangoh 10 hours ago|||
Do people really think that if we revoked Prop 13 that other taxes would go down with the new money from property taxes?

Or do we think that property taxes would go up while other taxes stay put?

This feels like the argument at play when people criticize Prop 13. Not saying it’s good but California hasn’t ever cut taxes meaningfully and I’m not convinced raising property taxes would solve anything. California would still be expensive to live in.

andrewmutz 10 hours ago|||
Multiple good things would happen without prop 13:

People would move more instead of being locked in to a low effective property tax.

The tax burden would be much fairer: instead of the police and schools being funded by newcomers, everyone would be contributing their fair share to fund the city, instead of the longest tenure residents mooching off the rest of us.

Unproductive use of land would be discouraged. If a tract became highly desirable, it would be expensive to let it sit in an unproductive form

Cities could raise taxes as high as their residents wanted them to be, instead of being limited by the opinions of non-residents. Some people want to have better funded police and schools, and local government would actually be allowed to deliver that. Citizens who didnt want to live in expensive cities could vote with their feet to cheaper towns.

anonymousiam 8 hours ago||
Under Proposition 19, some people can still move without penalty, as long as they're over age 55, and move to a new property located in California.

https://www.ocassessor.gov/tax-saving-programs/savings-senio...

bloppe 9 hours ago||||
I've never heard anybody say anything like that when criticizing prop 13. It usually has more to do with housing prices and the fact that 2 people with the same home value should pay the same in property taxes. If you wanted to create a hereditary landed gentry, it would be hard to come up with a better policy to achieve that than prop 13.
jrmg 10 hours ago||||
To keep tax revenue equal, property taxes for those who purchased recently would go down, and property taxes for those who’d purchased in the past would go up.

The housing market would become more liquid because people would move out of homes if their values rose too much and they could no longer afford the taxes. This would be a shock initially, but over time it would just be seen as part of life like it is in other areas: mostly, empty nesters would downsize to a cheaper, smaller house with lower taxes. Gentrification might be more problematic though.

In practice, probably some phased rebalancing would have to happen to avoid the sudden economic shock, but, politics notwithstanding, it’s not crazy to suggest it could be done and that the end state might be overall ‘better’ for most people. The end state would be how property taxes work almost everywhere else.

tikhonj 7 hours ago||||
Prop 13 massively distorts the real estate market and creates some strong incentives for home owners. Those distortions and incentives would go away regardless of whether abolishing Prop 13 led to a net increase or decrease in total taxes.
groundzeros2015 10 hours ago|||
It would increase liquidity in the housing market.
syspec 11 hours ago|||
Do you own your home? Here in Ca? You know that property tax is 1.4ish % and goes up by 2% a year, pretty much no matter what?

On a 1.5M house, that's starting at 17K a year and each year it goes up 2%, so it compounds.

That's 17k a year Just to stay in your own home.

People who don't pay property taxes here in ca, act like prop 13 means zero property taxes

isubkhankulov 10 hours ago|||
Yes, your property tax is high ($17k) because of prop 13 - you are effectively subsidizing others who have sat on their residential and commercial property for 20-30+ years who are paying 25-50% of what you pay for any similar property in the same calendar year!

Your property tax goes up by 2% of your , guessing (relatively recent?) purchase price, and theirs goes up 2% of a much smaller base due to prop 13.

They have no incentive to move, downgrade. And they often use trusts to pass this tax base down to their kids. It’s feels like icky European feudalism.

Again i’m emphasizing that this goes for both residential and commercial buildings.

fatcatsbestcats 4 hours ago|||
I agree with everything you’ve said, but one clarification: you don’t even need a trust to pass the tax break down to your kid when you die. Sure, a trust can streamline that process, but it’s not required. At least everyone lucky enough to inherit benefits, not just those whose parents had the foresight (and the means) to create a trust.
cucumber3732842 10 hours ago|||
> It’s feels like icky European feudalism.

Pairs nicely with the permitting processes that basically boil down to "thou shalt pay the guild"

jedberg 8 hours ago||||
> Do you own your home? Here in Ca?

Yes and yes.

And I pay 10K less a year than my neighbor for the same value house. And I pay 10K more a year than my other neighbor.

