Fernando Nelson & Sons was the San Francisco building firm behind two west-side tracts that San Francisco Planning's records date to 1916: Parkway Terrace, beside Golden Gate Park, and West Portal Park, on land west of Twin Peaks. The same records place Fernando Nelson among the owners and developers of land west of Twin Peaks who helped get the Twin Peaks streetcar tunnel built, and they credit his firm with tracts in many new neighborhoods across the city.
We worked mainly from three SF Planning documents. The first is the adopted Sunset District Residential Builders, 1925–1950 context statement, whose cover carries the date April 3, 2013. The second is the department's draft residence parks context statement, Gardens in the City: San Francisco Residence Parks, 1906–1940 (October 2016, revised March 2026), which has not been adopted. The third is the department's 2012 case report for the Duboce Park Landmark District. The tracts these records date are from 1916, and the houses they describe are in Period Revival styles. None of them calls the firm's work mid-century modern.
From the Victorian city to the west side
Nelson's earlier work belongs to the Victorian city: SF Planning's Duboce Park report credits him with at least 43 of the 87 buildings in that landmark district, one of his earliest developments. In 2026 the Board of Supervisors passed an ordinance designating his own 1897 house at Castro and 20th Streets, the Fernando Nelson Home, a city landmark, and that ordinance says he built more than 4,000 houses during his 70-plus years of homebuilding in San Francisco.
This guide stays with what came after: the firm's tracts on the west side of the city from 1916 on.
The tunnel and the land west of Twin Peaks
The Duboce report says Nelson sited his developments close to newly expanded cable car and streetcar lines. On the west side, the transit that mattered was the Twin Peaks Tunnel. The Sunset statement says the tunnel, completed in 1918, linked the largely vacant sand dunes of the southern Sunset with the city center. Its east portal sat at Market and Castro Streets and its west portal at West Portal Avenue and 14th Avenue. The statement says it spurred growth around the west portal, though slowly.
The residence parks draft adds Nelson's part in getting the tunnel built. It lists him as a director of the Twin Peaks Property Owners Association, a group of owners and developers of land west of Twin Peaks that described itself as responsible for creating the tunnel. A. S. Baldwin of Baldwin & Howell was its president, and Duncan McDuffie of St. Francis Wood was another director. According to the draft:
excavation began on November 12, 1914, at Market and Castro Streets and at the western portal, the spot that became Ulloa Street and West Portal Avenue;
the city planned and built the tunnel, but property owners on either side of it bore the whole cost;
the first Muni cars ran through it on February 3, 1918.
Parkway Terrace, 1916
The Sunset statement says Parkway Terrace "was laid out by prolific Victorian-era builder Fernando Nelson & Sons in 1916." The tract sits next to Golden Gate Park, between 27th and 32nd Avenues and from Lincoln Way to Irving Street. SF Planning counts it among the smaller neighborhoods within the larger Sunset District.
Two things set the tract apart in SF Planning's account:
Corner benches. Rounded, built-in concrete benches stand at the intersections. The statement says that, apart from Parkway Terrace, the Sunset District has none of the planned landscape design elements found in the neighborhoods around it.
Bigger lots and houses. It describes many large, detached houses designed in fully expressed Period Revival styles, set on oversize lots with deep front yard setbacks. Across most Sunset blocks and tracts of the 1920s to 1950, the statement says, front setbacks ran about 10 feet.
The statement isn't consistent on size. One passage calls Parkway Terrace a five-block tract, and another calls it an eight-block 1910s development. It gives no house count. The residence parks draft lists "Parkway Terrace, Fernando Nelson & Sons, 1916, Lincoln Way," with the note "Entry benches, partial development," among early developments that were marketed as residence parks or had some of their features.
West Portal Park and the later tracts
The residence parks draft lists "West Portal Park, Fernando Nelson & Sons, 1916" in that same group, with no boundaries or other details. It explains where the land came from. In 1912 Baldwin & Howell formed a land syndicate, the Residential Development Company, which bought part of Sutro's Rancho San Miguel and sold portions to developers who created residence parks and other tracts. West Portal Park is one of the tracts it names.
For the firm's other tracts, the Duboce report gives names rather than details. It says Nelson's firm developed tracts in many new neighborhoods throughout the city, including the Inner Richmond, Sunset Terrace, Parkwood Heights, West Portal Park, Merced Manor, Mt. Davidson Manor, Twin Peaks and Silver Terrace. The records we read give no boundaries or house counts for those tracts.
Three of the names need care:
Mt. Davidson Manor and Merced Manor. The residence parks draft places both among 1920s and 1930s developments that claimed, or were thought to offer, residence park features to some extent, and it says further research is needed on how far they did.
