490 48th Avenue, San Francisco
technical data · neighborhood and transit
Quick answers
- Does 490 48th Avenue have open permits or code violations?
- San Francisco Department of Building Inspection lists 15 permits, 4 not closed, and 3 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 490 48th Avenue at risk for?
- FEMA's National Risk Index rates the area relatively moderate overall, with elevated earthquake risk.
Permits and code violations
4 permits not closed out. Unfinished permits pass to the next owner. No open violations.
- Otc alterations permit Oct 2024Complete
Remove terrazzo front stairs, demo 24" trenches of stucco at same place. install new plywood ramps on (e) framing, waterproof. apply stucco patches. prep, prim and finish paint.
- Otc alterations permit Mar 2023Issued
Remove (e) windows and replace with 7 new fiberglass windows and 1 new sliding glass door. (4) wood frame windows visible to the street and (3) not visible to the street. same size and same location.
- Otc alterations permit Mar 2021Complete
Revision to pa# 202011239555. upon further inspection, no structural work was needed for basement plan.
- Otc alterations permit Nov 2020Issued
Remodel kitchen with non-structural & structural wall removals. r/r appliances to new location; r/r range in same location, new exhaust vent. electrical panel upgrades and add 2 ded ckts, new lighting plan, add/replace plugs/switches.
- Otc alterations permit Oct 2020Complete
Reroofing
- Otc alterations permit Feb 2009Complete
Voluntary, non engineered sub structural improvement. installation of anchor bolts, holddowns, plywood bracing and beam and column connectors. all work done inside of building in garage/basement
- Otc alterations permit Jul 2006Complete
Reroofing
- Otc alterations permit Apr 2005Expired
Revision to pa# 2005/04/13/9976 to fix orientation of the rear deck & stair.
- Otc alterations permit Apr 2005Expired
Horizontal addition- property rear deck
- Otc alterations permit Feb 2003Complete
5 windows to be replaced size for size visible from street. alumminum to vinyl
- Otc alterations permit Jun 2001Complete
Reroofing
- Otc alterations permit Dec 1989Complete
Reroofing
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: Commercial, 101 Point Lobos Ave (1,400 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
3,600 ft
Lafayette Elementary (3,600 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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490 48th Avenue is 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.
- Test water pressure and temperature at the tap, in the bathroom and kitchen, for at least a minute.
- Look at the stairwell (cleanliness, smell) and the association's notice board: unpaid dues, conflicts, recent decisions.
- Ask specifically where you'd park: is there paid city parking, who currently holds it, what the permit costs, and how long the waitlist is.
- Schedule a viewing on a weekday too, between 6:00 and 7:30 PM, the window when the building is busiest: neighbors, parking, elevator.
- Knock on a neighboring door and ask two things: what bothers them most often, and what work is planned for the building.
- Ask for the latest maintenance bill from a winter month, not a summer one: that's where the real cost of living there shows up.
Neighborhood recommendations are derived from public OpenStreetMap data and may be incomplete. Checking in person is still what matters most.
The year built, height regime, structure, and elevator for this address are being indexed right now, city by city. Save the page and check back: it fills in over time. If you live here, you can fill it in yourself in a minute by leaving a review.