I get a huge advantage from Prop 13, but I still think it needs to get replaced with a much fairer system.

dbmikus 11 hours ago||||
That is close to the average rate of inflation, though. Doesn't seem unreasonable to me.
codemac 11 hours ago||||
They go up much more than 2% in literally every other state, California is the cheapest place to own property for >10 years.

You can argue against property taxes entirely, but Prop 13 definitely means that families, businesses, and all property owners work very hard to never sell, never reassess, and never change their tax rate.

tikhonj 7 hours ago||||
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stouset 11 hours ago|||
While I think the goal of Prop 13 is laudable, a few reforms would cut some of the biggest downsides: it should be be for primary residences, where the named owner is the primary resident.

This would eliminate the tax break for commercial property, prevent it from being abused for second homes, and avoid the property trust shenanigans that have allowed some properties to change hands without a reset in the taxes paid.

lokar 8 hours ago||
I’m not sure why people are downvoting (without commenting), but I agree.

The main selling point of prop13 was a real problem: rapidly increasing values were driving up taxes so fast that long time residents (of modest means) were being forced out.

I don’t think it’s entirely unreasonable to have some policy that attempts to protect people living in their primary residence from rapid tax increases they can’t afford.

tikhonj 7 hours ago|||
It really isn't. You could—and we did!—solve that problem by letting people defer property tax payments or borrow against their equity. California literally has a property tax postponment program for seniors. If we just wanted to keep people from being pushed out of their homes by rising house prices, we'd just expand that program.

The point of Prop 13 is to let people have their cake and eat it too: you get to keep the equity you gain from increased housing prices, but not pay the property tax that comes with them.

tzs 4 hours ago||
With postponement you then can get the opposite problem of people getting stuck in their houses because if they sold they would have a huge deferred tax.

The approach in Washington works well. There is a senior property tax exemption based on age and disposable income. To qualify in King County (where Seattle is) in 2027 you need to be 61+ and have a household disposable income under $101k.

That gets you (1) a freeze on the assessed value for taxes equal to the current assessed value, and (2) an exemption from the statewide school tax and from "excess levies" (basically city and county levies that are voted on).

If income is under between $76k and $89k they also exclude from tax 45% of your assessed value or $70k, whichever is larger, but not more than $200k.

If income is below $76k they exclude 80% of your assessed value or $80k, which is larger.

The income levels are based on median county household income so vary from county to county.

Disposable income is basically everything that goes into AGI plus a list of other things (like any Social Security that is not already in AGI). There are also a bunch of deductions, mostly medical including Medicare premiums, with a $7500 deduction you can elect to take instead of taking any of those specific deduction. Income includes all adults living in the house.

In my county the levies that are not "excess levies" are county roads, sheriff, conservation, mental health, veterans relief, fire district stuff, public utility district stuff, and regional library. The "excess levies" are a couple of school district levies. Overall the excess levies are about 28% of the property taxes in my county. The statewide school levy that is exempt is another 10%, so the bottom line is that the property tax rate for seniors under the income limit is about 60% of the non-senior rate.

Schiendelman 7 hours ago||||
So people were getting so wealthy that they couldn't pay the property tax on their wealth. Yes. The problem is, if you let them decide to tax other people instead of themselves for the spending they themselves approve, they will.
lokar 7 hours ago||
I don’t think you read my comment very carefully
Schiendelman 5 hours ago||
What if I did?
MarkusQ 7 hours ago||||
That makes it sound like the increase was due to some inexorable natural force. California's per capita budget is over twice Arizona's, and they're running a huge deficit on top of that. If taxes are too high, cut taxes. If that means you need to cut spending, cut spending. But don't play "hey, let's tax the other guy!" games and expect that to work.
Schiendelman 7 hours ago|||
A lot of this also comes down to prohibiting growth. In Seattle, every time we build a new building, everyone else's property tax payments decrease. High growth years lead to lower bills. The same would work in California, they just don't build much of anything because they've made it nearly impossible to.
fc417fc802 1 hour ago||
You're not wrong, but the irony of positioning Seattle as having good zoning policies is almost unbearable.
lokar 7 hours ago|||
Prop13 was a big tax cut. The people behind it were minimal government conservative libertarians.

And the state did slash spending in the years following. In particular funding for the university system was hit very hard.

MarkusQ 5 hours ago||
They did not slash spending. At most the rate of increase slowed down for a year or so before continuing to rise at an even faster rate.

https://dof.ca.gov/about-us/history/state-budgets/

refurb 7 hours ago|||
This is a solved problem.

