1255 48th Avenue, San Francisco
technical data · neighborhood and transit
Quick answers
- Does 1255 48th Avenue have open permits or code violations?
- San Francisco Department of Building Inspection lists 30 permits, 5 not closed, and 4 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 1255 48th Avenue at risk for?
- FEMA's National Risk Index rates the area relatively moderate overall, with elevated earthquake risk.
Permits and code violations
5 permits not closed out. Unfinished permits pass to the next owner. No open violations.
- Otc alterations permit Jan 2025Complete
Add new full bathroom at 2nd floor: lavy, shower, sink.
- Otc alterations permit Nov 2024Complete
Administrative permit to document legal use and occupancy of structure as a 2 story two unit building this documentation is based on a review of records including san born map assessors record and a dbi site visit. no work under this permit
- Otc alterations permit Nov 2024Complete
Administrative permit to document legal use and occupancy of structure as a 2 story two unit building this documentation is based on a review of records including san born map assessors record and a dbi site visit. no work under this permit
- Otc alterations permit May 2023Withdrawn
Revision to bpa# 202205234751: to correct address from 1267 48th ave to 1265 a 48th ave.
- Otc alterations permit Jan 2023Complete
Installation of a new sprinkler monitoring system. ref sprinkler 202205234751 and ref adu permit 202012241725
- Otc alterations permit Nov 2022Withdrawn
New fire sprinkler system in the adu unit and the garage per nfpa 13 incl underground 2" (22 feet) per nfpa 24. total 19 heads. ref pa# 202012241725.
- Otc alterations permit May 2022Complete
Install new fire sprinkler system throughout ground floor per nfpa 13 including new 2" dedicated fire service per nfpa 24 (total sprinklers=19) ref pa# 202012241725.
- Otc alterations permit Apr 2022Complete
Conversion of a portion of the (e) garage and into a 1 bedroom, full bathroom, and laundry room.
- Otc alterations permit Aug 2021Complete
Reroofing
- Additions alterations or repairs Dec 2020Complete
1st floor: add adu per ordinance 95-17. add 1 bedroom, kitchen, living, dining, and full bath.
- Otc alterations permit Nov 2020Complete
Rev to pa202010237253: remodel kitchen - remove partition wall between kitchen & hallway.
- Otc alterations permit Oct 2020Complete
Kitchen- (n) paint, flooring, countertop. 2 bathrooms- (n) flooring, paint, tiles. 3 bedrooms- (n) flooring, paint, remove carptet
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: Tosco/Unocal Station #0433, 1200 La Playa St. (350 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
2,550 ft
Key (Francis Scott) Elementary (2,550 ft), Noriega Children Center (3,600 ft), Sunset Elementary (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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1255 48th Avenue sits in San Francisco.
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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.
- 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.
- 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.
- Ask what heating system is in place (own boiler, wood, gas) and request the last winter month's bills.
- Check the condition of the fence, yard, and sidewalk out front: who is responsible for upkeep, and whether there are any boundary disputes with neighbors.
- 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.
Neighborhood recommendations are derived from public OpenStreetMap data and may be incomplete. Checking in person is still what matters most.