Home › Castro/Upper Market › 20th St
4521 20th St
Single-family home, 1 ba, 3,800 sqft, built 1900
Today’s estimate uses 3,800 sqft and the home’s latest facts. It does not estimate the home’s value at a past sale date.
69 sales inside 0.75 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
$6,738,000
$4,852,000estimated range$8,288,000
From 69 comps at a weighted median of $1,773 per sqft.
- Block
- 2749
- Lot
- 048
- Sales
- Oct 2025 to Oct 2026
- Prices adjusted to
- 2026-10-30
- Within
- 0.75 mi
- Sold since
- Apr 2025
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I'm interestedSale prices versus asking
Similarity-weighted median: 16.7% above final asking.
Middle half: 3.2% above asking to 32.1% above asking.
53 of 69 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 (69)
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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 4558 19th St | 2026-06-12 | $5.4M | $5,495,000 | $95,000 below asking (1.7%) | $5.6M | $1,490 | 5bd 6ba 3,757sf | 0.17 mi | similar size | ||
| 553 Douglass St | 2026-08-27 | $5M | $3,785,000 | $1,214,999 above asking (32.1%) | $5.28M | $1,707 | 5bd 4ba 3,095sf | 0.17 mi | recent | ||
| 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 | 0.36 mi | recent | ||
| 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 | 0.11 mi | |||
| 481 Jersey St | 2026-04-20 | $7.6M | No asking price | — | $7.79M | $2,164 | 4bd 3.5ba 3,600sf | 0.51 mi | similar size | ||
| 10 Deming St | 2026-07-28 | $5.9M | $4,450,000 | $1,450,000 above asking (32.6%) | $6.28M | $1,955 | 4bd 4ba 3,211sf | 0.42 mi | |||
| 4524 25th St | 2026-06-01 | $6.73M | $5,995,000 | $738,500 above asking (12.3%) | $6.98M | $1,863 | 5bd 5ba 3,745sf | 0.54 mi | similar size | ||
| 4001 21st St | 2026-01-06 | $8.16M | No asking price | — | $9.51M | $2,502 | 0bd 0ba 3,800sf | 0.17 mi | similar size | ||
| 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 | 0.11 mi | |||
| 221 Danvers St | 2026-07-14 | $4.55M | $3,995,000 | $555,000 above asking (13.9%) | $4.84M | $1,662 | 3bd 4ba 2,912sf | 0.28 mi | |||
| 441 Douglass St | 2026-05-18 | $4.5M | No asking price | — | $4.66M | $1,701 | 3bd 4ba 2,737sf | <0.05 mi | |||
| 4258 26th St | 2026-04-23 | $5M | No asking price | — | $5.12M | $1,330 | 5bd 5ba 3,854sf | 0.65 mi | similar size | ||
| 889 Elizabeth St | 2026-03-20 | $6.9M | $5,695,000 | $1,205,000 above asking (21.2%) | $7.17M | $2,104 | 4bd 4ba 3,405sf | 0.40 mi | |||
| 941 Diamond St | 2026-10-01 | $5.66M | $4,850,000 | $807,750 above asking (16.7%) | $5.42M | $1,720 | 4bd 4ba 3,153sf | 0.53 mi | recent | ||
| 49 Eagle St | 2025-12-11 | $5.63M | No asking price | — | $6.66M | $2,024 | 4bd 5ba 3,290sf | 0.26 mi | |||
| 818 Douglass St | 2026-02-18 | $7.25M | $5,898,000 | $1,352,000 above asking (22.9%) | $7.75M | $2,257 | 4bd 4ba 3,434sf | 0.48 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 | 0.50 mi | similar size | ||