Let people defer increases until their house is sold. This what many states do.

It’s seems insane that we “protect” people whose property taxes are going up because their home is getting so valuable

21asdffdsa12 52 minutes ago|||
There must be a incredible incentive to build "pod-housing" basically take a overpriced suburban home, excavate out into the depths and build sleeper-coffin like homes, then in the morning, its 3 minivan of shuttleb-busses going "to schools" - and in the evening back.

Basically build affordable housing illegally

WD-42 6 hours ago|||
I was just down there and saw multiple massive development projects going on. Like huge new neighborhoods.

Of course they aren’t in LA proper. But it seems like people that want to live in SoCal want the suburbs. You talk like LA is this artificially small place except that it’s more like a neighborhood in the middle of sprawl at an almost unimaginable scale.

Not saying any of this is good. In fact it’s terrible. Personally I feel like the entire LA metro area is about as close as you can get to a real paradise lost on earth. Maybe one of the most naturally beautiful places on the planet, bulldozed over for a maze of 6 lane uncrossable suburban streets and cookie cutter McMansions.

epistasis 6 hours ago||
It only seems like that because every other type of housing is literally banned.

If apartments, even small buildings, were legal in LA, they'd be building them everywhere and they'd immediately fill up.

The Mayor, Karen Bass, accidentally screwed up and made affordable possible to build, as in allowing it to get through the gauntlet of approvals. This resulted in a massive amount of extremely costly affordable housing to get built, merely because the approval couldn't be stopped arbitrarily:

https://www.pacificresearch.org/la-mayor-slowly-dismantles-h...

Ift that sort of project approval was opened up to not only affordable housing, but also for-profit housing, there would be a massive shift in the type of new housing in the area.

MikeNotThePope 11 hours ago|||
I have a dumb question. What is the eventual of efficient land use? Say we bulldoze a bunch of single family homes and get 10x as dense. Now we have 10x as many people per square kilometer. Is that an efficient use of land? Will there be someone saying at 10x population density that it's an inefficient use of space? If yes, what would they propose instead?
xmprt 10 hours ago|||
Why are you acting like there isn't a definition of inefficient. I think "underutilized" is a pretty good definition.

The fact that every single person has a small private park in their front and backyards that's enjoyed maybe a couple hours per day at most is pretty wasteful - if it was shared the utilization would go way up and space used would be way down. Same goes for all the parking lots needed to facilitate car traffic - if we used more efficient/shared options like buses or trams then the parking lots that sit empty most of the day could be replaced with more businesses or houses that allow people to live closer to the services that they need every day.

Meanwhile, we have big bottlenecks in our city downtowns where all the density is packed. Spread that out and things get a lot more efficient - your commute probably goes down too because you can live closer to work. Suburbs don't work without a productive city near them - otherwise they're just rural areas.

epistasis 7 hours ago||||
There's a really great way to think about this that doesn't get enough attention: land rents.

Some plots of land are very valuable due to their location, what you can access, etc. It's pretty straightforward to find out what the monthly cost of land is in any area, either from simple regressions on property values, or empty lot sales, etc.

When the land rent starts to excessively exceed average income of number of households allowed to live on that plot of land, that's pretty inefficient.

Owning land is society letting you say to other people: you're not allowed here. When we restrict land us so that people can not figure out their best use of it, eg 4 families building townhouses together, we start to restrict access to opportunity and basic economic freedom.

mitxela 10 hours ago||||
this is the same fallacy of saying there's no point getting a 10x faster server because you'll just have 10x more load and your site will still be slow.
Schiendelman 7 hours ago||||
If you're really interested: as density increases, population growth decreases. High density places become a sink for populations from elsewhere. You end up reaching a regional equilibrium, where some of the lowest density places start emptying out entirely. Japan is a great example of this, small towns there disappear regularly, as Tokyo grows. Suburban life around Tokyo remains very stable as the center increases and edges decrease.
esikich 10 hours ago|||
Yes, dense cities are more efficient in every way compared to sprawl. Can you articulate what is confusing about this?
gradus_ad 12 hours ago|||
To be fair NYC has taken the opposite approach and rents are extremely high there as well
kccqzy 11 hours ago|||
NYC has had so much downzoning too. The icon of the city, the Empire State Building, now has a floor area ratio about double what’s permitted in that district. Many historical buildings, just like ESB, simply could not have been built today under current zoning regulation.

