646 47th Avenue, San Francisco
technical data · neighborhood and transit
Quick answers
- Does 646 47th Avenue have open permits or code violations?
- San Francisco Department of Building Inspection lists 17 permits, 3 not closed, and 0 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 646 47th Avenue at risk for?
- FEMA's National Risk Index rates the area relatively moderate overall, with elevated earthquake risk.
Permits and code violations
3 permits not closed out. Unfinished permits pass to the next owner.
- Otc alterations permit Aug 2025Complete
Repairs to main level and lower level due to water damage. patch drywall on both levels. replace tile in bathroom on main level. replace walk in shower in lower level, reinstall 3 toilets, 2 vanity sinks. replace countertops in kitchen, re-install sink and appliances. no change in layout. see permit
- Otc alterations permit Oct 2018Complete
Revision to (e) 201809119672 add new bathroom to (e) walk in closet
- Otc alterations permit Sep 2018Complete
Kitchen and bathroom remodel including electrical and plumbing. replace cavinets and countertops in kitchen, replace tile in bathroom. kitchen: 12' x 8'. bathroom: 5' x 7'.
- Otc alterations permit Apr 2017Complete
Revision to 201703312963 to add plans: standard plan a 2008 residential seismic strengthening plan voluntary structural strengthening per sfbc ab 108 cebc appendix a3
- Otc alterations permit Mar 2017Complete
Voluntary prescriptive seismic strengthening in crawl space. addd new anchor bolts foundation plates sheathing per cbc appendix chpater a3
- Otc alterations permit Nov 2012Complete
Replace windows in existing openings, replace slider at ground level rear. total 6 windows replaced at rear. u max less than or equal to 0.40. cec 151c. to abate complaint #201273583
- Otc alterations permit Nov 2009Complete
Reroofing
- Otc alterations permit Apr 2009Issued
Replace old kitchen cabinets with new. new counters & sink / faucet.
- Otc alterations permit Jun 2004Issued
Replace new garage door from wood to alum w/windows and doors set back 3 ft frm front of bldng
- Otc alterations permit Oct 2000Complete
Re roofing
- Otc alterations permit Jun 2000Complete
Replace 1 window & siding to sides of house only
- Otc alterations permit Feb 1997Complete
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 (1,600 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
3,150 ft
Lafayette Elementary (3,150 ft), Washington (George) High (4,850 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
More on 47th Avenue
All addressesViewing recommendations
What's worth checking in person before deciding.
- 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.
- 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.
- Test water pressure and temperature at the tap, in the bathroom and kitchen, for at least a minute.
- 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.
- Knock on a neighboring gate and ask about noise, pets, flooding, or other issues common in the area.
- Check the sewer connection (public network or septic tank) and the water source (public network or well), including pressure and water quality.
- Schedule a viewing in the evening too, on a weekday, to see street traffic, streetlights, and how quiet the neighborhood is after 8 PM.
Neighborhood recommendations are derived from public OpenStreetMap data and may be incomplete. Checking in person is still what matters most.