421 45th Avenue, San Francisco
technical data · neighborhood and transit
Quick answers
- Does 421 45th Avenue have open permits or code violations?
- San Francisco Department of Building Inspection lists 44 permits, 22 not closed, and 2 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 421 45th Avenue at risk for?
- FEMA's National Risk Index rates the area relatively moderate overall, with elevated earthquake risk.
Permits and code violations
22 permits not closed out. Unfinished permits pass to the next owner. No open violations.
- Otc alterations permit Mar 2026Complete
Re-roofing: remove and replace roofing material / existing roofing material (in-kind)
- Otc alterations permit Nov 2025Issued
Re-roofing: remove and replace roofing material / existing roofing material (in-kind)
- Otc alterations permit May 2025Complete
Re-roofing: remove and replace roofing material / existing roofing material (in-kind)
- Otc alterations permit Apr 2024Complete
Convert the ground floor into living space. add a new bedroom, media room, a full bathroom, a wet bar and a laundry room. 300 sf additional living space. replace water heater with tankless water heater
- Otc alterations permit Dec 2021Issued
Re-roofing: remove and replace roofing material / existing roofing material (in-kind)
- Otc alterations permit Nov 2018Complete
To comply with nov 201888381 replacing existing stairs & treads. new deck, new fences, retaining walls (new) to hold existing grade.
- Otc alterations permit Mar 2018Issued
Street space
- Otc alterations permit Nov 2017Issued
New gargae door will be installed with vents. old garage door with vents will be removed. replace garage door in-kind sectional door.
- Otc alterations permit Aug 2014Complete
Remodel (e) kitchen, replace cabinets & floor, bring electrical up to code, replace plumbing fixture
- Otc alterations permit Jan 2009Complete
Replace 3 windows with l.b.l. & poly bay brands with like kine & size. retrofit installation windows face side of house. vinyl double pain. u factor less than 0.67.
- Additions alterations or repairs Jan 2007Complete
New deck construction at rear at 2 levels
- Otc alterations permit Sep 2006Issued
Replace kitchen countertop sink & faucet in kind no structural change also electrical code upgrade.
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
2 within 1,650 ft
Nearest: Commercial, 101 Point Lobos Ave (650 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
Wildfire risk
Very Low
Wildfire risk is low enough that standard home insurance usually covers it.
FEMA National Risk Index
Nearest public schools
2,950 ft
Lafayette Elementary (2,950 ft), Washington (George) High (4,550 ft), Presidio Middle (4,950 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
More on 45th 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.
- 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.
- 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.
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.