The city’s original 1916 zoning regulation permitted a hypothetical maximum population of 55 million; after WWII the new zoning regulations essentially limited hypothetical maximum population to a little more than 10 million if everything is fully developed. Recent initiatives like City of Yes did too little to reverse the trend.

returningfory2 11 hours ago||||
NYC zoning is less limiting than LA, but still extremely limiting.
Schiendelman 7 hours ago||||
By what measure are you saying they've taken the opposite approach? It seems to me their approach has been nearly identical, just a little less restrictive.
tokioyoyo 10 hours ago||||
Everything has a gigantic depends* on it when it comes to RE. People want to find one reason why things are bad, but it is always a big bag of mixed things.

When I was in Vancouver, people kept saying if we got rid of rent control, houses will be built, rent will come down. But houses are expensive to build, and they need to make money asap in the “exit economy”. They won’t come up easily, unless they make it cheap to build, which isn’t happening. Rents just started coming down, but so far insignificant amount (I just checked, a place I paid $2500 for in 2019, is going for $3300 after the decrease!), and demand curbing had more influence on it. Personally, I think we shouldn’t force people to move to a different area because rents skyrocketed. I’m all in support of getting paid out though.

People look at Tokyo, and talk about “less-zoned build whatever, and no rent control, thus more or less affordable”. Which also depends*. YoY rents are going up by 10-15% right now, even more in some areas. It’s unreasonable for a good chunk of residents. Speculation is big influx of money from China. But you can actually challenge the rent increase in a good chunk of cases. So it’s a pseudo-rent control.

I’m not saying something is right or wrong, just saying everything has multiple layers of problems.

Schiendelman 7 hours ago||
It's simpler than you're implying. Vancouver, like most cities, has dramatically limited what land you can build on. More than half the city is restricted to nothing larger than individual houses.

Tokyo, similarly, has hit the limit of what they allow to be built under the highest density of their stepped national zoning levels.

oblio 12 hours ago|||
Nah, watch this if you have time: https://www.youtube.com/watch?v=kpK5HiCKfgU

At least watch this money shot: https://youtu.be/kpK5HiCKfgU?si=YNQBxsn15NxGdQQ0&t=272 (wait for the video to reveal the construction years)

As Max Fisher puts it: American cities have been frozen in amber.

epistasis 6 hours ago||
This is such an amazing video. It collapses about three years of my casual research into housing down into just a few minutes. Thanks for sharing.
golem14 10 hours ago||
There is also a completely unreasonable shortage of water for a much bigger city.
wdr1 10 hours ago|||
I've lived on the westside of LA for ~20 years, so one secret I like to let people in on: there's no water shortage. There's a literal ocean of it. I can see it right out my window.

And all that it takes to turn seawater into potable freshwater is energy.

We don't have a water problem. We have an energy problem.

For all of LA County, it would take 500–750 MW each year to use seawater for all our freshwater needs.

Or put another, with a single nuclear power plant, we would solve all LA's freshwater needs -- forever.

thrance 10 hours ago|||
You don't have an energy problem, you have a political problem. Fresh water is wasted on thirsty plants destined for agriculture (like alfalfa), by rich farmers who inherited water rights put into law ages ago. It's very simple to solve water usage in California, it just requires a governor that has a tiny amount of grit and cuts into their water rights.

It's crazy how to some, building a whole nuclear reactor and dozens of desalination plants seems like a simpler solution than making a couple of very wealthy farmers a bit angry for a while. Capital really is all-powerful in the States, it even holds power in the very minds of its citizens.

jedberg 8 hours ago|||
It's not only energy though. Desalination takes space, and you have to do something with the salt. Last I saw, to have enough DeSal capacity for all of California, you'd have to replace every beach with DeSal plants to have enough capacity, and then you'd still have a salt problem.

You could put the salt on boats and dump it back much further out in the ocean, but that too takes energy.

epistasis 6 hours ago||||
Dense, newer housing needs a lot less water. If Los Angeles had densified rather than sprawling into the Inland Empire, etc. overall water usage would be far lower.

As it is, water usage in Los Angeles has had flat water usage for decades, even as its population grew by over a million people.

