Home › Castro/Upper Market › 20th St
4100 20th St
Single-family home, 4 bd, 3 ba, 2,678 sqft, built 1905
Today’s estimate uses 2,678 sqft and the home’s latest facts. It does not estimate the home’s value at a past sale date.
37 sales inside 0.35 mi since Apr 2025. 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
Medium confidence
$4,914,000
From 37 comps at a weighted median of $1,835 per sqft.
- Block
- 3602
- Lot
- 015
- Sales
- Nov 2025 to Oct 2026
- Prices adjusted to
- 2026-10-30
- Within
- 0.35 mi
- Sold since
- Apr 2025
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I'm interestedSale prices versus asking
Similarity-weighted median: 31.3% above final asking.
Middle half: 7.9% above asking to 47.6% above asking.
30 of 37 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 (37)
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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 4118 20th St | 2026-04-29 | $4.4M | $2,995,000 | $1,405,000 above asking (46.9%) | $4.51M | $1,972 | 4bd 4ba 2,287sf | <0.05 mi | nearby on same street, 4 bd | ||
| 476 Liberty St | 2026-09-28 | $5.6M | $3,795,000 | $1,805,000 above asking (47.6%) | $5.6M | $1,747 | 4bd 4ba 3,205sf | 0.07 mi | 4 bd, recent | ||
| 971 Sanchez St | 2026-10-16 | $4.95M | $2,995,000 | $1,956,522 above asking (65.3%) | $4.75M | $1,933 | 4bd 3ba 2,455sf | 0.34 mi | similar size, 4 bd, recent | ||
| 537 Liberty St | 2026-08-20 | $3.58M | $3,699,000 | $119,000 below asking (3.2%) | $3.78M | $1,667 | 5bd 3ba 2,269sf | 0.09 mi | recent | ||
| 18 Ford St | 2026-09-28 | $4.34M | No asking price | — | $4.34M | $1,835 | 3bd 2ba 2,365sf | 0.29 mi | recent | ||
| 323 Eureka St | 2026-03-12 | $5M | $3,495,000 | $1,504,999 above asking (43.1%) | $5.19M | $2,016 | 4bd 4ba 2,576sf | 0.29 mi | similar size, 4 bd | ||
| 441 Douglass St | 2026-05-18 | $4.5M | No asking price | — | $4.66M | $1,701 | 3bd 4ba 2,737sf | 0.35 mi | similar size | ||
| 143 Collingwood St | 2026-06-08 | $4.85M | $3,695,000 | $1,155,000 above asking (31.3%) | $5.03M | $1,736 | 4bd 4ba 2,895sf | 0.22 mi | similar size, 4 bd | ||
| 279 Diamond St | 2026-01-28 | $4.58M | $3,495,000 | $1,085,000 above asking (31.0%) | $5.34M | $1,773 | 4bd 3ba 3,010sf | 0.22 mi | 4 bd | ||
| 3983 19th St | 2026-02-11 | $3.3M | $3,295,000 | $5,000 above asking (0.2%) | $3.53M | $1,598 | 4bd 3ba 2,208sf | 0.09 mi | 4 bd | ||
| 3761 21st St | 2026-02-03 | $4.63M | $4,295,000 | $340,000 above asking (7.9%) | $4.96M | $2,203 | 4bd 4ba 2,250sf | 0.15 mi | 4 bd | ||
| 282 Eureka St | 2026-03-30 | $3.9M | No asking price | — | $4.05M | $1,726 | 4bd 3ba 2,346sf | 0.30 mi | 4 bd | ||
| 335 Diamond St | 2026-04-08 | $6.42M | $6,800,000 | $375,000 below asking (5.5%) | $6.58M | $2,072 | 3bd 3ba 3,178sf | 0.22 mi | |||
| 3960 20th St | 2025-11-10 | $4.7M | $4,395,000 | $305,000 above asking (6.9%) | $5.47M | $2,372 | 4bd 4ba 2,308sf | 0.18 mi | same street, 4 bd | ||
| 3627 21st St | 2026-04-20 | $5.4M | $4,700,000 | $700,000 above asking (14.9%) | $5.53M | $1,843 | 3bd 3ba 3,003sf | 0.25 mi | |||