Merced Manor's other builders. The Sunset statement notes that Merced Manor has alleys with attached garages fronting them, and it lists Merced Manor among the areas where Ray Galli's firm built. A Merced Manor house isn't necessarily a Nelson house.
Sunset Terrace. The Sunset statement uses "Sunset Terraces" for an area where Henry Doelger built larger, often detached houses. The name alone doesn't identify a builder.
The Lang Realty connection
Both SF Planning documents trace a line from Nelson's firm to Lang Realty, another west-side developer. The Sunset statement says several of the Langs had worked as managers and salesmen at major building firms, including F. Nelson and Sons and Oscar Heyman and Brothers. It adds that Lang Realty was part of the development team that designed, built and marketed Balboa Terrace in the 1920s. Lang Realty is one of the builders the statement treats as a master builder when it judges tracts. Nelson's firm is not on that list.
How SF Planning's survey treats these houses
The Sunset statement's builder profiles cover later firms, among them the Rousseau brothers and Chris McKeon's Happy Homes, which have their own histories here. Its table of Sunset builders doesn't include Fernando Nelson & Sons. By our count, the survey's two lists of individually eligible buildings, 46 Period Revival and 38 Streamline Moderne, credit no building to the firm.
The phrase "fully expressed" still matters to a Parkway Terrace owner. The survey's Period Revival list describes each of its buildings as a significant example of "a fully expressed Period Revival style," and says these may include Storybook, French Provincial, Tudor, Mediterranean and Spanish Colonial Revival influences. For Spanish Colonial Revival, the statement looks for complexity of design, expressive massing and articulated façades, and says restrained versions with flush façades, simple plans and minimal ornament would not qualify as architecturally significant. It uses the same "fully expressed" phrase for Parkway Terrace's houses, but the records we read don't rate any of them.
SF Planning's survey FAQ answers two questions owners ask. Being rated in a survey doesn't make a building a landmark; designation is a separate process with owner notice and public hearings. And for the state-required environmental review, owners of buildings outside a survey area are usually responsible for providing the historic background on their building. The state-level side is covered in our guide Is My House Historic in California?
One name trap: the Sunset statement's builder table lists a "Nelson, Frank F.," active from 1937, and its Spanish Colonial Revival section pictures a 1937 house credited to "F.F. Nelson." The records we read don't connect him to Fernando Nelson & Sons, so a record that says only "Nelson" proves little.
Checking a Nelson house before you buy or remodel
Start with the map. SF Planning bounds Parkway Terrace at 27th to 32nd Avenues, Lincoln Way to Irving Street. The records give no boundaries for West Portal Park or the later tracts, so an address there settles nothing by itself.
Find the firm's name in the records. Look for Fernando Nelson & Sons or F. Nelson and Sons on the house's first building permit and in the assessor's file, not just "Nelson."
Date the house on its own. The records date the tract layouts, not the houses on them, and the residence parks draft calls Parkway Terrace a partial development.
Ask SF Planning how the parcel is classified before any exterior work, and be ready to supply the house's background if it sits outside a surveyed area.
For mid-century houses elsewhere in the city, start with San Francisco mid-century homes.
FAQ
Is any of the firm's work mid-century modern?
The records we read show none. The firm's west-side tracts that SF Planning dates are from 1916, and the Parkway Terrace houses it describes are in Period Revival styles.
Where is Parkway Terrace?
In the Sunset District next to Golden Gate Park, between 27th and 32nd Avenues from Lincoln Way to Irving Street, according to SF Planning's Sunset statement.
Is a Parkway Terrace house a landmark?
None of the records we read describes Parkway Terrace as a landmark district or rates its houses. Ask SF Planning about a specific parcel's status before you plan exterior work.
Were racial restrictions written into Parkway Terrace deeds?
SF Planning's Sunset statement says Sunset District builders "typically did not adopt racially restrictive deeds until the late 1930s," and a footnote names "Fernando Nelson's Parkway Terrace tract developed in the 1910s" as "one notable exception." The statement doesn't quote a Parkway Terrace deed, so read your own title documents; our post on modifying restrictive covenants in California explains how owners strike that language.
Related reading
Oliver and Arthur Rousseau: Builders of the Sunset's Boulevard Tract
Chris McKeon's Happy Homes: A Sunset District Builder History
More guides on this topic: Mid-Century Modern Architects & Builders
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Researching a Fernando Nelson & Sons house in Parkway Terrace or West Portal? Call or text the Boyenga Team at Compass at (408) 373-1660 or (650) 383-8606, or contact the Boyenga Team to go over what the records show.
