# 900 Santa Clara St · The Rent Hacker > Underwriting record for 900 Santa Clara St (North Bay): the published verdict at The Rent Hacker's defaults, plus a calculator that reruns it at your numbers. Canonical: https://therenthacker.com/property/rh-7okonj/900-santa-clara-st/ Source: The Rent Hacker (https://therenthacker.com/). License: RSL, attribution required — https://therenthacker.com/license.xml --- Published pick # 900 Santa Clara St Went out to readers, ahead of renting and index funds on our cautious numbers. The rent-shortfall test we use now wasn't run on it. 94590 · North Bay Verified Underwritten as of 2026-08-24 · record v1 · Board pick #1 · 2026-08-24 · week 4 on the board **Published at our defaults:** House-Hack wins by $1,024,256 · S&P breakeven 18.7% · crash floor -23.6% full underwriting, cautious case A A — the S&P 500 would need 17–21% a year, every year for a decade, to tie. [Run your own numbers on any building →](/calculator/) This record was published before we began recording the mortgage rate behind each verdict, so it cannot be re-run at your numbers. ## The three cases Conservative Base Optimistic Verdict House-Hack House-Hack House-Hack Margin vs the S&P path +$1,024,256 +$1,316,832 +$1,634,554 Rent while you live in one unit $6,900/mo $7,350/mo $7,800/mo Rent after you move out $9,200/mo $9,800/mo $10,400/mo Modeled appreciation 4.0%/yr 5.5%/yr 7.0%/yr Repairs allowance $15,000 $8,000 $0 S&P breakeven 18.7% 20.4% 22.1% Crash floor \-23.6% — — Wealth at year 10 $2,181,121 $2,473,697 $2,791,419 If you sold at year 10 $2,127,462 $2,411,777 $2,720,110 Conservative leads; base and optimistic are the accompanying range, never the headline. Margin is vs. investing the same money in the S&P 500; the S&P breakeven is the yearly stock return that would tie it, and the crash floor is the yearly appreciation below which the deal loses. Wealth at year 10 counts home equity at full value; the sold line subtracts selling costs. ## Property facts Asking price $725,000 Units 4 Beds / baths 8 / 4 Square feet 3,248 Year built 1972 Property type Multi-Family Days on market 22 Neighborhood Downtown Vallejo (Historic Core) Strategy lane Live in one unit, rent the other three Nearest catalyst Vallejo Ferry Terminal / Transit Center (0.44 mi) Modeled appreciation 5.5%/yr Unit count verified: 4 units, corroborated by the listing itself. Live in one unit, rent the other three — Downtown Vallejo (Historic Core) · 0.44 mi from Vallejo Ferry Terminal / Transit Center. From the 2026-08-24 screen: 47 scanned · 22 beat the S&P at our defaults · 25 rejected; this one ranked #1. ## If the market turns Modeled appreciation is an assumption, so we replayed this deal against history: every 10-year window in the federal house-price index for Solano County (41 windows), each one swapping its actual price path in for our modeled appreciation. History replay Years Ends vs the never-buy path Worst window 2002→2012 +$418,225 Median window 1988→1998 +$1,211,567 Best window 1975→1985 +$2,106,058 None of the 41 windows ended behind the never-buy path. Replay the 2008 crash as it hit this area and the deal still ends year 10 $248,184 ahead of the never-buy path. These windows track Solano County as a whole. Within the county, individual ZIPs' realized 10-year outcomes typically differed from the county's by about ±0.6 points/yr — one zip-decade in ten differed by ±2.2 points/yr or more, and the largest gap since 1977 was 3.7 points/yr. A specific building varies more than its ZIP, not less. ## Where these numbers come from Of the 12 inputs behind this analysis, 6 trace to evidence (our listing feed, area comps, county records); 3 are standing conventions; 3 are derived from other inputs. - **Purchase price**: our listing feed · corroborated - **Rent while you live in one unit**: derived from other inputs here · single source - **Rent after you move out**: area rent comps and research bands · single source - **The rent you would pay on the never-buy path**: area rent comps and research bands · single source - **Property tax rate**: our listing feed · single source - **Unit count**: our listing feed · corroborated A standing convention is a deliberate modeling choice we apply to every deal. We flag it rather than dress it up as evidence. ## Why it made the board Four self-contained 2-bedroom apartments at **$725,000** works out to **$181,000 a door**, and the three you don't live in bring **$6,900/mo** at cautious rents. The S&P 500 would have to return **18.7% a year for ten straight years** to match that, **1.7 points** clear of anything else on the board. Week 4 listed with no price movement, so the open question is condition: the verification capture notes coin-op common laundry and wall furnaces with no cooling on **1972** stock. ## The play Live in one unit, rent the other three. Financing basis: Owner-occupied at 3.5% down. ## Tenant pool Ferry commuters / SF-priced-out workforce (Vallejo Ferry Terminal, ~1.1 mi) ## Rent basis - Hack phase (you occupy one unit): $6,900/mo - Full rental (after move-out): $9,200/mo ## Published sensitivity bands Band Rent Wealth vs S&P Cautious $9,200/mo +$1,024,256 Expected $9,800/mo +$1,316,832 Best case $10,400/mo +$1,634,554 ## Want this for an address you pick? Every week we underwrite this metro’s 2-4 unit listings against the S&P and publish the [whole board](/board/), with the reason on every one we rejected. [Or look up a specific San Francisco address](/lookup/) ## Want this analysis for another address? Any San Francisco address, underwritten the same way — cautious rents, the registry, the S&P line. [Underwrite an address →](/lookup/) A full report like this one, for an address you pick: Underwrite an address — $79, delivered within one business day. Record v1 · engine aafb236 · profile fha-house-hack Next ## This is one row of the North Bay board. The run of August 24, 2026 put every two-to-four-unit listing in North Bay through the same comparison. The rest of the board, losers and rejections included, is one page. [See the North Bay board](/board/sf-north-bay/) [Underwrite one address for $79](/lookup/#underwrite) [Take the pass, $49/mo](/checkout/?tier=pass&r=nb) In our guide to house hacking Vallejo: [Downtown / Mare Island (94590)](/house-hacking/vallejo-94590/) · [North Bay guide](/house-hacking/north-bay/)