645 Huron Avenue, San Francisco
technical data · neighborhood and transit
Quick answers
- Does 645 Huron Avenue have open permits or code violations?
- San Francisco Department of Building Inspection lists 22 permits, 6 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 645 Huron Avenue at risk for?
- FEMA's National Risk Index rates the area relatively low overall.
Permits and code violations
6 permits not closed out. Unfinished permits pass to the next owner. No open violations.
- Otc alterations permit Aug 2025Complete
Re-roofing at flat roof w/ torch down. no work to (e) front sloped tile roof. no work to (e) roof structural sheathing
- Otc alterations permit Jul 2024Complete
Reroofing
- Otc alterations permit Jul 2024Complete
Reroof
- Otc alterations permit Aug 2022Complete
Install new deck on posts less 10' above grade within buildale rear yard. no fire wall on side property line, replace rear 2nd fl windows with sliding glass door
- Otc alterations permit Jun 2017Complete
To comply w/ nov#201782943. replace (e) front stairway. less than 50% of stairway to be replaced.
- Otc alterations permit Feb 2014Complete
Revision to appl #2013.12.17.4366 (to comply with nov #201328901) to include the legalizion of bathroom @ garage level.
- Otc alterations permit Dec 2013Complete
To comply with mov# 201328901remove illegal unit from garage area. remove kitchen, bathroom, bedroom & family room. cap all utilities at source.
- Otc alterations permit Feb 2011Complete
Interior remodel on 2nd floor. create 1 master bathroom
- Otc alterations permit Feb 2011Complete
Remodel existing kitchen and bathroom
- Otc alterations permit Jul 2009Complete
To comply w/ nov#200907121, remove unpermitted (2) units on ground floor; rebuild space w/ new (1) bedroom, (2) baths, family, storage & laundry.
- Otc alterations permit Nov 2002Issued
Sidewalk repair
- Otc alterations permit Oct 2002Issued
Sidewalk permit
San Francisco Department of Building Inspection
Safety and environment
FEMA natural hazard risk
Relatively Low
No single natural hazard ranks high for this area.
FEMA National Risk Index, census tract
Nearest active fault
3.6 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
Leaking fuel tanks
5 within 1,650 ft
Nearest: Union Espanola De California, 2850 Alemany Blvd. (800 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
Nearest public schools
900 ft
Longfellow Elementary (900 ft), George Washington Elementary (2,050 ft), Sheridan Elementary (3,250 ft). Confirm the assigned school with the district.
U.S. Department of Education, NCES
Major airport
7.6 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
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
More on Huron 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.
- Knock on a neighboring door and ask two things: what bothers them most often, and what work is planned for the building.
- 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.
- 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.