One of the basic principles behind rent control policies is that you're trying to make housing more affordable for some, while at the same time more expensive for others. Economics is the study of choice, and this is a choice, whether it gets talked about or not. Previously, we spoke about a memo from Howard Marks where he describes the impact of rent control in New York City. In economic terms, that impact looks like this:
Some people who couldn't afford to live in New York City if rents were set by the free market get the opportunity to live in the city (their housing is more affordable)
Other people who would like to live in New York City and could afford higher rents can't because there are no available apartments (rent controls reduce housing supply)
And lastly, landlords with unregulated apartments can command higher rents than would be the case if new housing supply were not being discouraged (their housing is more expensive)
Today, let's talk about a recent research paper (June 2025) published in the Journal of Housing Economics called, "Rent control and the supply of affordable housing." What the authors discovered was the following:
Restrictive rent control reforms are associated with a 10% reduction in the total number of rental units available in a city
Restrictive rent control reforms led to an increase in the availability of units affordable to extremely low-income households
This was offset by a decline in the availability of units to other income groups, particularly those at slightly higher affordability thresholds
Once again, we see the economic trade-offs inherent in supply-side interventions like rent control. It's better for some and worse for others. However, governments tend to favor it because it's "free" to them; the costs are borne by landlords and renters at higher affordability thresholds. I'll let all of you comment on whether you think this is good or bad, but regardless, I think it's crucial that we acknowledge the trade-offs being made.
Cover photo by Benjamin Ashton on Unsplash

So, here's what's happening in the Pacific Palisades right now:
A pro-development organization has sued Gov. Gavin Newsom over an executive order blocking duplexes in Los Angeles neighborhoods stricken by January’s wildfires.
Newsom issued his order in July in response to lobbying from property owners in the Pacific Palisades, the coastal L.A. community that was largely destroyed in the blazes. Palisades residents argued that allowing duplexes and spitting [sic] lots into two parcels would undermine the neighborhood’s character and worsen evacuation efforts in the event of future disasters. Following the governor’s order, all the jurisdictions affected — the cities of Los Angeles, Malibu and Pasadena and L.A. County — banned SB 9 rebuilds in high-risk fire areas. The suit includes each local government as a defendant as well.
This is interesting.
On the one hand, there is, of course, a logic to not allowing too much density and too many close-together houses in an area prone to wildfires and where there are only so many roads leaving the community. But on the other hand, it's not clear that this is really what it's all about.
The counterargument, from groups like the one suing, is that this is actually about perpetuating exclusivity, and perhaps even about "cleansing" the neighborhood of households who don't have the means to rebuild in a way that suits the "character" of the place. Duplexes = rental homes. And smaller lots = less expensive houses.
So, which is it?
My view is that this should be looked at from an overall population standpoint, and not from a housing type standpoint. According to 2023 census data for zip code 90272, the Pacific Palisades had a population of approximately 21,438 residents. This is a decline of just over 10% over the last 23 years. (Source: U.S. Census Bureau Decennial Census 2000 & ACS 2023)
One of the basic principles behind rent control policies is that you're trying to make housing more affordable for some, while at the same time more expensive for others. Economics is the study of choice, and this is a choice, whether it gets talked about or not. Previously, we spoke about a memo from Howard Marks where he describes the impact of rent control in New York City. In economic terms, that impact looks like this:
Some people who couldn't afford to live in New York City if rents were set by the free market get the opportunity to live in the city (their housing is more affordable)
Other people who would like to live in New York City and could afford higher rents can't because there are no available apartments (rent controls reduce housing supply)
And lastly, landlords with unregulated apartments can command higher rents than would be the case if new housing supply were not being discouraged (their housing is more expensive)
Today, let's talk about a recent research paper (June 2025) published in the Journal of Housing Economics called, "Rent control and the supply of affordable housing." What the authors discovered was the following:
Restrictive rent control reforms are associated with a 10% reduction in the total number of rental units available in a city
Restrictive rent control reforms led to an increase in the availability of units affordable to extremely low-income households
This was offset by a decline in the availability of units to other income groups, particularly those at slightly higher affordability thresholds
Once again, we see the economic trade-offs inherent in supply-side interventions like rent control. It's better for some and worse for others. However, governments tend to favor it because it's "free" to them; the costs are borne by landlords and renters at higher affordability thresholds. I'll let all of you comment on whether you think this is good or bad, but regardless, I think it's crucial that we acknowledge the trade-offs being made.
Cover photo by Benjamin Ashton on Unsplash

