685 48th Avenue, San Francisco
technical data · neighborhood and transit
Quick answers
- Does 685 48th Avenue have open permits or code violations?
- San Francisco Department of Building Inspection lists 60 permits, 21 not closed, and 60 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 685 48th Avenue at risk for?
- FEMA's National Risk Index rates the area relatively moderate overall, with elevated earthquake risk.
Permits and code violations
21 permits not closed out. Unfinished permits pass to the next owner. No open violations.
- Otc alterations permit Sep 2026Issued
Unit 2: replace vanity & toilet, demo stall shower & re-tile w/ new pan, no plumbing or electrical in shower
- Otc alterations permit Jul 2026Issued
Re-roofing remove existing asphalt shingles and replace as per kind in area os 'x22'install new water proofing. no hot works. ref pa 202607155104
- Otc alterations permit Jul 2026Issued
Sheathing repair: repair damaged plywood, replace new 4x8x5/8 cdx as roof sheathing, install new waterproofimg 30# felt paper and install new asphalt shingles gutter, downspots. area is 22'x22'. no structual work. roofing pa 202607155107
- Otc alterations permit Apr 2026Issued
Shoring plan for (n) retaining wall. ref pa# 202604179633 & 202604179647.
- Otc alterations permit Apr 2026Issued
Shoring plan for (n) retaining wall. ref pa# 202604179633 & 202604179647.
- Otc alterations permit Apr 2026Issued
Remove (e) retaining wall replace with (w) retaining wall grading max 15 yards. share plans 202604179633
- Otc alterations permit Jan 2026Complete
Unit 201: revision to pa #202511048866. kitchen wall removal
- Otc alterations permit Dec 2025Complete
Unit #202: revision to pa #202511048873 to alter kitchen wall.
- Otc alterations permit Dec 2025Complete
Sow-replacement in kind 2/6 joist, measurement for balcony is 2'x6, wood handrail replacement for juliet balcony and stucco repairs and painting. replacement of 2 retrofit vinyl windows (1 in kitchen and 1 in bedroom) this work will be in compliance w/ nov# 20254409, item 7. visible from street.
- Otc alterations permit Nov 2025Complete
Kitchen remodel unit 202
- Otc alterations permit Nov 2025Complete
Unit 201: kitchen remodel
- Otc alterations permit May 2025Complete
Upgrade the existing fire alarm system by replacing it with 1 addressable fire alarm unit (1) wireless communicator next to facu (2) addressable smoke detector (2) addressable manual pull station (2) led horn strobe (1) outdoor horn strobe (1) ceiling led horn strobe (12) low frequency horn
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
6.2 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
3,700 ft
Lafayette Elementary (3,700 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.
- 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.
- Test water pressure and temperature at the tap, in the bathroom and kitchen, for at least a minute.
- 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.
- Check exactly where you'd park: a spot in the yard or garage, or street parking, and how crowded the street gets in the evening.
- Ask to see the construction documents (permit, sign-off) and check for visible cracks on the facade or in the attic/basement.
Neighborhood recommendations are derived from public OpenStreetMap data and may be incomplete. Checking in person is still what matters most.