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Isn't homes becoming more affordable an intended side effect of this legislation?



Yes, but you want a system that can dial in a level of affordability rather than a "rapidly multiply every home in an area by four" race to the bottom.

I don't know the specifics of the bill, but if it's a 2.5x investment cheat code for the fastest actors, it's going to cause mayhem and hard backlash.


> if it's a 2.5x investment cheat code for the fastest actors

It isn't a 2.5x investment cheat code. You're spending $1M for the original home. You're spending $500k on the construction of each new home. That's $2.5M invested. They would need to sell each house for more than $1.5M each for a "2.5x investment cheat code". If the original house cost $1M, how are they going to sell 4 houses with less land at a higher asking price? Even if they somehow managed that, do you honestly think sellers in the area aren't going to catch on?


If by "rapidly" you mean "over several decades". That's the scale at which neighborhoods turn over.


By "rapidly" I mean on the span of a few years. If your neighbor subdivides their lot, the smartest thing for you to do is subdivide yours (after all, it will turn your $1M into $2.5M, no?). It will have a domino effect because the last house in the neighborhood full of subdivisions will have the lowest sale value (and the first house to subdivide will be the most valuable).

The intent is good but the system needs a moderating factor to prevent runaway.


> If your neighbor subdivides their lot, the smartest thing for you to do is subdivide yours

What if you like your lot, and don't want a lot 1/4th the size? I think this likely applies to most homeowners.

> the last house in the neighborhood full of subdivisions will have the lowest sale value (and the first house to subdivide will be the most valuable).

I don't think this is likely. As more homes subdivide, the relative value of non-subdivided homes will go up due to scarcity.

> needs a moderating factor to prevent runaway

Why? I can think of very very few cases in the US where we've had a problem with "too many homes", and many many cases where the opposite trend prevails. I think it's unlikely that we'll see any sort of runaway.


> By "rapidly" I mean on the span of a few years. If your neighbor subdivides their lot, the smartest thing for you to do is subdivide yours

If you are an absentee landlord, sure.

If you are a homeowner, then, you probably already chose your living arrangement over living in a smaller apartment while being the landlord of several other smaller units, and the reasons you choose that probably still apply.

And because there are people who prefer larger single family homes, as the supply of those drops, the value of the existing ones goes up (not as much as the value of subdivided lots, but the increase in value is—unlike that on a lot that you subdivide and improve—mostly-untaxed because Prop 13 full-value assessment is triggered by change of ownership or nee construction, not market appreciation driven by supply.)

So, as a homeowner, the smart thing to do—absent a change in living situation that changes why you became a homeowner—the smart thing to do when some neighbors convert is to enjoy the tax-free value boost, take advantage of the increase value-to-loan ratio to refi at more favorable terms if you have a mortgage, or take money out for other projects, etc., or... whatever.


If the capacity existed to build residential properties at that scale (much less at a price that wasn't absurd), there wouldn't be a need for this bill.


Why do we want to prevent runaway? You're worried that houses will be too affordable?


Yes. Homeowners of different political stripes are united in their unabashed desire to prevent the building of housing in order to maximize their own home's value. Rather than an outright attack on their fellow citizens, which it is, this is always phrased as protecting the value of their investment as if the outsized growth if the real estate sector was something their family earned rather than the result of piss poor policy.


>It will have a domino effect because the last house in the neighborhood full of subdivisions will have the lowest sale value (and the first house to subdivide will be the most valuable).

I'm not sure there is any logic in believing that. Since even a 4x increase in housing wouldn't provide enough to meet demand, if everyone else subdivided and you didn't yours would be worth more not less. The only way your fears would happen is if they allowed apartment complexes on the new lots and density increased by 10-50x.


> after all, it will turn your $1M into $2.5M, no?

Um, no. The graphic intends to show money spent by all parties on housing. The original party pays $1M and receives $300k for the plots of land. The subplot parties then spend $500k to build houses. There is nothing magically turning a $1M home into multiple homes without additional capital.


Exactly. This probably makes the land somewhat more valuable, but nothing close to 2.5x.


Just to be clear, your concern here is the destruction of wealth for middle and lower class homeowners?


> If your neighbor subdivides their lot, the smartest thing for you to do is subdivide yours (after all, it will turn your $1M into $2.5M, no?)

No, it doesn't. Subdividing and building more houses on it turns it into $2.5M.

Most people will not have the cash or financing available to do that. And many people who want to do this will likely spend years doing it. And many people, even seeing their neighbors do it, just won't want to. They perhaps like the size of their lot, or don't have any family or friends that they really want to live that close to.

> last house in the neighborhood full of subdivisions will have the lowest sale value (and the first house to subdivide will be the most valuable).

If true, so what? As long as its sale value is more than it cost to build, that's fine.

> By "rapidly" I mean on the span of a few years.

That just isn't going to happen. GP's estimate of several decades is much more likely.

> the system needs a moderating factor to prevent runaway.

I don't think there's really any risk of that happening. At any rate, the problem is that we don't have enough housing; increasing the number of houses, and making them more affordable, is the entire point here.


Most US cities are literally decades behind on the home supply. x4 isn't a race to the bottom, it's barely getting started.


The constraint you're looking for is construction labour availability. You can't get millions of houses overnight.




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