1646 48th Avenue, San Francisco
technical data · neighborhood and transit
Quick answers
- Does 1646 48th Avenue have open permits or code violations?
- San Francisco Department of Building Inspection lists 38 permits, 13 not closed, and 38 violations, 15 open.
- 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 1646 48th Avenue at risk for?
- FEMA's National Risk Index rates the area relatively high overall, with elevated earthquake risk.
Permits and code violations
13 permits not closed out. Unfinished permits pass to the next owner. 15 open violations.
- Otc alterations permit Jun 2024Complete
Reroofing
- Otc alterations permit Feb 2023Issued
Legalizing existing gate, driveway, parking pad. new curbcut, pour/finish concrete as necessary.
- Otc alterations permit Nov 2021Complete
To comply with nov 202183921. installation of siding at west evevation, new windows (2) at front facade and repair of stairs (front steps in kind)
- Otc alterations permit Aug 2021Cancelled
Reroofing
- Otc alterations permit Oct 2020Complete
R/r (e) windows at each, north and south sides of bldg. no change to front facade. install new alum-clad. install 3 new skylights in between roof joists. relocate (e) door at rear deck.
- Otc alterations permit Sep 2020Complete
Reroofing. remove old roof and install new app john's mansville granulated material.
- Otc alterations permit Sep 2020Complete
Replace siding and windows in kind. rear of building. not visible from street.
- Otc alterations permit Aug 2020Complete
Foundation repair and replacement in-kind.
- Otc alterations permit Jul 2020Complete
Remodel kitchen & bath in kind. 2nd floor
- Otc alterations permit Aug 2019Issued
Street space
- Otc alterations permit May 2019Complete
Replacement of three front facade windows to be aluminum clad wood, fixed and casement. replacement of garage and street doors within existing opening. garage door to be solid, not glass.
- Otc alterations permit Dec 2018Complete
Comply with nov 201811981. new concrete to the existing footing on the north side
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
Leaking fuel tanks
1 within 1,650 ft
Nearest: Tosco (Unocal) Station #3390, 3701 Noriega St. (1,500 ft), no further action. Every release here is closed by the state regulator.
EPA UST Finder, leaking underground storage tank releases
Historic listing nearby
400 ft
Moss Flats Building. Exterior changes can need preservation review; listed buildings can qualify for rehabilitation tax credits.
National Park Service, National Register
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
1,300 ft
Noriega Children Center (1,300 ft), Key (Francis Scott) Elementary (1,750 ft), Sunset Elementary (2,950 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.
- Knock on a neighboring door and ask two things: what bothers them most often, and what work is planned for the building.
- Schedule a viewing on a weekday too, between 6:00 and 7:30 PM, the window when the building is busiest: neighbors, parking, elevator.
- 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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