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Underwrite an address →Underwrite — $79

Property overview

519 Natoma St, San Francisco, CA 94103

At our cautious numbers, renting and putting the same money in index funds comes out ahead. It did not pass our bar.

SoMa, on the residential Natoma alley · Central SoMa Special Use District 0.5 mi

Analysis of 2026-09-01 · page updated 2026-10-09

Ask $1,598,000 Beds / baths 4 / 4 Listed sqft 3,030 Legal units (roll) 4 Days on market 182 as of 2026-10-09 HOA $0 APN 3726054

The underwrite

What the $79 underwrite contains

The facts below are public, and so is every source behind them. What a buyer pays for is the answer and the working behind it.

  • Our answer at cautious, expected and best-case rents, side by side.
  • Every rent we used, and the registry cells it came from.
  • Tax reset arithmetic at this ask, with each parcel charge named.
  • How far rents can fall before the answer turns over.
  • What would change the answer.
  • What to demand in writing before you sign.

Delivered within one business day. Every Bay Area 2–4 unit that beats renting and index funds, the week it lists.

Verification

What we verified

Fact Status Source
4 legal units, four 1bd/1ba flats corroborated the listing's subtype, its prose ('four large one bedroom units, all of which are currently tenant-occupied'), and the meter room's five subpanels labeled 519 A through D plus House in the photo frames
4 bedrooms, 4 baths, 3,030 sqft, built 1907 corroborated our listing feed and the live listing agree on all four, and the one-bedroom-per-flat mix sums to each total exactly
Ask $1,598,000 verified our listing feed and the live listing agree; listed April 10 at $1,698,000, cut 5.9% on May 7, and 144 days on market at this reading
Measured gross rent $10,468/mo across all four flats verified stated on the listing with a clean denominator for once: the prose says all four units are tenant-occupied, so the per-unit average is $2,617
Two flats carried recent rental-campaign asks of $2,600 and $2,900 verified property-manager ad frames embedded in the sale gallery, each chip reading 1 bed / 1 bath with a monthly rent; direct per-unit witnesses that bracket the $2,617 measured average
FY 2025-26 tax bill $20,755.50 on a $1,555,397 assessment, both installments paid verified SF Treasurer secured portal, bill #20250373479; ad valorem plus direct charges sum to the total to the penny; current owner since November 23, 2022
Show the other 6 checks
Fact Status Source
Direct charges run $2,360/yr, led by a $967 SoMa West Community Benefit District assessment verified the bill's levying-authority table; the district was established in 2019 and runs to June 2034, and the charge does not move with price
The FY 2023-24 bill was paid late, both installments on one day verified the treasurer's account history: $10,816.70 and $10,871.70 both paid 05/28/2024, against the following year's on-time $10,075.35 halves; the amounts are consistent with delinquency penalties
Sold November 2022 for $1,495,000 verified sale history on the listing; the ask is 6.9% above that sale after one 5.9% cut from the April relist at $1,698,000
3 DBI complaints since 2004, all routine, none active verified DataSF DBI complaints census, block 3726 lot 054: two routine inspections and one apartment-house health-and-safety inspection, all closed
The 2004 renovation permit was issued and never marked complete diverges DataSF building-permit census: a $150,000 renovation of the four-unit building (exit stair, light-well infill) issued November 2004 with no completion date, and a $60,000 kitchen-and-bath permit for '4 studio apt' that expired; the finished interiors in the photos exist, and the paper trail behind them stops short
40 listing photos analyzed, 2 flags, citations re-anchored verified photo analysis pass (2026-08-31) with citation check on 2026-09-01; both flags' citations had drifted onto bedroom and bathroom frames and were re-anchored to the garage frames; two observed counts did not resolve by eye and were dropped before rendering

11 facts checked against a named source. 1 we could not settle. 9 open questions, written out in the underwrite.

Assessor

What the roll says

Assessed value
$1,555,397
Rate used
1.33%
Tax bill at this ask
$18,899/yr
With parcel charges
$21,259/yr

A bill on the roll belongs to the seller. A sale resets the assessment, so the figure above is what a buyer at this ask would owe.

Community facilities district: none: no Mello-Roos or community-facilities line, but the direct charges deserve the same scrutiny a CFD would get, because they total $2,360.12 a year and the largest of them is a district assessment with a 2034 expiration

Standing

Where this sat

Underwritten in the San Francisco run of October 6, 2026.