558 48th Avenue, San Francisco
technical data · neighborhood and transit
Quick answers
- Does 558 48th Avenue have open permits or code violations?
- San Francisco Department of Building Inspection lists 36 permits, 15 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 558 48th Avenue at risk for?
- FEMA's National Risk Index rates the area relatively moderate overall, with elevated earthquake risk.
Permits and code violations
15 permits not closed out. Unfinished permits pass to the next owner. No open violations.
- Otc alterations permit Jan 2026Complete
Replace 6 existing windows with new aluminum wood clad windows, non street facing. no change in size and location. u factor 0.29. back of bldg.
- Otc alterations permit Apr 2021Complete
Replacing 3 windows, in kind retrofit fashion. street visible (1) street facing (2). existing: wood, proposed: aluminum clad wood, u-factor <.30. windows to be replaced in existing openings. windows will be recreated with true divided or fully simulated divided lites to match google 2019
- Otc alterations permit Feb 2018Issued
Street space
- Otc alterations permit Jan 2015Complete
Remodeling kitchen,& 3 bathroom remodeling on 2nd & 3rd floor. replace all windows & sliding doors.
- Otc alterations permit Feb 2014Complete
Repair front deck leaking less than 50%. replace decking material in kind.
- Otc alterations permit Dec 2011Issued
Reroofing
- Otc alterations permit Mar 2010Complete
Replace the siding on the rear wall of house.
- Otc alterations permit Oct 2008Issued
Underpinning for work on adjacent property (570 48th ave-pa#2008/0219/5026)
- Otc alterations permit Mar 2008Complete
Reroofing
- Additions alterations or repairs Feb 2008Complete
Rear extension on both levels, kitchen alterations, bath alteration and new half bath
- Otc alterations permit Aug 2006Complete
Reroofing
- Otc alterations permit Feb 2006Issued
Repair dry-rot siding (rear right) approx. 30 sq.ft., replace in kind.
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
Leaking fuel tanks
1 within 1,650 ft
Nearest: Commercial, 101 Point Lobos Ave (1,550 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
Wildfire risk
Very Low
Wildfire risk is low enough that standard home insurance usually covers it.
FEMA National Risk Index
Nearest public schools
3,500 ft
Lafayette Elementary (3,500 ft), Washington (George) High (5,200 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.
- 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.
- 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.
Neighborhood recommendations are derived from public OpenStreetMap data and may be incomplete. Checking in person is still what matters most.
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