Skip to content

Seismic retrofit in Twin Peaks

Twin Peaks is Central's mediterranean revival submarket. Twin Peaks wraps the city's namesake 922-ft summit pair — the 360° viewshed protections constrain second-story additions across the neighborhood.

Twin Peaks cost range
$585K$3.3M
typical mid-complexity
Permit authority
SFDBI + SF Planning §311
18-32 weeks (DBI + Planning)
Typical home size
1,800-4,500 sqft; hillside lots 0.06-0.15 acres
Borough · ZIP
Central
94114
Hillside slope >25% — DBI hillside reviewView-corridor protections (Twin Peaks summit + 360° SF views)SF §311 neighbor notificationMandatory Soft-Story on pre-1978 3+ unit

What a seismic retrofit project looks like here

Twin Peaks wraps the city's namesake 922-ft summit pair — the 360° viewshed protections constrain second-story additions across the neighborhood.

Because hillside slopes exceed 25% on most parcels, DBI hillside-construction review with geotech + retaining-wall structural is universal.

Premium views drive distinctive contemporary-replacement projects on aging MCM stock.

Mandatory Soft-Story Retrofit (Ord 66-13) on pre-1978 wood-frame 3+ unit, voluntary cripple-wall + chimney retrofit per CEBC Ch. A4 — Loma Prieta + 1906 fault legacy. In Twin Peaks specifically, mediterranean revival stock means seismic retrofit scope is shaped by the neighborhood's dominant construction typology. Baily's San Francisco scoping flow factors hillside slope >25% and view-corridor protections (twin peaks summit + 360° sf views) into the estimate before a contractor is involved.

Start your Twin Peaks scope — Baily asks the right questions.

Pre-seeded for seismic retrofit in Twin Peaks. Mention your 1,800-4,500 sqft, your timeline, and any known constraints — Baily factors the sfdbi + sf planning §311 review queue into the scope.

Loading chat…

Origin

Who is Baily?

Baily is named after Francis Baily — an English stockbroker who retired at 51, became an astronomer, and in 1836 described something on the edge of a solar eclipse that nobody had properly articulated before: a string of bright beads of sunlight breaking through the valleys along the moon’s rim.

He wasn’t the first to see them. Edmond Halley saw them in 1715 and barely noticed. Baily’s contribution was clarity — describing exactly what was happening, in plain language, so vividly that the whole field of astronomy paid attention. The phenomenon is still called Baily’s beads.

That’s what we wanted our AI to do. Every inbound call and text has signal in it — a homeowner’s real question, a timeline, a budget, a hesitation that means “yes but.” Baily listens to every one, 24/7, and finds the beads of light.

Baily was a businessman before he was a scientist. That’s our vibe too.

Questions LA homeowners actually ask

Nearest neighborhoods

Same service, adjacent San Francisco submarkets.

Other projects we scope in Twin Peaks

← Back to all San Francisco projects