| 4075 20th St | 2026-06-26 | $5.58M | $4,295,000 | $1,285,000 above asking (29.9%) | $5.78M | $1,775 | 4bd 3ba 3,258sf | 0.05 mi | nearby on same street, 4 bd | ||
| 4048 23rd St | 2026-05-15 | $4.79M | $3,195,000 | $1,594,423 above asking (49.9%) | $4.96M | $2,335 | 4bd 2ba 2,122sf | 0.34 mi | 4 bd | ||
| 3666 22nd St | 2026-07-06 | $3.8M | $3,100,000 | $700,000 above asking (22.6%) | $4.04M | $1,939 | 3bd 3ba 2,085sf | 0.28 mi | |||
| 3853 22nd St | 2026-03-10 | $4.58M | $2,598,000 | $1,977,000 above asking (76.1%) | $4.75M | $2,259 | 3bd 3ba 2,103sf | 0.25 mi | |||
| 731 Noe St | 2026-06-24 | $3.55M | $2,695,000 | $855,000 above asking (31.7%) | $3.68M | $2,080 | 3bd 2ba 1,769sf | 0.06 mi | |||
| 80 Diamond St | 2026-04-22 | $3.83M | $2,995,000 | $833,000 above asking (27.8%) | $3.92M | $1,877 | 3bd 3ba 2,090sf | 0.33 mi | |||
| 4431 19th St | 2026-04-24 | $2.6M | $2,500,000 | $100,000 above asking (4.0%) | $2.66M | $1,302 | 3bd 2ba 2,046sf | 0.34 mi | |||
| 28 Hartford St | 2026-04-24 | $3M | No asking price | — | $3.07M | $1,606 | 3bd 3ba 1,915sf | 0.29 mi | |||
| 621 Sanchez St | 2025-11-05 | $2.9M | No asking price | — | $3.38M | $1,409 | 4bd 3ba 2,400sf | 0.16 mi | 4 bd | ||
| 449 Alvarado St | 2026-06-04 | $4.95M | $3,750,000 | $1,200,000 above asking (32.0%) | $5.13M | $3,023 | 4bd 3ba 1,697sf | 0.32 mi | 4 bd | ||
| 3974 22nd St | 2026-02-23 | $3.08M | $2,795,000 | $280,000 above asking (10.0%) | $3.29M | $1,777 | 3bd 2ba 1,850sf | 0.30 mi | |||
| 308 Diamond St | 2025-11-12 | $3M | $2,750,000 | $250,000 above asking (9.1%) | $3.49M | $1,911 | 3bd 2ba 1,828sf | 0.25 mi | |||
| 3622 21st St | 2026-02-17 | $3.3M | $1,988,000 | $1,312,000 above asking (66.0%) | $3.53M | $1,895 | 2bd 2ba 1,862sf | 0.24 mi | |||
| 938 Sanchez St | 2025-11-05 | $6.5M | $5,995,000 | $505,000 above asking (8.4%) | $7.57M | $1,949 | 4bd 4ba 3,885sf | 0.30 mi | 4 bd | ||
| 264 Liberty St | 2026-05-11 | $3.75M | $1,995,000 | $1,755,000 above asking (88.0%) | $3.88M | $2,174 | 2bd 2ba 1,785sf | 0.30 mi | |||
| 306 Diamond St | 2025-11-13 | $2.6M | $1,750,000 | $850,000 above asking (48.6%) | $3.03M | $1,685 | 3bd 2ba 1,797sf | 0.25 mi | |||
| 522 Liberty St | 2025-11-26 | $2.1M | $2,195,000 | $95,000 below asking (4.3%) | $2.45M | $1,519 | 3bd 2ba 1,610sf | 0.06 mi | |||
| 359 Diamond St | 2026-02-04 | $2.23M | No asking price | — | $2.39M | $1,542 | 3bd 2ba 1,550sf | 0.24 mi | |||
| 359 Douglass St | 2026-03-11 | $2.06M | $1,195,000 | $860,000 above asking (72.0%) | $2.13M | $1,280 | 2bd 1ba 1,667sf | 0.34 mi | |||
| 4001 21st St | 2026-01-06 | $8.16M | No asking price | — | $9.51M | $2,502 | 0bd 0ba 3,800sf | 0.23 mi | |||
| 381 Liberty St | 2026-06-04 | $8.75M | $5,995,000 | $2,755,000 above asking (46.0%) | $9.07M | $2,184 | 5bd 4ba 4,152sf | 0.18 mi | |||
| 3616 21st St | 2026-01-30 | $4.23M | $2,188,000 | $2,037,888 above asking (93.1%) | $4.92M | $2,589 | 2bd 2ba 1,902sf | 0.25 mi |
This home's sale history
- 2019-05-17: $2,900,000 (price inferred from public records, high confidence)