100 Florentine Street, San Francisco
technical data · neighborhood and transit
Quick answers
- Does 100 Florentine Street have open permits or code violations?
- San Francisco Department of Building Inspection lists 17 permits, 10 not closed, and 33 violations, 12 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 100 Florentine Street at risk for?
- FEMA's National Risk Index rates the area relatively moderate overall, with elevated earthquake risk.
Permits and code violations
10 permits not closed out. Unfinished permits pass to the next owner. 12 open violations.
- Otc alterations permit Feb 2026Complete
Legalize water heater installation, replace dryer vent, repair ceiling damage, repair exposed wire. comply with nov#202543087 items# 1, 2 and 4. comply with nov#202538319, items# 1 and 2.
- Otc alterations permit Jan 2026Withdrawn
Relocate existing front door. add a laundry closet.
- Otc alterations permit Jan 2025Complete
Document as-built facade for wall facing north per planning departments requested. (all work completed under bpa#: 201810233963 and 201904238750)
- Otc alterations permit Dec 2024Issued
Per pa #201904238750, add address 100a florentine ave to apn 676/001 for adu.
- Additions alterations or repairs Apr 2019Complete
Addition of dwelling unit per ord# 95-17 w/ 1 bedrm, 1 bath, 1 kitchen & living rm.
- Additions alterations or repairs Feb 2019Reinstated
Raising (e) structure, seismic upgrade of foundation & structure, horizontal expansion of each level, deck, creation of adu within bldg perimeter per ordinance 95-17. all (n) interior kitchens, bathrooms, finishes & insulations.
- Additions alterations or repairs Feb 2019Reinstated
Raising (e) structure, seismic upgrade of foundation & structure, horizontal expansion of each level, deck, creation of adu within bldg perimeter per ordinance 95-17. all (n) interior kitchens, bathrooms, finishes & insulations.
- Additions alterations or repairs Oct 2018Complete
Comply to 201862208, 201887101. planning case #2018008125enf. 1/fl: revert full bath back to half bath. remove & in-fill ext. door back to last legal used. 2/fl: remove 1 unpermitted bath, remodel kitchen. 2 bathrooms & legalize deck & stairway at rear. remodel & legalize (e) bathrooms
- Otc alterations permit Feb 2017Complete
Add 2 bedrooms, 2 full baths, entertainment, office, mud room, storage and 1 powder rm on (garage level)1st fl per plan
- Otc alterations permit Jul 2013Complete
1st floor repair existing exterior wall in-kind caused by car accident including windows. comply with complaint 201305721
- Otc alterations permit Feb 2011Complete
Rearrange rooms on 2nd floor. add 2 bedrooms, laundry, storage and 2 full bath on ground floor. relocate water heater and furnace per plan.
- Otc alterations permit Jul 2002Issued
Street space
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
4 within 1,650 ft
Nearest: Former Gas Station, 5425-5427 Mission Street (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
1,200 ft
Longfellow Elementary (1,200 ft), George Washington Elementary (1,800 ft), Panorama Elementary (2,300 ft). Confirm the assigned school with the district.
U.S. Department of Education, NCES
Major airport
7.4 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
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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 Florentine Street
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.
- Look at the stairwell (cleanliness, smell) and the association's notice board: unpaid dues, conflicts, recent decisions.
- Schedule a viewing on a weekday too, between 6:00 and 7:30 PM, the window when the building is busiest: neighbors, parking, elevator.
- Knock on a neighboring door and ask two things: what bothers them most often, and what work is planned for the building.
- 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.
- 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.
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