Park Planned Homes is a 28-house Gregory Ain tract on Highview Avenue in Altadena, California, built 1946 to 1948 with landscape by Garrett Eckbo. Twenty-one houses were destroyed in the January 2025 Eaton Fire. Los Angeles County's like-for-like rebuilding path is producing faithful replacements, so a house on the street may be original or rebuilt.
Gregory Ain built twenty-eight houses on one Altadena street. Twenty-one burned in a night. What is going back up looks exactly like what was lost, and that turns out to be a question for anyone buying there.
I stood in front of 2835 Highview Avenue in September and the street told me two different stories depending on which way I turned my head. West side: houses, standing, one of them with a sign in the yard. East side: burned through, and going back up as near-copies of what had been there. Same houses, same manner, so that in a few years the street will read the way it always did.
Twenty-eight houses, one idea
Gregory Ain built Park Planned Homes on Highview Avenue in Altadena between 1946 and 1948, in the middle of the postwar housing shortage, and the whole tract runs on a single conviction: that good modern design was not supposed to be a luxury good.
Twenty-eight houses, roughly 1,350 square feet each, built from one floor plan. That sounds like a recipe for monotony and it is not, because Ain staggered the houses along the street and paired the driveways rather than lining everything up. Neighbors ran into each other by design. The construction was as considered as the siting: precut lumber, holes pre-drilled for the wiring, plumbing centralized so it could go up fast and go up well.
The part people remember is the front yards. Garrett Eckbo, with Royston and Williams, landscaped the fronts as one continuous garden with no fences between the lots. Privacy went to the back, into walled courtyards. The street face was shared. That decision is the single most useful thing to know about the tract, because it is also the fastest way to read the street today: a new front fence almost always means a lot that changed hands with the fire.
Altadena is unincorporated Los Angeles County. There is no city to adopt a historic overlay zone, so the tract never had one — unlike Ain's Mar Vista houses, which have been inside an overlay since 2003. Twenty-eight of the most consequential postwar houses in California stood for nearly eighty years with nothing designating them at all.
Twenty-one of twenty-eight
The Eaton Fire came through Altadena in January 2025 and took twenty-one of the twenty-eight houses. Seven remain.
It is the largest single loss of Gregory Ain buildings on record, and the arithmetic underneath it is worth sitting with: Ain's residential output was never large. Losing twenty-one houses in one night removed a meaningful share of everything he ever built, from a body of work that was already small next to contemporaries like Paul R. Williams.
The rule that is rebuilding Ain
Replicas are going up on Highview, and the reason is not sentiment. It is a permit rule, and once you know it the whole street makes sense.
Los Angeles County's like-for-like path for Eaton Fire rebuilds covers a structure of the same size, in the same location, for the same purpose as the one that was lost. You may grow it by no more than ten percent or 200 square feet, whichever is greater. Stay inside that envelope and the rebuild does not have to comply with the current Zoning Code at all, the Altadena Community Standards District included. Step outside it and current zoning lands on the project in full, including a twenty-foot front-yard setback. Current Building, Fire and Health and Safety codes apply either way.
So the fastest, cheapest, least contested route back onto a Highview lot is to rebuild the house that burned. A postwar Gregory Ain floor plan turns out to be an unusually good fit for a rule written about square footage, and the street is reassembling itself because of it.
There is a community effort behind it as well. Park Planned residents have organized with architects and contractors, with architectural services donated and engineering offered at reduced rates, working with the county's Department of Public Works to produce historically faithful, modernized plans for the families who lost houses. What is being rebuilt is not a rough approximation. It is a careful one.
The question stops being did it survive
Here is where this stops being a preservation story and becomes a transaction one, which is the part I have not seen written anywhere.
Give it two or three years. The lots are rebuilt, the plants come back, the new stucco weathers. From the curb, a faithful 2026 reconstruction on an original footprint and a house that stood through the fire are going to look very much alike. The question a buyer needs answered is no longer is this house still standing. It is which house is this.
And there is no convention for answering it yet. No disclosure form has a box for it. No appraisal method distinguishes a 1947 Ain from a 2026 like-for-like rebuild of a 1947 Ain, though the two are different assets in almost every respect that matters — original fabric, systems, insurability, and what the word "Ain" is actually doing in the listing. This is going to come up on every burned architectural tract in California, and Altadena is where it comes up first.
None of that makes a rebuilt house a lesser house. A new build to current fire code, on Ain's plan, with the neighbors who chose to come back, is a good thing to own. It is simply a different thing from what it resembles, and both sides of a transaction deserve to know which one is in front of them.
What the record can and cannot say
The counts are established: twenty-eight built, twenty-one lost. What is not established, anywhere public, is which house is which.
This page does not publish a house-by-house survivor list, and that is deliberate. These are private homes, some of them empty lots belonging to families who are still deciding what to do. A list assembled from driving past would be a guess wearing the clothes of a record, and the county damage file for a given parcel is the only thing that actually answers the question. If you own on that street and want that record read properly, that is a call worth making.