| 980 Ashbury St | 2026-07-09 | $4.28M | $3,950,000 | $325,000 above asking (8.2%) | $4.55M | $1,395 | 4bd 4ba 3,260sf | 0.64 mi | |||
| 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 | 0.06 mi | |||
| 4376 17th St | 2026-04-15 | $3.4M | $3,295,000 | $105,000 above asking (3.2%) | $3.48M | $1,144 | 3bd 4ba 3,045sf | 0.41 mi | |||
| 471 Hoffman Ave | 2026-09-22 | $9.1M | $6,995,000 | $2,105,000 above asking (30.1%) | $9.1M | $2,132 | 5bd 5ba 4,268sf | 0.52 mi | recent | ||
| 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 | 0.25 mi | |||
| 168 Jersey St | 2025-11-10 | $7.2M | No asking price | — | $8.39M | $2,254 | 4bd 5ba 3,720sf | 0.67 mi | similar size | ||
| 1201 Douglass St | 2026-10-15 | $6.3M | $5,495,000 | $805,000 above asking (14.6%) | $6.04M | $2,001 | 4bd 4ba 3,017sf | 0.71 mi | recent | ||
| 4048 22nd St | 2026-07-15 | $3.77M | No asking price | — | $4.02M | $1,606 | 3bd 2ba 2,500sf | 0.20 mi | |||
| 1002 Clayton St | 2026-10-16 | $5.4M | $3,595,000 | $1,805,000 above asking (50.2%) | $5.18M | $1,741 | 4bd 4ba 2,972sf | 0.65 mi | recent | ||
| 267 Clipper St | 2026-08-31 | $6.4M | No asking price | — | $6.76M | $2,236 | 4bd 3ba 3,023sf | 0.71 mi | recent | ||
| 282 Eureka St | 2026-03-30 | $3.9M | No asking price | — | $4.05M | $1,726 | 4bd 3ba 2,346sf | <0.05 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 | 0.36 mi | same street | ||
| 316 Douglass St | 2026-04-09 | $4.2M | $3,695,000 | $505,000 above asking (13.7%) | $4.3M | $1,779 | 3bd 4ba 2,420sf | 0.11 mi | |||
| 771 Elizabeth St | 2026-07-24 | $5.85M | $4,795,000 | $1,055,000 above asking (22.0%) | $6.22M | $2,432 | 4bd 4ba 2,559sf | 0.38 mi | |||
| 591 Diamond St | 2026-10-05 | $4.38M | $3,295,000 | $1,080,000 above asking (32.8%) | $4.19M | $1,769 | 3bd 4ba 2,370sf | 0.32 mi | recent | ||
| 4822 19th St | 2025-12-17 | $3.48M | $3,475,000 | At asking | $4.11M | $1,440 | 4bd 5ba 2,855sf | 0.33 mi | |||
| 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 | 0.29 mi | recent | ||
| 100 Saint Germain Ave | 2026-06-11 | $8.25M | No asking price | — | $8.55M | $2,038 | 4bd 5ba 4,195sf | 0.66 mi | similar size | ||
| 439 Clipper St | 2025-12-05 | $4.85M | $4,850,000 | At asking | $5.74M | $1,818 | 4bd 6ba 3,157sf | 0.63 mi | |||
| 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 | 0.54 mi | recent | ||
| 918 Clayton St | 2026-05-07 | $3.6M | No asking price | — | $3.73M | $1,202 | 5bd 3ba 3,100sf | 0.72 mi | |||
| 893 Elizabeth St | 2026-06-15 | $3.21M | $3,295,000 | $82,500 below asking (2.5%) | $3.33M | $1,249 | 4bd 3ba 2,665sf | 0.41 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 | 0.47 mi | similar size | ||
| 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 | 0.54 mi | |||
| 180 Palo Alto Ave | 2025-12-26 | $6M | $6,300,000 cut from $7M | $300,000 below asking (4.8%) | $7.1M | $1,901 | 4bd 4ba 3,735sf | 0.66 mi | similar size | ||
| 18 Ford St | 2026-09-28 | $4.34M | No asking price | — | $4.34M | $1,835 | 3bd 2ba 2,365sf | 0.50 mi | recent | ||