By downzoning so much, Los Angeles got the worst of all worlds: higher water usage, unaffordable housing, and unbelievably bad traffic because everybody has to drive such massive distances to the job centers.

Downzoning is an environmental disaster compared to the alternative, like allowing factories to dump their pollution into rivers type of disaster.

lokar 8 hours ago|||
CA has droughts, but not water shortages. Most of the water goes to highly inefficient and low value farming.
golem14 3 hours ago||
Sure, but without that farming, how would we get our almond milk lattes?
kristopolous 13 hours ago||
This is more like the construction date of buildings that have survived. Some early neighborhoods (like palms) have been completely replaced building by building so they really appear as dark here when they weren't. It had a downtown in the 1890s but all those buildings are gone. https://en.wikipedia.org/wiki/Palms,_Los_Angeles#/media/File...

it's basically this data: https://portal.assessor.lacounty.gov/ through this portal https://data.lacity.org/

rustywasm 12 hours ago||
Exactly this -- This is more like the construction date of buildings that have survived. Everything demolished, burned, or replaced is invisible.

Probably should put that front and center.

blululu 6 hours ago|||
Yes. The description is quite misleading. The fact that it is simply an overlay of the current map is also misleading. Looking at the west side, it completely skips the canals period of Venice. Marina Del Rey evolved considerably into its current form. Ballona creek was only dammed in the 30s. Etc.
3RTB297 5 hours ago||
Also noticeable as the first buildings show up - each one isolated and miles from anyone else? Generally not how human habitation clusters up, even if it was all farms to start.
kristopolous 4 hours ago||
this is the best resource I know of

https://mil.library.ucsb.edu/ap_indexes/FrameFinder/

It genuinely is much more sporadic then you think. 1 or 2 houses, then empty blocks with streets there, then 1 more, then some building ...

For a modern version, look up california city - modest suburban homes respectably maintained with cars in the driveway surrounded by endless nothing.

I have to presume there's some people that look at this and say "wow, this is perfect".

wathef 12 hours ago||
Los Angeles had the largest public transportation network in the United States until we paved over it[1]. We had over 1,300 miles! You could've gone from Huntington Beach to Downtown and all the way up to Burbank. You can see many of the maps of Los Angeles at the public library[2]. I don't live there anymore, love that place though.

[1] - https://www.pbssocal.org/shows/lost-la/from-rail-to-roads-an...

[2] - https://www.lapl.org/research-guides/maps/maps-los-angeles

rustywasm 12 hours ago||
My mom (who is 97) has a vivid memory of seeing FDR in 1935 -- the whole extended family took the the Red Car from Compton to downtown to see his motorcade. She remembered the electric trams worked really well, especially for folks without much money.
davidw 11 hours ago||
> worked really well, especially for folks without much money

That's probably part of the reason they got rid of them. You still see that argument used against transit: "it will bring _____ to our part of town".

khazhoux 10 hours ago||
The trams went away because of cars and buses, not because of racism.
cobbzilla 8 hours ago||
It can be both. Highways didn’t get built for poor folks, but did get built right through many of their neighborhoods.
WD-42 6 hours ago|||
Fun fact: this is the plot of the movie “Who Framed Roger Rabbit”
lokar 8 hours ago||
It’s making a comeback
ZeWaka 14 hours ago||
Bit misleading since it only shows properties still standing, seemingly. So the older periods look extremely empty.
sgt 13 hours ago||
This is one of those 'hey, I can vibe code this in a weekend' projects. Just look at how the AI decided to the entire map in dark mode, making it nearly impossible to tell the ocean and the land apart.
rustywasm 12 hours ago||
Yes, great point. What was torn down, burned, destroyed, etc. along the way isn't here. This is the surviving city, not the city as it was.
incanus77 9 hours ago||
As others have pointed out, this is more about the age of existing buildings than the construction of the city, but it's pretty neat.

About ten years ago when we were working on Mapbox GL, I did a mobile-native viz like this to show off the vector tile tech. The blog post is still up (thankfully) which has a good bit of info on the data processing pipeline as well, ranging from Shapefile to GeoJSON to vector tiles on the backend to Swift on the frontend:

https://medium.com/mapbox/visualizing-an-entire-citys-buildi...