So, here's what's happening in the Pacific Palisades right now:
A pro-development organization has sued Gov. Gavin Newsom over an executive order blocking duplexes in Los Angeles neighborhoods stricken by January’s wildfires.
Newsom issued his order in July in response to lobbying from property owners in the Pacific Palisades, the coastal L.A. community that was largely destroyed in the blazes. Palisades residents argued that allowing duplexes and spitting [sic] lots into two parcels would undermine the neighborhood’s character and worsen evacuation efforts in the event of future disasters. Following the governor’s order, all the jurisdictions affected — the cities of Los Angeles, Malibu and Pasadena and L.A. County — banned SB 9 rebuilds in high-risk fire areas. The suit includes each local government as a defendant as well.
This is interesting.
On the one hand, there is, of course, a logic to not allowing too much density and too many close-together houses in an area prone to wildfires and where there are only so many roads leaving the community. But on the other hand, it's not clear that this is really what it's all about.
The counterargument, from groups like the one suing, is that this is actually about perpetuating exclusivity, and perhaps even about "cleansing" the neighborhood of households who don't have the means to rebuild in a way that suits the "character" of the place. Duplexes = rental homes. And smaller lots = less expensive houses.
So, which is it?
My view is that this should be looked at from an overall population standpoint, and not from a housing type standpoint. According to 2023 census data for zip code 90272, the Pacific Palisades had a population of approximately 21,438 residents. This is a decline of just over 10% over the last 23 years. (Source: U.S. Census Bureau Decennial Census 2000 & ACS 2023)
The site itself is only 59.49 m2 (~640 ft2), and the building footprint is 47.97 m2 (~516 sf), for a total of 388.28 m2 (~4,179 ft2). There's retail on the first and second floors, one home per floor on levels 3 through 8, and then a two-storey home on levels 9 and 10. All of this is serviced by a single elevator, and a single open-air egress stair off the back.

The building itself uses a simple structural system involving 6 columns (which you can see evenly placed on the plans). According to the architect's notes, they started with a simple 4-column design, but apparently the columns were too large and compromised the suite layouts.

Tokyo is a unique city and this kind of housing wouldn't work everywhere. But there's a universal lesson here: removing barriers and allowing small infill projects is a good thing for cities. Until these projects are feasible, we won't know exactly what the market actually wants and could support.
Photos from Hiroyuki Ito Architects
On top of this, the number of households has also declined from ~9,319 in 2000 to 8,282 in 2023. So by all accounts, the area is shrinking and becoming less dense. There are fewer residents and fewer occupied homes. This is a directionally good thing if your primary concern is evacuation congestion and the safety of residents.
But then, what's the concern with duplexes and smaller lots? Is the concern that the area might regain its previous population and household count? Is the objective to continue shrinking and reach some more optimal set of numbers? Should there only be 15,000 residents, or maybe even 10,000?
Because if that's the case, then I think a more effective policy would be: "This neighborhood can only support X number of residents and Y number of households, because otherwise people can't evacuate quickly enough in the case of emergency. Once we reach these limits, we will stop processing building permits for all housing types."
When a policy only restricts specific housing types, as opposed to more directly addressing a stated problem, it suggests to me that the stated problem is not actually the primary concern.
Cover photo by Beau Horyza on Unsplash
The site itself is only 59.49 m2 (~640 ft2), and the building footprint is 47.97 m2 (~516 sf), for a total of 388.28 m2 (~4,179 ft2). There's retail on the first and second floors, one home per floor on levels 3 through 8, and then a two-storey home on levels 9 and 10. All of this is serviced by a single elevator, and a single open-air egress stair off the back.

The building itself uses a simple structural system involving 6 columns (which you can see evenly placed on the plans). According to the architect's notes, they started with a simple 4-column design, but apparently the columns were too large and compromised the suite layouts.

Tokyo is a unique city and this kind of housing wouldn't work everywhere. But there's a universal lesson here: removing barriers and allowing small infill projects is a good thing for cities. Until these projects are feasible, we won't know exactly what the market actually wants and could support.
Photos from Hiroyuki Ito Architects
On top of this, the number of households has also declined from ~9,319 in 2000 to 8,282 in 2023. So by all accounts, the area is shrinking and becoming less dense. There are fewer residents and fewer occupied homes. This is a directionally good thing if your primary concern is evacuation congestion and the safety of residents.
But then, what's the concern with duplexes and smaller lots? Is the concern that the area might regain its previous population and household count? Is the objective to continue shrinking and reach some more optimal set of numbers? Should there only be 15,000 residents, or maybe even 10,000?
Because if that's the case, then I think a more effective policy would be: "This neighborhood can only support X number of residents and Y number of households, because otherwise people can't evacuate quickly enough in the case of emergency. Once we reach these limits, we will stop processing building permits for all housing types."
When a policy only restricts specific housing types, as opposed to more directly addressing a stated problem, it suggests to me that the stated problem is not actually the primary concern.
Cover photo by Beau Horyza on Unsplash
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