| 4333 23rd St | 2026-04-08 | $3.2M | $2,495,000 | $705,000 above asking (28.3%) | $3.28M | $1,329 | 3bd 3ba 2,467sf | 0.35 mi | |||
| 3961 25th St | 2026-05-26 | $5.8M | $5,495,000 | $305,000 above asking (5.6%) | $6M | $2,114 | 4bd 4ba 2,838sf | 0.74 mi | |||
| 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 | 0.30 mi | same street | ||
| 268 Grand View Ave | 2026-04-07 | $4.2M | Unclear | — | $4.3M | $1,263 | 4bd 4ba 3,407sf | 0.28 mi | |||
| 1525 Cole St | 2026-06-23 | $3.5M | Unclear | — | $3.63M | $1,451 | 4bd 2ba 2,500sf | 0.62 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 | 0.27 mi | |||
| 3828 23rd Street | 2026-09-10 | $1.85M | $1,699,000 | $151,000 above asking (8.9%) | $1.85M | $851 | 4bd 3ba 2,173sf | 0.62 mi | recent | ||
| 63 Carmel St | 2025-12-22 | $9.35M | $8,995,000 | $355,000 above asking (3.9%) | $11.06M | $2,082 | 4bd 7ba 5,314sf | 0.58 mi | |||
| 132 Corbett Ave | 2026-05-21 | $3.2M | $2,495,000 | $705,000 above asking (28.3%) | $3.31M | $1,571 | 4bd 3ba 2,107sf | 0.35 mi | |||
| 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 | 0.39 mi | |||
| 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 | 0.41 mi | |||
| 1012 14th St | 2026-10-13 | $3.2M | $1,995,000 | $1,205,000 above asking (60.4%) | $3.07M | $1,383 | 3bd 4ba 2,217sf | 0.72 mi | recent | ||
| 4403 24th St | 2026-05-13 | $2.85M | $2,150,000 | $705,000 above asking (32.8%) | $2.95M | $1,369 | 3bd 3ba 2,157sf | 0.47 mi | |||
| 4532 17th St | 2026-06-12 | $3.35M | $2,995,000 cut from $3.69M | $355,000 above asking (11.9%) | $3.47M | $1,163 | 3bd 3ba 2,985sf | 0.53 mi | |||
| 438 Elizabeth St | 2026-08-28 | $4.93M | $3,295,000 | $1,635,000 above asking (49.6%) | $5.21M | $2,489 | 3bd 3ba 2,092sf | 0.53 mi | recent | ||
| 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 | 0.34 mi | |||
| 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 | 0.37 mi | |||
| 1278 Clayton St | 2025-12-09 | $3.5M | No asking price | — | $4.14M | $1,762 | 3bd 4ba 2,350sf | 0.48 mi | |||
| 685 Corbett Ave | 2026-05-27 | $1.96M | $1,745,000 | $210,000 above asking (12.0%) | $2.02M | $967 | 3bd 3ba 2,092sf | 0.27 mi | |||
| 1391 Clayton St | 2026-10-09 | $4.79M | $3,995,000 | $795,000 above asking (19.9%) | $4.59M | $1,739 | 4bd 5ba 2,640sf | 0.46 mi | recent | ||
| 4356 25th St | 2026-06-03 | $4.8M | $3,500,000 | $1,300,000 above asking (37.1%) | $4.97M | $1,959 | 3bd 3ba 2,540sf | 0.53 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 | 0.50 mi | same street | ||
| 4335 Cesar Chavez St | 2025-11-04 | $3.71M | $3,495,000 | $210,000 above asking (6.0%) | $4.32M | $1,684 | 4bd 4ba 2,563sf | 0.71 mi | |||
| 3879 23rd St | 2025-10-27 | $3.2M | $2,295,000 | $905,000 above asking (39.4%) | $3.66M | $1,645 | 4bd 4ba 2,225sf | 0.57 mi | |||
| 35 Hattie Street | 2025-11-25 | $2.13M | $2,190,000 cut from $2.9M | $63,400 below asking (2.9%) | $2.48M | $984 | 5bd 5ba 2,518sf | 0.30 mi | |||
| 621 Sanchez St | 2025-11-05 | $2.9M | No asking price | — | $3.38M | $1,409 | 4bd 3ba 2,400sf | 0.47 mi |