280 Peninsula Avenue, San Francisco
technical data · neighborhood and transit
Quick answers
- Does 280 Peninsula Avenue have open permits or code violations?
- San Francisco Department of Building Inspection lists 15 permits, 8 not closed, and 1 violation.
- What is the 2026 conforming loan limit in San Francisco County?
- $1,249,125 for a single-unit home, per FHFA. Larger loans are jumbo loans.
- Is radon a problem here?
- EPA radon zone 2, moderate potential.
- What natural disasters is 280 Peninsula Avenue at risk for?
- FEMA's National Risk Index rates the area relatively moderate overall, with elevated earthquake risk.
Permits and code violations
8 permits not closed out. Unfinished permits pass to the next owner. No open violations.
- Otc alterations permit Nov 2023Complete
To comply with bid-insp nov #202305706 dated 8/10/2023, close illegal window 36"x36" & vent on north side of building.
- Otc alterations permit Jul 2018Issued
Street space
- Otc alterations permit Jun 2007Complete
Add two bedroom, one study room, one full bath room and one storage on existing ground floor. also legalize existing full bath room on ground floor.
- Otc alterations permit Oct 2003Expired
Reroofing
- Otc alterations permit Sep 2002Expired
Reroofing
- Otc alterations permit Aug 2002Expired
For final inspection only
- Otc alterations permit Sep 2001Expired
Renew app #9924463s
- Otc alterations permit Sep 2001Complete
Reroofing
- Additions alterations or repairs Apr 2000Complete
Proposed horinzontal & vertical addition
- Otc alterations permit Jul 1995Expired
Reroofing
- Additions alterations or repairs Dec 1991Cancelled
A 2 story rear extension
- Otc alterations permit May 1991Expired
Reroofing
San Francisco Department of Building Inspection
Safety and environment
FEMA natural hazard risk
Relatively Moderate
Highest for this area: earthquake. These drive insurance cost here.
FEMA National Risk Index, census tract
Superfund site
1.9 mi
Hunters Point Naval Shipyard (NPL Site). Check groundwater and vapor reports on the EPA site page.
EPA National Priorities List
Leaking fuel tanks
8 within 1,650 ft
Nearest: Bayshore Gas And Service, 2260 Bayshore Bl (1,150 ft), no further action. Every release here is closed by the state regulator.
EPA UST Finder, leaking underground storage tank releases
Brownfield site
900 ft
Blanken Ave Parking Lot Former Schlage Lock Facto. Former industrial land in EPA's cleanup and reuse program.
EPA ACRES Brownfields
Toxic release facility
1,350 ft
Schlage Lock Co and 2 more within a mile. Reports chemical releases to air, water or land to EPA each year.
EPA Toxics Release Inventory
High-voltage line
650 ft
115 kV line run by PACIFIC GAS & ELECTRIC COMPANY.
HIFLD transmission lines
Radon potential
Moderate
Average indoor levels of 2 to 4 pCi/L. EPA still suggests testing ground-floor and basement units.
EPA and USGS Geologic Radon Potential Map
Wildfire risk
Very Low
Wildfire risk is low enough that standard home insurance usually covers it.
FEMA National Risk Index
Nearest public schools
2,850 ft
KIPP Bayview Academy (2,850 ft), Visitacion Valley Elementary (3,200 ft), El Dorado Elementary (3,400 ft). Confirm the assigned school with the district.
U.S. Department of Education, NCES
Major airport
6.5 mi
San Francisco International (SFO). Aircraft may be audible under approach paths.
FAA large-hub airports
Conforming loan limit 2026
$1,249,125
San Francisco County. Mortgages up to this amount qualify for Fannie Mae and Freddie Mac pricing. Above it, the loan is a jumbo with stricter terms.
FHFA Conforming Loan Limit Values, one-unit
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Who lives and works in San Francisco
Venture capital, AI labs and the highest founder density in the country
San Francisco runs on company building. Engineering and product salaries set the price floor, offices cluster in SoMa and the Mission, and demand moves with funding cycles rather than with the school calendar.
- $141,446
- median household income
- 19.6%
- residents aged 25 to 34
- 38%
- households that own their home
What pays the bills
- Software and AI
- Venture capital
- Biotech
- Professional services
- Tourism
Who anchors the economy
OpenAI · Salesforce · Stripe · UCSF · Y Combinator
The market is shaped around
- Founders and engineers
- Early career tech workers
- People who move for a company
More on Peninsula Avenue
All addressesViewing recommendations
What's worth checking in person before deciding.
- Test water pressure and temperature at the tap, in the bathroom and kitchen, for at least a minute.
- Look at the stairwell (cleanliness, smell) and the association's notice board: unpaid dues, conflicts, recent decisions.
- Schedule a viewing on a weekday too, between 6:00 and 7:30 PM, the window when the building is busiest: neighbors, parking, elevator.
- Ask specifically where you'd park: is there paid city parking, who currently holds it, what the permit costs, and how long the waitlist is.
- Ask for the latest maintenance bill from a winter month, not a summer one: that's where the real cost of living there shows up.
- Knock on a neighboring door and ask two things: what bothers them most often, and what work is planned for the building.
Neighborhood recommendations are derived from public OpenStreetMap data and may be incomplete. Checking in person is still what matters most.
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