522 48th Avenue, San Francisco
technical data · neighborhood and transit
Quick answers
- Does 522 48th Avenue have open permits or code violations?
- San Francisco Department of Building Inspection lists 30 permits, 16 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 522 48th Avenue at risk for?
- FEMA's National Risk Index rates the area relatively moderate overall, with elevated earthquake risk.
Permits and code violations
16 permits not closed out. Unfinished permits pass to the next owner.
- Otc alterations permit Mar 2026Complete
In-kind remodeling of 1 bathroom(s) in basement with 1 shower pan(s).
- Otc alterations permit Aug 2025Complete
Full bathroom remodel with new shower, atrium remodel, demo floor and roofing membrane under new water proofing, tile floor, patch stucco on walls. all work is interior, non street facing.
- Otc alterations permit Aug 2023Issued
Re-roofing: remove and replace roofing material / existing roofing material (in-kind)
- Otc alterations permit Oct 2018Issued
Street space
- Otc alterations permit Jun 2018Complete
In-kind repair of dry rot damage in front balcony/deck. install (2) air vents by front door and (1) air vent above garage
- Otc alterations permit Dec 2017Issued
Reroofing.
- Otc alterations permit Aug 2014Complete
Replace piers and increase value from 15,000.00 to 30,000.00 per permit app#201407111021
- Otc alterations permit Jul 2014Complete
Remove all dry rotted materiakl and replace with new.
- Otc alterations permit Aug 2012Issued
Street space
- Otc alterations permit Sep 2011Complete
Existing kitchen remodel with same layout. upgrade all electrical works. kitchen on upper level, no change to wall layout and openings. (a minimum of 50& total rated wattage of permanently installed lighting shall be high efficiency, install carbon monoxide alarm & smoke detector per cebc 420.907
- Otc alterations permit Feb 2009Complete
To finalize work approved under pa#200612200205. all work is complete. sp. insp. complete 01/29/09
- Otc alterations permit May 2008Issued
Street space permit
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
6.4 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: Commercial, 101 Point Lobos Ave (1,450 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
3,550 ft
Lafayette Elementary (3,550 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.
- 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.
- 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 specifically where you'd park: is there paid city parking, who currently holds it, what the permit costs, and how long the waitlist is.
- 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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