451 Allison Street, San Francisco
Estimated number, map position is approximatetechnical data · neighborhood and transit
Quick answers
- Does 451 Allison Street have open permits or code violations?
- San Francisco Department of Building Inspection lists 12 permits, 4 not closed, and 1 violation.
- 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 451 Allison Street at risk for?
- FEMA's National Risk Index rates the area relatively low 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 Feb 2023Complete
Changing wood siding into a fiber cement front area of the house. from verticle to horizontal siding.
- Otc alterations permit Jan 2015Complete
Reroofing
- Otc alterations permit Sep 2010Issued
Reroofing
- Otc alterations permit May 2010Issued
Street space permit & sidewalk
- Otc alterations permit May 2003Complete
Reroofing
- Otc alterations permit Oct 2001Expired
Install 7 replacement windows (windows at front)
- Otc alterations permit Oct 2001Complete
See attached termite report#011087
- Otc alterations permit Mar 2001Complete
Install 4 vinyl windows in kind,into existing frames,no change in size or location.no structural cha
- Additions alterations or repairs Jan 1994Complete
New drway @ famrm-grnd flr--strg room (out from fam rm)
- Otc alterations permit Sep 1990Expired
Reroofing
- Additions alterations or repairs Mar 1989Complete
Revision #4, retaining walls height increased #8813435
- Additions alterations or repairs Sep 1988Complete
Horizontal addition
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
Nearest active fault
3.7 mi
San Andreas fault zone, slip rate greater than 5.0 mm/yr. Ask about seismic retrofit and earthquake insurance.
USGS Quaternary Fault Database
Quakes M4.5+ since 1970
2 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
Nearest public schools
1,100 ft
Panorama Elementary (1,100 ft), Guadalupe Elementary (1,750 ft), George Washington Elementary (1,850 ft). Confirm the assigned school with the district.
U.S. Department of Education, NCES
Major airport
7.2 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 Allison Street
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.
- Knock on a neighboring door and ask two things: what bothers them most often, and what work is planned for the building.
- Schedule a viewing on a weekday too, between 6:00 and 7:30 PM, the window when the building is busiest: neighbors, parking, elevator.
- 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.
- 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.
Neighborhood recommendations are derived from public OpenStreetMap data and may be incomplete. Checking in person is still what matters most.
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