48 Kempton Avenue, San Francisco
technical data · neighborhood and transit
Quick answers
- Does 48 Kempton Avenue have open permits or code violations?
- San Francisco Department of Building Inspection lists 26 permits, 5 not closed, and 3 violations, 2 open.
- 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 48 Kempton Avenue at risk for?
- FEMA's National Risk Index rates the area relatively low overall, with elevated earthquake risk.
Permits and code violations
5 permits not closed out. Unfinished permits pass to the next owner. 2 open violations.
- Otc alterations permit Jan 2025Complete
Re-roofing: remove and replace roofing material / existing roofing material (in-kind)
- Otc alterations permit Jun 2022Issued
Remove and replace ducting. no change to hvac.
- Otc alterations permit Feb 2022Complete
Kitchen remodel like for like same location. upgrade subpanel, add dedicated lines w/ arc fault gfci breakers for appliances, counter top, run new under cab lights, water line for fridge, new line for pot filler.
- Otc alterations permit Feb 2021Complete
Reroofing
- Otc alterations permit Feb 2021Complete
Reroofing
- Otc alterations permit Feb 2018Issued
Kitchen remodel, same location, 4 led lights, new subpanel box
- Otc alterations permit May 2016Complete
Add bathroom at garage (lower) level, legalize bedroom
- Otc alterations permit Apr 2016Complete
Kitchen remodel, in kind. comply cec140(k)
- Otc alterations permit Sep 2008Complete
Reroofing
- Otc alterations permit Dec 2007Complete
Install 2 vinyl windows in kind into existing frames. no change in size or location. windows do face the street. if appicable, bedroom windows will comply with section 310.4 for rescue. all windows will be double pane and have a u-factor of.30.
- Otc alterations permit Mar 2007Complete
Bathroom remodel -tile fixtures, electrical-plumbing paint.
- Otc alterations permit Dec 2006Complete
Remove and replace old cabinets, countertop. install new cabinets and counter top. new sink as well. (e) light fixtures to remain. no structural work.
San Francisco Department of Building Inspection
Safety and environment
FEMA natural hazard risk
Relatively Low
Highest for this area: earthquake. These drive insurance cost here.
FEMA National Risk Index, census tract
Leaking fuel tanks
2 within 1,650 ft
Nearest: San Francisco Golf Course, 1300 Junipero Serra Blvd (1,150 ft), no further action. Every release here is closed by the state regulator.
EPA UST Finder, leaking underground storage tank releases
Brownfield site
1,200 ft
Habitat For Humanity De Long Street Properties Habitat For Humanity Parcel 8 and 2 more within half a mile. Former industrial land in EPA's cleanup and reuse program.
EPA ACRES Brownfields
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
1,800 ft
Ortega (Jose) Elementary (1,800 ft), Sheridan Elementary (2,800 ft), Woodrow Wilson Elementary (3,000 ft). Confirm the assigned school with the district.
U.S. Department of Education, NCES
Major airport
8.2 mi
San Francisco International (SFO). Aircraft may be audible under approach paths.
FAA large-hub airports
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 Kempton 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.
- 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 what heating system is in place (own boiler, wood, gas) and request the last winter month's bills.
- Knock on a neighboring gate and ask about noise, pets, flooding, or other issues common in the area.
- Ask to see the construction documents (permit, sign-off) and check for visible cracks on the facade or in the attic/basement.
- 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.
Neighborhood recommendations are derived from public OpenStreetMap data and may be incomplete. Checking in person is still what matters most.