# 1718 Fillmore St · The Rent Hacker > Underwriting record for 1718 Fillmore 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-8afkst/1718-fillmore-st/ Source: The Rent Hacker (https://therenthacker.com/). License: RSL, attribution required — https://therenthacker.com/license.xml --- Evaluated # 1718 Fillmore St Beats renting and index funds on our cautious numbers, but by too little to survive an ordinary rent shortfall. It passed the math, not our bar. 94533 · North Bay Underwritten as of 2026-09-28 · record v16 **Published at our defaults:** House-Hack wins by $3,674 · S&P breakeven 10% · crash floor 2.5% full underwriting, cautious case C- C- — barely clears the cautious case; a normal S&P 500 decade roughly ties it. [Run your own numbers on any building →](/calculator/) ## The three cases Conservative Base Optimistic Verdict House-Hack House-Hack House-Hack Margin vs the S&P path +$3,674 +$357,802 +$704,511 Rent while you live in one unit $5,250/mo $5,850/mo $6,300/mo Rent after you move out $7,000/mo $7,800/mo $8,400/mo Modeled appreciation 2.5%/yr 4.0%/yr 5.5%/yr Repairs allowance $15,000 $8,000 $0 S&P breakeven 10% 13.5% 16.2% Crash floor 2.5% 1% \-0.3% Wealth at year 10 $1,261,775 $1,615,903 $1,962,612 If you sold at year 10 $1,200,897 $1,545,506 $1,881,377 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. [Open these numbers in the calculator →](/calculator/#i=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) Every slider starts at this page's inputs; change any of them and the verdict re-runs at yours. ## Property facts Asking price $951,150 Units 4 Beds / baths 8 / 4 Square feet 3,344 Year built 1963 Property type Multi-Family Days on market 154 Neighborhood Downtown Fairfield Strategy lane MFH owner-occupy hybrid (2-4 unit quadruplex; per-dwelling pricing off the ZIP 2BR band) Nearest catalyst Heart of Fairfield Specific Plan area (0.81 mi) Modeled appreciation 4.0%/yr Unit count verified: 4 units, corroborated by the listing itself and a prior adjudication. MFH owner-occupy hybrid (2-4 unit quadruplex; per-dwelling pricing off the ZIP 2BR band) — Downtown Fairfield · 0.81 mi from Heart of Fairfield Specific Plan area. ## 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 1989→1999 −$502,685 Median window 1999→2009 +$336,043 Best window 1996→2006 +$1,806,470 13 of the 41 windows ended behind the never-buy path. Replay the 2008 crash as it hit this area and the deal ends year 10 $715,408 behind the never-buy path; the deepest point comes in year 7, $772,820 behind. 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, 5 trace to evidence (our listing feed, area comps, county records); 4 are standing conventions; 2 are derived from other inputs. - **Purchase price**: our listing feed · corroborated - **Rent while you live in one unit**: area rent comps and research bands · single source - **Rent after you move out**: an unclassified source · no independent witness - **The rent you would pay on the never-buy path**: area rent comps and research bands · single source - **Property tax rate**: local rent regulation · single source - **Unit count**: a prior adjudicated ruling · corroborated A standing convention is a deliberate modeling choice we apply to every deal. We flag it rather than dress it up as evidence. ## 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 v16 · engine aafb236 · profile fha-house-hack Next ## This is one row of the North Bay board. The run of September 28, 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 Fairfield: [Downtown / West Texas (94533)](/house-hacking/fairfield-downtown-94533/) · [North Bay guide](/house-hacking/north-bay/)