Jack Hillmer kept a San Francisco office from the mid-1940s, first in partnership with Warren Callister and then, a draft SF Planning biography says, under his own name, yet the records credit him with no house in the city at all. His built work sits in Marin County, Napa, Belvedere Island, Palo Alto and Inverness, and there is not much of it. This guide sets out his offices, the projects San Francisco Planning lists, how its records place his wood-crafted modern work, and the checks to make before crediting a house to him.
Nearly all of the record comes from a pair of SF Planning documents. One is the city's historic context statement, San Francisco Modern Architecture and Landscape Design 1935–1970; its Historic Preservation Commission case number is 2011.0059U. It gives Hillmer a short appendix entry and mentions him in a handful of chapters. The other is an architect biography marked DRAFT that copies the entry almost word for word and changes a few details. Where the two disagree, both versions are given below.
Offices and dates
The entries list two offices. The firm name printed on a drawing set is a quick way to date it:
Hillmer & Callister, from 1946 through 1949. The draft biography adds "Architects, San Francisco."
Jack Hillmer, Architect, his own office. The statement gives no place or years for it; the draft biography puts it in San Francisco and calls the years "unknown."
One small conflict sits inside his own entry. Its narrative says he moved to the Bay Area in 1945 and opened an office with Callister, which reads as a 1945 start, while its firm list starts the partnership in 1946. Callister's entry also says 1946. Our Warren Callister guide tells the partnership from the other side and follows Callister's later firms.
SF Planning labels Hillmer a "master architect" in the statement and an "Architect of Merit" in the draft biography. Neither label designates a building.
A small body of work
The entry is direct about scale. In SF Planning's words, "only eight of his designs were ever completed." It adds that all of his residential designs are in Northern California and that none of them is in San Francisco.
His single known project in the city, per the same entry, is the 1947 interior design of his own Bush Street office. That makes him an unusual figure in a study of San Francisco buildings: he appears because of where he practiced and exhibited, not because of houses on the city's streets.
The projects the records list
Both documents print a list of projects outside the city. Each one carries a client's name, which this guide leaves off; place and year will do to begin a search:
A house in Marin County, 1947
A house in Napa, 1950
A house on Belvedere Island, 1951
An addition to a house in Palo Alto, 1959
A house in Kentfield, 1959
A house in Inverness, 1962
That is six entries, one of them an addition, against the eight completed designs the narrative mentions. The records don't name the other two, so any further attribution needs its own paper trail.
The statement prints drawings of the 1951 Belvedere Island house with a caption saying they ran in a newspaper in December 1985 and naming UC Berkeley's Environmental Design Archives as the source. Those archives are a lead worth following for anyone researching one of his projects.
Callister's own project list has an undated Marin County design shared with Hillmer. Neither entry says whether it is the 1947 Marin County house on Hillmer's list, so keep the two listings separate until a permit or drawing ties them together.
How SF Planning describes his work
The entry calls him "a prominent figure of the Bay Area Modern era, best known for his inventive yet elegantly simple work using unfinished wood." Those are SF Planning's words, not ours. Its Callister entry adds a contrast: Callister's later office grew better known for large housing and apartment work, while the statement describes Hillmer as continuing to build "eccentric and charming residences."
Twice the statement lists him among key architects it links in style to the Second Bay Tradition, alongside Roger Lee, John Funk, Henry Hill, Callister and others. Pioneers of that style in the city include Gardner Dailey, whose guide shows how the style reached San Francisco streets.
The statement's character-defining features for the Second Bay Tradition give an owner a checklist. Among them:
wood cladding, often stained, though painted wood also appears;
roofs that are flat, gently pitched or canted, with deep eaves showing exposed rafter tails;
post-and-beam construction;
broad glass walls or ribbon windows;
open or flexible plans, with an emphasis on indoor-outdoor living;
a horizontal emphasis, with the back yard used as an extension of the indoor rooms.
That list describes the style as a whole, not Hillmer in particular. The one feature the records tie to him by name is unfinished wood. Our advice, not a record line: in a house linked to him, look first at the original wood surfaces, whether they survive and whether later paint or sealers have covered them.
Telesis and the 1949 show
Two other threads in the statement connect him to the wider Bay Area modern scene.
Telesis. The Callister entry says the partners' office later became headquarters for Telesis, a 1940s group that brought together planners, designers, architects and landscape architects. A footnote in the statement's section on Telesis also lists Hillmer among those who took part in, or were linked to, the group.
The 1949 show. In the statement's table of San Francisco Museum of Art entries for its 1949 show, one entry appears under "Jack Hillmer and Warren Callister," located in Marin County, with the landscape credited to Hillmer & Callister. It gives no street or year, so it does not by itself identify a house.
For how the statement treats Telesis and the 1949 show across the city's modern era, see our guide to SF Planning's context statement.
Is my house a Jack Hillmer?
With so few completed designs on record, any new attribution deserves care. Before his name goes on a sale listing, a valuation note or a permit application, go through these steps:
Start from the six listed places. If the house isn't in Marin County, Napa, Belvedere Island, Palo Alto, Kentfield or Inverness, or its year doesn't match, the records don't support the claim on their own.
Fit the year to an office. Drawings from 1946 through 1949 should carry the Hillmer & Callister name. After that, look for his own name. The records give no end date for his office.
Treat a San Francisco house as unproven. SF Planning says none of his houses is in the city. A claim for one needs a permit or signed drawings, not a resemblance.
Request the original permit and whatever plans the city or county holds. The architect's name and the build year should line up. Our house-dating field guide explains which features and records help pin down a build year.
Check the archive lead. The statement credits drawings of one of his houses to that Berkeley archive, so an archive search by place and year may turn up drawings.
Look closely at the wood. Note which surfaces are original, which were refinished and which were painted later, before any work starts.
Owning a house linked to Hillmer
Neither SF Planning label lists a house on a register or protects it. All of his listed houses are outside San Francisco, so the local planning department and any county or state survey records are the place to ask whether a property is already rated historic.
Is My House Historic in California? compares the state's registers and explains how review works. Before you plan exterior changes, ask the local planning office what applies to the parcel, and get legal advice where it matters; nothing here replaces it. Mid-century houses in the city itself appear on our San Francisco page.
Frequently asked questions
Did Jack Hillmer design any houses in San Francisco?
Not according to SF Planning. Its entry says none of his residential designs is in the city and gives his own office interior on Bush Street, from 1947, as his only known San Francisco project.
How many Hillmer houses were built?
The entry says eight of his designs were completed. Its project list names six, one of them an addition in Palo Alto, all in Northern California.
What does Hillmer have to do with Warren Callister?
The two ran Hillmer & Callister from 1946 to 1949 (his entry's narrative ties the office to his 1945 move). Afterward Callister started his own Tiburon practice, and Hillmer practiced under his own name.
Related reading
Warren Callister: Bay Area Architect of Sculptural, Vaulted Roofs
Gardner Dailey: San Francisco Architect of Bay Region Modern Houses
San Francisco's Modern Architecture Context Statement for Owners
More guides on this topic: Mid-Century Modern Architects & Builders
Want email updates on Eichler homes? Sign up for Eichler Alerts.
Researching a Jack Hillmer house? Call or text the Boyenga Team at Compass at (408) 373-1660 or (650) 383-8606, or contact the Boyenga Team to talk through the house and its history.
