Home › Castro/Upper Market › 18th St
3855A 18th St
Condo, 1 ba, 444 sqft, built 1885
Today’s estimate uses 444 sqft and the home’s latest facts. It does not estimate the home’s value at a past sale date.
40 sales inside 0.75 mi since May 2024. Click a sale on the map, or untick it below, to leave it out.
Drag the circle or this strip to change the searchEstimated sale price today
Low confidence
$583,000
$432,000estimated range$782,000
From 39 comps at a weighted median of $1,314 per sqft.
- Block
- 3585
- Lot
- 146
- Sales
- Jun 2024 to Aug 2026
- Prices adjusted to
- 2026-10-31
- Within
- 0.75 mi
- Sold since
- May 2024
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I'm interestedSale prices versus asking
Similarity-weighted median: 11.6% above final asking.
Middle half: at asking to 15.3% above asking.
23 of 39 selected comps have a verified final asking price.
Comparisons use the final advertised asking price from the same sale, before pending or closing.
Comparable sales (40)
Every sale inside the circle starts ticked. Untick one here, or click it on the map, to leave it out. Closer, more similar sales weigh more.
| Address | Sold | Price | Final asking | Sale vs. asking | Adj. today | $/sqft | Size | Dist. | Why | Match | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 150 Eureka St #101 | 2026-04-14 | $720K | No asking price | — | $728K | — | 2bd 2ba | 0.50 mi | no size on record | ||
| 25 Camp St APT 5 | 2026-06-11 | $780K | $699,000 | $81,000 above asking (11.6%) | $813K | $1,638 | 1bd 1ba 496sf | 0.40 mi | |||
| 247 Henry St | 2026-06-24 | $825K | $699,000 | $126,000 above asking (18.0%) | $859K | $1,314 | 1bd 1ba 654sf | 0.53 mi | |||
| 609 Castro St APT B | 2026-06-08 | $904K | $849,000 | $54,500 above asking (6.4%) | $941K | $1,298 | 1bd 1ba 725sf | 0.30 mi | |||
| 93 Hancock St Price inferred from public records | 2024-06-07 | $527K | — | — | $603K | $1,616 | 1bd 1ba 373sf | 0.06 mi | |||
| 1839 15th St #158 | 2025-11-14 | $495K | $525,000 | $30,000 below asking (5.7%) | $560K | $1,120 | 0bd 1ba 500sf | 0.40 mi | |||
| 49 Liberty St APT 2 | 2025-11-12 | $800K | No asking price | — | $905K | $1,361 | 1bd 1ba 665sf | 0.46 mi | |||
| 206 Steiner St #8 | 2026-08-19 | $514K | No asking price | — | $534K | $802 | 1bd 1ba 666sf | 0.72 mi | recent | ||
| 212 Eureka St | 2026-08-18 | $1.25M | $1,088,000 | $167,000 above asking (15.3%) | $1.3M | $1,716 | 2bd 1ba 760sf | 0.50 mi | recent | ||
| 677 Castro St APT 3 | 2026-06-23 | $920K | $899,000 | $21,000 above asking (2.3%) | $958K | $1,229 | 1bd 1ba 780sf | 0.33 mi | |||
| 206 Steiner St APT 3 | 2026-05-06 | $840K | $619,000 | $221,000 above asking (35.7%) | $861K | $1,293 | 1bd 1ba 666sf | 0.72 mi | |||
| 3559 17th St Price inferred from public records | 2024-11-27 | $735K | — | — | $839K | $1,371 | 1bd 1ba 612sf | 0.27 mi | |||
| 45 Bartlett St Unit 416 | 2026-02-26 | $510K | $519,000 cut from $569K | $9,000 below asking (1.7%) | $547K | $1,057 | 1bd 1ba 517sf | 0.64 mi | |||
| 3321 17th St #7 Price inferred from public records | 2024-08-09 | $525K | — | — | $606K | $1,211 | 1bd 1ba 500sf | 0.54 mi | |||
| 49 Liberty St #3 Price inferred from public records | 2024-12-06 | $755K | — | — | $871K | $1,365 | 1bd 1ba 638sf | 0.47 mi | |||
| 1839 15th St APT 455 | 2026-08-27 | $700K | $725,000 | $25,000 below asking (3.4%) | $728K | $966 | 1bd 1ba 753sf | 0.40 mi | recent | ||
