636;638 48th Avenue, San Francisco
technical data · neighborhood and transit
Quick answers
- Does 636;638 48th Avenue have open permits or code violations?
- San Francisco Department of Building Inspection lists 25 permits, 7 not closed, and 6 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 636;638 48th Avenue at risk for?
- FEMA's National Risk Index rates the area relatively moderate overall, with elevated earthquake risk.
Permits and code violations
7 permits not closed out. Unfinished permits pass to the next owner. No open violations.
- Otc alterations permit May 2023Complete
Like for like fire alarm installaion with notification to comply with 1103.7.6.1.
- Otc alterations permit Mar 2022Complete
Kitchen and bathroom remodel with new electric and plumbing. no walls to be removed.
- Otc alterations permit Dec 2021Complete
Reroofing
- Otc alterations permit Apr 2021Complete
Kitchen and bathroom remodel with new electric and plumbing. no walls to be removed.
- Otc alterations permit Feb 2017Complete
Comply with nov # 201758642. replace existing garage door new doors comply with nov 201758642. no rough opening changes. provide 200 sq. in. at garage door for ventilation purpose.
- Otc alterations permit Feb 2017Complete
Comply with nov # 201758642. replace existing garage door new doors comply with nov 201758642. no rough opening changes. provide 200 sq. in. at garage door for ventilation purpose.
- Otc alterations permit Mar 2014Issued
Finish and install new windows in exisiting openings 5 fiberglass windows to be street facing. 7 vinyl windows are rear facing. u-factor not more than .32
- Otc alterations permit Mar 2014Issued
Finish and install new windows in exisiting openings 5 fiberglass windows to be street facing. 7 vinyl windows are rear facing. u-factor not more than .32
- Otc alterations permit Oct 2011Complete
Voluntary strengthen of first story only ocnsisting of new plywood sheathing over exisitng stud walls & new steel moment frames at front of bldg.
- Additions alterations or repairs Aug 2011Cancelled
Dbi ab-094 voluntary soft story seismic retrofit, project consists of installing two moment frames, foundation, plywood shear walls. all work will be done on the ground floor.
- Otc alterations permit Jul 2010Complete
Install 1/2" cdx plywood panel over existing studs walls, one 4' one 13' insdie apt#4 on 3/f
- Otc alterations permit Apr 2008Issued
Street space & sidewalk permit only.
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
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
Have you lived here? Share your experience.
Leave a reviewThe Address Story
Every address has a context. Read its story.
How much it costs to live here
Price, rent, mortgage, and the city's economic context, all in one place.
The money at this address
Renting, buying, and investing, on the same numbers. Enter the listing price to see all calculations.
Enter a rent and the yield calculation fills in on its own.
Loan calculator for this address
Enter the listing price. The calculation uses only your numbers.
Rough estimate, with a fixed rate. The bank's offer may include fees and insurance.
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
Viewing 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.
- 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.
- 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.
- 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 the sewer connection (public network or septic tank) and the water source (public network or well), including pressure and water quality.
Neighborhood recommendations are derived from public OpenStreetMap data and may be incomplete. Checking in person is still what matters most.