818;820 47th Avenue, San Francisco
technical data · neighborhood and transit
Quick answers
- Does 818;820 47th Avenue have open permits or code violations?
- San Francisco Department of Building Inspection lists 39 permits, 9 not closed, and 8 violations, 1 open.
- 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 818;820 47th Avenue at risk for?
- FEMA's National Risk Index rates the area relatively moderate overall, with elevated earthquake risk.
Permits and code violations
9 permits not closed out. Unfinished permits pass to the next owner. 1 open violation.
- Otc alterations permit Jun 2026Issued
Comply with nov202656052. replace garage door and do framing repairs due to damage caused by car into building.
- Additions alterations or repairs Nov 2025Complete
To comply with nov# 202295346. change of use from residential r-3 & grocery store retail m to residential r-3 only.
- Otc alterations permit Aug 2025Complete
At lightwell fire escape derust/replace in kind 3 rusted bolts at guard rails and ladder. install a single missing deck plank at 2nd fl fire escape platform
- Otc alterations permit Mar 2024Complete
Re-roofing.
- Otc alterations permit Aug 2023Complete
To compy with complaint # 202311980, remove toilet & shower in garage, remove portion of non load bearing wall in kitchen. verify that existing framing at 2/f can support point load front post and header aove.
- Otc alterations permit Oct 2021Cancelled
Abandon grocery store use extg grocery store and owner's residential unit. proposed single family dwelling. no removal of a residential unit.
- Otc alterations permit Sep 2020Complete
Reroofing.
- Otc alterations permit Jun 2019Complete
5 windows will be replaced by renewal by anderson wood compsite windows. 4 windows are street facing windows. these 4 windows will be casement wood composite windows. the fifth window is not street facing and will be a gliding wood composite window.
- Otc alterations permit Dec 2018Complete
Replace 5 windows not visible from street. max u-facot 0.32. no structural changes. vinyl frames.
- Otc alterations permit Jan 2018Complete
Remove and replace (e) furnace. relocate (e) gas line to accomadate new furnace, install new thermostat and new elec ckt. replace duct work as needed.
- Otc alterations permit Apr 2016Complete
Remodel residential kitchen in-kind, relace cabinets, outlets, sink and d/w.
- Otc alterations permit Oct 2014Complete
Remove non-bearing partition between kitchen and dining area. levels 2 and 3
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
Wildfire risk
Very Low
Wildfire risk is low enough that standard home insurance usually covers it.
FEMA National Risk Index
Nearest public schools
3,500 ft
Lafayette Elementary (3,500 ft), Washington (George) High (5,100 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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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.
- 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.
- Schedule a viewing on a weekday too, between 6:00 and 7:30 PM, the window when the building is busiest: neighbors, parking, elevator.
- 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.
- 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.