| 345 Church St APT 2B | 2025-10-31 | $720K | $699,000 | $21,000 above asking (3.0%) | $815K | $1,230 | 1bd 1ba 662sf | 0.32 mi | |||
| 119 Corwin St APT 3 | 2026-06-24 | $990K | $899,000 | $91,000 above asking (10.1%) | $1.03M | $1,477 | 2bd 1ba 698sf | 0.66 mi | |||
| 2238 Market St Unit 306 | 2026-08-17 | $775K | $845,000 cut from $899K | $70,000 below asking (8.3%) | $805K | $1,128 | 1bd 1ba 714sf | 0.34 mi | recent | ||
| 8 Buchanan St Unit 803 | 2026-05-14 | $670K | $690,000 cut from $700K | $20,000 below asking (2.9%) | $687K | $1,143 | 1bd 1ba 601sf | 0.65 mi | |||
| 1188 Valencia St APT 403 | 2026-06-02 | $657K | No asking price | — | $684K | $1,090 | 1bd 1ba 628sf | 0.67 mi | |||
| 768 Church St #2 Price inferred from public records | 2024-10-17 | $925K | — | — | $1.05M | $1,332 | 1bd 1ba 791sf | 0.19 mi | |||
| 8 Buchanan St Unit 509 | 2026-05-08 | $719K | $719,000 | At asking | $737K | $1,119 | 1bd 1ba 659sf | 0.65 mi | |||
| 4125 24th St APT 4 | 2026-06-01 | $935K | $899,000 | $36,000 above asking (4.0%) | $974K | $1,288 | 2bd 1ba 756sf | 0.73 mi | |||
| 35 Dolores St APT 409 | 2025-10-31 | $675K | $725,000 | $50,000 below asking (6.9%) | $764K | $1,250 | 1bd 1ba 611sf | 0.55 mi | |||
| 380 14th St APT 508 | 2026-06-30 | $825K | $825,000 | At asking | $859K | $1,237 | 2bd 1ba 695sf | 0.67 mi | |||
| 986 South Van Ness Avenue #203 | 2026-05-29 | $640K | $625,000 | $15,000 above asking (2.4%) | $656K | $1,035 | 1bd 1ba 634sf | 0.73 mi | |||
| 85 Duboce Ave APT 301 | 2025-11-25 | $600K | $629,000 | $29,000 below asking (4.6%) | $679K | $1,018 | 1bd 1ba 667sf | 0.74 mi | |||
| 45 Bartlett St Unit 417 | 2026-01-16 | $610K | $625,000 cut from $649K | $15,000 below asking (2.4%) | $699K | $1,056 | 1bd 1ba 662sf | 0.64 mi | |||
| 8 Buchanan St Unit 410 | 2025-11-25 | $722K | $750,000 | $28,500 below asking (3.8%) | $817K | $1,274 | 1bd 1ba 641sf | 0.65 mi | |||
| 3380 20th St APT 101 | 2026-05-21 | $638K | No asking price | — | $654K | $828 | 2bd 1ba 790sf | 0.72 mi | |||
| 1875 Mission St APT 304 | 2026-05-22 | $590K | $599,000 | $9,000 below asking (1.5%) | $605K | $806 | 1bd 1ba 751sf | 0.70 mi | |||
| 8 Buchanan St Unit 806 | 2026-05-01 | $780K | $799,000 | $19,000 below asking (2.4%) | $800K | $1,032 | 1bd 1ba 775sf | 0.65 mi | |||
| 351 Buena Vista Av #802E Price inferred from public records | 2024-12-20 | $825K | — | — | $951K | $1,367 | 1bd 1ba 696sf | 0.68 mi | |||
| 351 Buena Vista Av #204E Price inferred from public records | 2024-08-29 | $715K | — | — | $825K | $1,233 | 1bd 1ba 669sf | 0.68 mi | |||
| 1515 15th St #403 Price inferred from public records | 2024-12-06 | $606K | — | — | $699K | $1,075 | 1bd 1ba 650sf | 0.74 mi | |||
| 550 South Van Ness Av #403 Price inferred from public records | 2024-12-12 | $620K | — | — | $715K | $983 | 1bd 1ba 727sf | 0.68 mi | |||
| 360 Guerrero St #303 Price inferred from public records | 2024-06-11 | $800K | — | — | $915K | $1,169 | 1bd 1ba 783sf | 0.40 mi | |||
| 413 Valencia St #404 Price inferred from public records | 2024-11-04 | $900K | — | — | $1.03M | $1,306 | 2bd 2ba 787sf | 0.56 mi | |||
| 550 South Van Ness Av #308 Price inferred from public records | 2024-10-23 | $615K | — | — | $701K | $880 | 1bd 1ba 796sf | 0.68 mi |
This home's sale history
- 2020-11-18: $565,000 (price inferred from public records, high confidence)