1647 47th Avenue, San Francisco
technical data · neighborhood and transit
Quick answers
- Does 1647 47th Avenue have open permits or code violations?
- San Francisco Department of Building Inspection lists 21 permits, 7 not closed, and 5 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 1647 47th Avenue at risk for?
- FEMA's National Risk Index rates the area relatively high overall, with elevated earthquake risk.
Permits and code violations
7 permits not closed out. Unfinished permits pass to the next owner. No open violations.
- Otc alterations permit Mar 2026Complete
Revision to pa#202512041037, slab replacement per added due to unexpected cracking and damage to existing
- Otc alterations permit Jan 2026Complete
Remove & install 3 sections of siding 5ft x 7 ft, 10ft x 7ft & 7ft x 5ft with lap site hardie boards. remove 8 x 10 ft of roof existing modified bitumen & new tpo. comply with nov 202548727 #2.
- Otc alterations permit Feb 2024Complete
Re-roofing: remove and replace roofing material / existing roofing material (in-kind)
- Otc alterations permit Jul 2022Complete
Remove and replace insulation & sheetrock in (1) bedroom. 5/8" type x gyp
- Otc alterations permit Apr 2022Complete
Re-roofing: remove and replace roofing material / existing roofing material (in-kind)
- Otc alterations permit Mar 2022Complete
Repair front stair in kind. replace railing and bring up to code.
- Otc alterations permit Apr 2021Complete
1 bathroom remodel in-kind. new vanity, shower & toilet. no new wall. no wal relocation. new lighting shall comply with cec150.0(k)s.
- Otc alterations permit May 2020Cancelled
Front exterior stair is rotten & unsafe. replace all steps and handrail, in-kind, no changes to any configuration and structural work. all work in-kind, less than 50% repair/replacement.
- Otc alterations permit Apr 2019Complete
Reroofing
- Otc alterations permit May 2017Issued
Street space permit (painting)
- Otc alterations permit Oct 2016Issued
Reroofing
- Otc alterations permit Nov 2013Cancelled
Repair staircase and landing deck boards with new 2 x 6 redwood. less than 50% visible from the street
San Francisco Department of Building Inspection
Safety and environment
FEMA natural hazard risk
Relatively High
Highest for this area: earthquake. These drive insurance cost here.
FEMA National Risk Index, census tract
Leaking fuel tanks
3 within 1,650 ft
Nearest: Tosco (Unocal) Station #3390, 3701 Noriega St. (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
Nearest public schools
1,150 ft
Noriega Children Center (1,150 ft), Key (Francis Scott) Elementary (1,600 ft), Sunset Elementary (2,800 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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1647 47th Avenue sits 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 47th 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.
- 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.
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.