1875 48th Avenue, San Francisco
technical data · neighborhood and transit
Quick answers
- Does 1875 48th Avenue have open permits or code violations?
- San Francisco Department of Building Inspection lists 49 permits, 21 not closed, and 2 violations.
- 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 1875 48th Avenue at risk for?
- FEMA's National Risk Index rates the area relatively high overall, with elevated earthquake risk.
Permits and code violations
21 permits not closed out. Unfinished permits pass to the next owner. No open violations.
- Otc alterations permit Apr 2026Issued
Soft demolition for dryrot repairs and damaged finishes and fixtures. all work is interior inside the home, ~80 lineal feet.
- Additions alterations or repairs Jan 2026Issued
Convert(e) rear portion of the lvl 1 into new adu (exclude garage). interior remodel at lvl 2 with interior stair relocation. new rear deck. new heat pump and tankless water heater. new lighting and electrical outlets per plan.
- Additions alterations or repairs Jan 2026Issued
Convert(e) rear portion of the lvl 1 into new adu (exclude garage). interior remodel at lvl 2 with interior stair relocation. new rear deck. new heat pump and tankless water heater. new lighting and electrical outlets per plan.
- Otc alterations permit Dec 2025Complete
Re-roofing: remove and replace roofing material / existing roofing material (in-kind)
- Otc alterations permit Oct 2025Issued
Enclose 120 sf below an e) floor above the rear of the bldg. new addition will included a full bath & study. e) wood stair at rear will be reconfigured. all windows & exterior doors will be replaced, all exterior siding will be replaced
- Otc alterations permit Jul 2022Complete
Structural revision to bpa#202206025339, voluntary upgrade ceiling joist by 2x12 lul @ front of house per plans, wall removal
- Otc alterations permit Jun 2022Complete
Revision to 202206015339. include 2nd kitchen with 2 burner stove only at ground floor; change 2nd floor kitchen layout per plan
- Otc alterations permit Jun 2022Complete
Add 1 bedroom, 1 bath at ground floor. remodel kitchen & bath at 2nd fl. same to same.
- Otc alterations permit Mar 2022Complete
Reroofing
- Otc alterations permit Jun 2019Issued
Street space
- Otc alterations permit Jun 2019Complete
Non structural kitchen remodel. replace cabinetry, countertops, add a hood
- Otc alterations permit May 2019Complete
Revision to pa#20190326614 add/replace 300 sq ft of siding 1x8 western red cedar pre-primed. not visible from street.
San Francisco Department of Building Inspection
Safety and environment
FEMA natural hazard risk
Relatively High
Highest for this area: earthquake. These drive insurance cost here.
FEMA National Risk Index, census tract
Nearest active fault
4.6 mi
Serra fault zone, slip rate unspecified. Ask about seismic retrofit and earthquake insurance.
USGS Quaternary Fault Database
Quakes M4.5+ since 1970
1 within 30 mi
Every recorded earthquake of magnitude 4.5 or stronger within 30 miles.
USGS earthquake catalog
Leaking fuel tanks
1 within 1,650 ft
Nearest: Tosco (Unocal) Station #3390, 3701 Noriega St. (1,300 ft), no further action. Every release here is closed by the state regulator.
EPA UST Finder, leaking underground storage tank releases
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
Nearest public schools
1,400 ft
Noriega Children Center (1,400 ft), Sunset Elementary (2,350 ft), Key (Francis Scott) Elementary (2,850 ft). Confirm the assigned school with the district.
U.S. Department of Education, NCES
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 48th 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.
- Schedule a viewing on a weekday too, between 6:00 and 7:30 PM, the window when the building is busiest: neighbors, parking, elevator.
- Knock on a neighboring door and ask two things: what bothers them most often, and what work is planned for the building.
- Look at the stairwell (cleanliness, smell) and the association's notice board: unpaid dues, conflicts, recent decisions.
- 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.
- 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.
Neighborhood recommendations are derived from public OpenStreetMap data and may be incomplete. Checking in person is still what matters most.
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