# 508 Cabrillo St · The Rent Hacker > Underwriting record for 508 Cabrillo St (San Francisco): the published verdict at The Rent Hacker's defaults, plus a calculator that reruns it at your numbers. Canonical: https://therenthacker.com/property/rh-8180re/508-cabrillo-st/ Source: The Rent Hacker (https://therenthacker.com/). License: RSL, attribution required — https://therenthacker.com/license.xml --- Evaluated # 508 Cabrillo St At our cautious numbers, renting and putting the same money in index funds comes out ahead. It did not pass our bar. 94118 · San Francisco Underwritten as of 2026-10-06 · record v21 **Published at our defaults:** loses to the S&P, behind by $745,220 · S&P breakeven 0% first-pass screen [Run your own numbers on any building →](/calculator/) [Open these numbers in the calculator →](/calculator/#i=eyJzdGFydGluZ0NhcGl0YWwiOjI1MDAwMCwidGFrZUhvbWUiOjUyMDAsIndlZWtseUNvc3QiOjc1LCJkb3duUGN0IjozLjUsInJhdGUiOjcuMjgsInRheFBjdCI6MS4yNTEzOTQsImluc1BjdCI6MC41LCJwbWlSYXRlIjowLjUsImJ1eUNsb3NpbmdDb3N0UGN0IjozLCJ1dGlsaXRpZXMiOjUwMCwiaG9hIjowLCJtYWludFZhY2FuY3lQY3QiOjEwLCJlbWVyZ2VuY3lNb250aHMiOjEsInNlbGxpbmdDb3N0UGN0Ijo1LCJpbmZsYXRpb25SYXRlIjozLCJpbnZlc3RSZXQiOjEwLCJoYWNrWWVhcnMiOjIsInllYXJzIjoxMCwidGVuYW50UGF5c1V0aWxzIjp0cnVlLCJwQSI6MTk4MDAwMCwickEiOjczODUsImZ1bGxSZW50QSI6MTEyNjEsInBoYXNlMkJhc2VtZW50UmVudEEiOjAsInJlcEEiOjE1MDAwLCJhcHBBIjoyLjUsInJnQSI6MiwidW5pdHMiOjQsIm1hcmdpbmFsVGF4UmF0ZVBjdCI6MCwibGFuZFZhbHVlUGN0IjozMCwicHJvcFRheEdyb3d0aFBjdCI6MiwicGhhc2UyTW9kZSI6InJlbnQiLCJwaGFzZTJVdGlscyI6MzAwLCJwaGFzZTJSZW50IjozMDAwLCJwaGFzZTJSZW50R3Jvd3RoIjozLCJwaGFzZTJSZW50ZXJJbnMiOjE1LCJwaGFzZTJQcmljZSI6MzUwMDAwLCJwaGFzZTJEb3duUGN0Ijo1LCJwaGFzZTJNb3J0UmF0ZSI6Ny4yOCwicGhhc2UyUG1pUmF0ZSI6MC41LCJwaGFzZTJBcHAiOjMsInBoYXNlMlRheFBjdCI6MS4yMSwicGhhc2UySW5zUGN0IjowLjUsInBoYXNlMkhvYSI6MCwibW9udGhseVJlbnQiOjMwMDAsInJlbnRJbmZsYXRpb24iOjMsInJlbnRlcklucyI6MTUsInJlbnRlclV0aWxzIjozMDAsIl92IjoxLCJfbWV0YSI6eyJhZGRyZXNzIjoiNTA4IENhYnJpbGxvIFN0IiwiemlwIjoiOTQxMTgiLCJkYXRlIjoiMjAyNi0xMC0wNiJ9fQ==) Every slider starts at this page's inputs; change any of them and the verdict re-runs at yours. ## Property facts Asking price $1,980,000 Units 4 Beds / baths 8 / 4 Square feet 3,720 Year built 1909 Property type Multi-Family Unit count verified: 4 units, corroborated by the listing itself. ## 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 San Francisco 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 −$2,444,836 Median window 1991→2001 −$18,669 Best window 1996→2006 +$3,254,323 21 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 $1,091,654 behind the never-buy path; the deepest point comes in year 7, $1,236,899 behind. The replay holds rent growth to the local legal cap the whole way down. These windows track San Francisco 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 ±1.8 points/yr or more, and the largest gap since 1975 was 7.4 points/yr. A specific building varies more than its ZIP, not less. ## Where these numbers come from Of the 10 inputs behind this analysis, 5 trace to evidence (our listing feed, area comps, county records); 2 are standing conventions; 1 is derived from other inputs. - **Purchase price**: our listing feed · sources disagree - **Rent while you live in one unit**: our property registry · single source - **Rent after you move out**: our property registry · single source - **The rent you would pay on the never-buy path**: an unclassified source · no independent witness - **Property tax rate**: local rent regulation · 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. ## What we could not verify - How far these numbers could move: we run that spread only for the eight strongest properties in each ZIP, and this one was not among them. The cautious numbers above are the only ones we have for it. Members on a paid plan can request verification. ## Order the verified underwrite This page is our automated underwriting. Order the verified report and a person does the rest by hand: the live listing, the photos, the parcel's exact tax bill, the rents. The finished report publishes right here on this page, within one business day. [Underwrite this building — $79](/lookup/?address=508%20Cabrillo%20St#underwrite) or [take the pass](/checkout/?tier=pass) at $49/mo and open every building that wins, the week it lists. ## 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 v21 · engine aafb236 · profile fha-house-hack Next ## This is one row of the San Francisco board. The run of October 6, 2026 put every two-to-four-unit listing in San Francisco through the same comparison. The rest of the board, losers and rejections included, is one page. [See the San Francisco board](/board/sf-proper/) [Underwrite one address for $79](/lookup/#underwrite) [Take the pass, $49/mo](/checkout/?tier=pass&r=sf) In our guide to house hacking San Francisco: [Inner Richmond / Laurel Heights / Presidio Heights (94118)](/house-hacking/sf-inner-richmond-94118/) · [San Francisco guide](/house-hacking/san-francisco/)