I always loved mirroring a phone to a large TV and showing this off at 60FPS. It was such fun tech to work on.

neilv 13 hours ago||
A complementary view of one point in time is the LA Noire video game's attempt to recreate a (condensed and simplified) 1940s LA environment, with 3D architecture, cars, and ongoing expansion.

https://www.youtube.com/watch?v=OGPh2AcmG2A

The storytelling atmosphere is somber film-noire-ish, but there's simultaneously a feeling of national prosperity and potential for many (with notable unjust exceptions), like I think fewer people feel in more recent decades.

Would also be interesting to try to convey that kind of change over time, in an immersive way.

rustywasm 12 hours ago|
Did not think of that - yes that is a really interesting idea. Totally different way with interacting with data. I'm going to ponder that...
ericzawo 14 hours ago||
Having moved to LA this february, the sprawl is really something I had no true appreciation for until I moved here for real, and tried to run errands across town. It's a gigantic, beautiful, complicated place.
rustywasm 13 hours ago||
One the experiences for me that never gets old is coming in to LAX (flight path East to West) and the sprawl just goes on forever. The other crazy thing that 60% of the population speak a language other than English at home. So I think it has one of the best options for cuisine in the world, because it's all there (somewhere!)
lokar 8 hours ago|||
A family member lives near Pasadena. We asked if they wanted to go to a restaurant near Santa Monica. They sort of scoffed at the idea of going over to the west side unless it was really important.
WD-42 6 hours ago||||
I think a not insignificant amount of it is literally just pavement too. Absurdly wide roads and parking lots everywhere. It’s a bit of a hellscape really.
nunez 9 hours ago|||
All the way to almost San Diego, which is insane
asdff 14 hours ago|||
The density at least means you don't have to really run across town for much and can stay within a certain radius for most all your needs and wants. I mean look at the density of costcos alone. Many other metros might have 1 or 2 for the entire area. Then again a lot of other metros you basically can drive end to end in 25 miles.
oblio 12 hours ago||
I'm confused. LA doesn't strike me as dense. How dense can you get with huge areas of single family homes?
ianburrell 11 hours ago|||
LA is the densest major urban area in the country. The MSA isn't dense cause it includes all of Los Angeles County which is half desert and mountains. But the built up area beats Chicago and New York cause it has consistent, medium suburban density, 7400 people per sq mi. The others have dense city, New York City is 29,000 people per sq mi, but the far suburbs drop off.
asdff 11 hours ago|||
8200/sqmi on average. Even the single family home areas punch above their weight compared to the rest of the country because lots are mostly only 50ft wide and most all build-able land is put to some sort of use already.
mullingitover 11 hours ago||
It's a bunch of cats (mid-sized, and generally mid all-around, cities) fighting under a blanket. The history of the place is a reaction against New York, where the city is dense and had a bunch of super tall buildings. LA, as a region, said "well we don't want that and enacted a bunch of building codes to hamstring any single city in the region from potentially being a successful, mature urban center.

Pretty infuriating to visit Barcelona recently and see that there was a perfect example of good urban planning sitting right there for decades that LA could've simply copied. In the long run this region is simply incapable of maintaining its infrastructure with its tax base, even today you can see it starting to collapse.

tcdent 14 hours ago||
I did a project recently where I extracted every Los Angeles building permit record for a property and was able to look at the evolution of its infrastructure and tenancy over time by embedding the permit documents into an image-based embedding model. Could be an interesting way to incorporate more granularity of the history of properties over time, although it dramatically increases the scope of data processed.
computomatic 14 hours ago|
Interesting idea. Is there a practical way to obtain those permit records at scale?
tcdent 13 hours ago||
I had an LLM reverse engineer the API protocol of LADBS and extract the content I wanted. Wether that scales from one property to many (rate limits for one) I don't know, but I didn't encounter anything in the thousands I extracted.
djmips 14 hours ago|
I noticed most of the tall buildings are sixties to eighties. Some more info about that here. https://www.pbssocal.org/shows/artbound/a-brief-history-of-l...
rustywasm 12 hours ago||
Thank you! Great link!

And here is one that is just fun to watch because of Huell Howser --

Tallest Building | Visiting with Huell Howser https://www.youtube.com/watch?v=5ziEDhCPjOQ

tomjakubowski 11 hours ago||
Wikipedia has a nice visualization of the history of LA's tallest buildings.

https://en.wikipedia.org/wiki/List_of_tallest_buildings_in_L...

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