858 48th Avenue, San Francisco
technical data · neighborhood and transit
Quick answers
- Does 858 48th Avenue have open permits or code violations?
- San Francisco Department of Building Inspection lists 21 permits, 11 not closed, and 0 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 858 48th Avenue at risk for?
- FEMA's National Risk Index rates the area relatively moderate overall, with elevated earthquake risk.
Permits and code violations
11 permits not closed out. Unfinished permits pass to the next owner.
- Otc alterations permit Aug 2022Complete
Legalize second unit. 1) construct 2 bedrooms, one full bathrm, media rm & remodel one extg kitchen, bathrm at ground fl. 2) remodel extg kchn, bathrm, construct 1 nw full bathrm, study rm & replace (e) sheet rock with new at 2/f. 3) construct new deck with staircase at rear of house.
- Otc alterations permit Jun 2017Issued
Street space
- Otc alterations permit Feb 2014Complete
Ground floor: revision to permit # 201307172090, reconfigurate walls and relocate interior door.
- Otc alterations permit Jul 2013Complete
Remove kitchen ground floor and remodel extg bath.remove drywall and insulate. replace windows.new kitchen cabinets on 2nd floor. create two new storage rooms on 1st floor.new front gate.
- Otc alterations permit Jul 2013Complete
Remodel kitchen and bathroom
- Otc alterations permit Jan 2011Complete
Remodeling of sfd; install (n) gas fireplace, remodel (e) kitchen & bath on 2nd. flr. add a (n) bedroom on 1st. flr. legalize & remodel (e) bath on 1st. flr. replace (e) furnace & w/h on 1st.flr. remove (e) plastic cover @ lightwell.
- Otc alterations permit Aug 2009Issued
Reroofing
- Otc alterations permit Apr 2002Expired
Sidewalk
- New construction wood frame Jan 2002Cancelled
Erect anew3-story 2 dwelling res. bldng
- Otc alterations permit Jul 2001Expired
Sidewalk repair
- Otc alterations permit Sep 1998Complete
Repair stucco about 120 sq.ft. front door side level
- Demolitions Mar 1998Filing
Demolish a two story single family dwelling
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
Nearest active fault
6.0 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
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
3,850 ft
Lafayette Elementary (3,850 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.
- 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.
- Look at the stairwell (cleanliness, smell) and the association's notice board: unpaid dues, conflicts, recent decisions.
- 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.
- Schedule a viewing on a weekday too, between 6:00 and 7:30 PM, the window when the building is busiest: neighbors, parking, elevator.
Neighborhood recommendations are derived from public OpenStreetMap data and may be incomplete. Checking in person is still what matters most.