618 48th Avenue, San Francisco
technical data · neighborhood and transit
Quick answers
- Does 618 48th Avenue have open permits or code violations?
- San Francisco Department of Building Inspection lists 25 permits, 6 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 618 48th Avenue at risk for?
- FEMA's National Risk Index rates the area relatively moderate overall, with elevated earthquake risk.
Permits and code violations
6 permits not closed out. Unfinished permits pass to the next owner.
- Otc alterations permit Dec 2025Complete
Bathroom remodel (master 99sf & 2nd fl bath 88sf). replace plumbing fixtures, upgrade electrical, replace drywall of master bedroom due to flood.
- Otc alterations permit Apr 2014Complete
Install hardi vinyl siding over both side & back wall, install 4 windows and door to back wall. no structural changes.
- Otc alterations permit Jan 2014Complete
Install hardi siding cover to the front of house only no structural change
- Otc alterations permit Apr 2008Issued
Street space & sidewalk permit only.
- Otc alterations permit Jan 2001Complete
Alterations: conversion of an (e) bedroom to bathroom, inclcuding laundry space
- Otc alterations permit Jun 2000Complete
Renewal of application 9712066
- Otc alterations permit Jun 2000Complete
Renewal of application 9705848
- Otc alterations permit Jun 1997Expired
Remodeling of kitchen and bthrms
- Otc alterations permit Jun 1997Complete
Reroofing
- Additions alterations or repairs May 1997Complete
Horizontal addition
- Additions alterations or repairs Apr 1997Expired
Submit drawings to comply w/ "nov #9700170 by insp fang
- Otc alterations permit Jan 1997Complete
Repair dryrot in balcony framing, sister existing joists
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
6.3 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
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.
- This is a house, not an apartment. Check the lot boundaries, car access, and how water drains from the yard after rain, including whether the neighboring lot sits higher and could send water toward the property.
- Semi-detached or row house: the shared wall matters. Listen from the room adjoining the neighbor's side and ask whether any structural work has been done there.
- Ask to see the construction documents (permit, sign-off) and check for visible cracks on the facade or in the attic/basement.
- Check the roof, gutters, and downspouts for signs of leaks or recent repairs, especially if it has rained recently.
- Schedule a viewing in the evening too, on a weekday, to see street traffic, streetlights, and how quiet the neighborhood is after 8 PM.
- Ask what heating system is in place (own boiler, wood, gas) and request the last winter month's bills.
Neighborhood recommendations are derived from public OpenStreetMap data and may be incomplete. Checking in person is still what matters most.