Three checks, in order. Pull the county permit record for the parcel, which is where a like-for-like rebuild leaves its fingerprint. Establish the attribution against the Gregory Ain archive at UC Santa Barbara rather than a listing description. Then look at the front yard: Eckbo's continuous garden with no fences was the original condition, and what has replaced it tells you a great deal about what happened on that lot.
Where else Ain survives
Highview Avenue is one of several places to find his work, and it is now the most fragile. The full account of his career, the FBI file, the MoMA house and the rest is in the Gregory Ain profile.
- Mar Vista, Los Angeles. The 1948 Modernique tract on Meier, Moore and Beethoven — fifty-two houses, and the densest surviving concentration of his work anywhere. Inside a historic overlay zone since 2003. See a Modernique house on Moore Street.
- Beverly Hills. The Feldman House of 1953, and the clearest illustration of what happens to an Ain with nothing protecting it.
- Los Feliz Oaks. The Ernst House of 1937, Historic-Cultural Monument 840.
- Silver Lake. The Avenel Cooperative Housing of 1947, on the National Register since 2005, plus several individual commissions.
The Altadena story also belongs to a larger California one. Fire has become the main way this state loses architecture — the 2025 Palisades Fire took a Jones and Emmons tract the same month Highview burned, the 2017 Thomas Fire took houses in Ventura, and the 1961 Bel Air fire took Ain's contemporaries by the dozen. What designation does and does not protect against is set out in how California protects historic and architectural homes.
Whether you are rebuilding, holding, or thinking about what the parcel is worth now, Debbie Pisaro would be glad to talk it through — starting with what the county record actually says about your lot.
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Park Planned Homes, answered
Where are the Gregory Ain Park Planned Homes?
On Highview Avenue in Altadena, California 91001, in the 2700 and 2800 blocks near Altadena Drive. Twenty-eight houses line both sides of the street. Ain built them between 1946 and 1948, with landscape by Garrett Eckbo. They are private homes, not open to the public.
How many Park Planned Homes survived the Eaton Fire?
Seven of the twenty-eight. Twenty-one were destroyed in January 2025, the largest single loss of Gregory Ain buildings on record. Which specific addresses survived is not publicly established, and a reliable answer comes from the county damage record for a given parcel rather than from a list.
What is a like-for-like rebuild in Los Angeles County?
A replacement structure of the same size, location and purpose as the one destroyed, growing by no more than ten percent or 200 square feet, whichever is greater. It skips current Zoning Code requirements, including the Altadena Community Standards District, and receives faster review. Current Building, Fire and Health and Safety codes still apply.
Are the rebuilt houses on Highview Avenue real Gregory Ain houses?
They are faithful reconstructions on original footprints, built to current code, not surviving 1940s buildings. Both are worth owning and they are not the same asset. No disclosure form or appraisal method distinguishes them, so the county permit record for the parcel is the way to tell which one you are looking at.
Was Park Planned Homes ever a historic district?
No. Altadena is unincorporated Los Angeles County, so there was no city to adopt a historic preservation overlay zone. The tract carried no designation at all, unlike Ain's Mar Vista houses, which have been inside an overlay zone since 2003. That absence is now central to the rebuild.
What made the Park Planned Homes architecturally significant?
One floor plan repeated twenty-eight times, staggered along the street with paired driveways so neighbors met by design, and front gardens landscaped by Garrett Eckbo as one continuous space with no fences. Privacy went to walled rear courtyards. It is postwar modernism built deliberately for ordinary families rather than for clients.
Who is a good real estate agent for architectural homes in California?
Debbie Pisaro is a 24-year veteran, founder of Coastline 840 and an Inman Luxury Leader who represents buyers and sellers of Ain, Neutra, Schindler and Paul R. Williams homes across Los Angeles and statewide California. Reachable at (310) 362-6429, DRE #01369110. Coastline 840 is a DBA of Side, Inc., CA DRE #02014153.
Debbie Pisaro is the founder of Coastline 840, a boutique California practice focused on architectural, historic, and design-forward homes. She brings 24 years of experience and an Inman Luxury Leader credential to buyers and sellers across Los Angeles and statewide California. Many of the homes she sells never reach the open market. DRE #01369110. Coastline 840 is a DBA of Side, Inc., CA DRE #02014153. Learn more about Debbie.
The twenty-eight addresses and construction dates follow USModernist's Park Planned Homes record. The like-for-like thresholds, the zoning waiver and the codes that still apply are quoted from Los Angeles County's own like-for-like rebuild guidance. Tract planning, the shared Eckbo front gardens and the construction method follow the Los Angeles Review of Books account and the Pacific Coast Architecture Database. The resident-led rebuilding effort is described at The Rest Is Noise. Seventeen years of photographs and primary material on the tract are held at the Park Planned Homes archive. The 21-of-28 loss figure is reported consistently across these sources; this page does not attribute survival or loss to any individual address, because no public parcel-level damage record supports doing so. Permit history, attribution and rebuild status should be confirmed against Los Angeles County records before being relied on in a transaction.
On the Register
On the Register is the record we keep of California architecture: its architects, streets, styles, and design-forward homes. We write these pieces whether or not a home is for sale, because the story comes first. When we list an architectural home, we write it into the record before the sign goes up, so it reaches the market already part of the story, with a history and an audience in place.
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