Home › Castro/Upper Market › 21st St
4124 21st St
Single-family home, 1 ba, 855 sqft, built 1910
Today’s estimate uses 855 sqft and the home’s latest facts. It does not estimate the home’s value at a past sale date.
56 sales inside 0.75 mi since May 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
Low confidence
$1,735,000
$1,128,000estimated range$2,342,000
From 56 comps at a weighted median of $2,029 per sqft.
- Block
- 2750
- Lot
- 018
- Sales
- Oct 2025 to Oct 2026
- Prices adjusted to
- 2026-11-01
- Within
- 0.75 mi
- Sold since
- May 2025
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I'm interestedSale prices versus asking
Similarity-weighted median: 40.4% above final asking.
Middle half: 22.2% above asking to 45.0% above asking.
35 of 56 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 (56)
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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 4216 22nd St | 2026-05-06 | $2.8M | $1,995,000 | $805,000 above asking (40.4%) | $2.9M | $3,292 | 3bd 2ba 880sf | 0.16 mi | similar size | ||
| 60 Eagle St | 2026-10-16 | $1.81M | $1,049,000 | $761,000 above asking (72.5%) | $1.73M | $1,742 | 1bd 1ba 996sf | 0.36 mi | recent | ||
| 501 Corbett Ave | 2026-05-12 | $950K | No asking price | — | $983K | $1,202 | 1bd 1ba 818sf | 0.42 mi | similar size | ||
| 541 Diamond St | 2026-05-22 | $3.05M | $2,495,000 | $555,000 above asking (22.2%) | $3.16M | $2,869 | 2bd 2ba 1,100sf | 0.17 mi | |||
| 3623 22nd St | 2026-05-06 | $1.1M | $995,000 | $105,000 above asking (10.6%) | $1.14M | $1,453 | 2bd 1ba 783sf | 0.50 mi | similar size | ||
| 447 Hoffman Ave | 2025-10-27 | $1.45M | $1,500,000 | $50,000 below asking (3.3%) | $1.66M | $1,895 | 2bd 1ba 875sf | 0.45 mi | similar size | ||
| 1279 Church St | 2026-06-01 | $2.55M | $1,795,000 | $755,000 above asking (42.1%) | $2.64M | $2,930 | 3bd 2ba 902sf | 0.68 mi | similar size | ||
| 188 Corbett Ave | 2026-08-14 | $852K | No asking price | — | $900K | $952 | 2bd 1ba 945sf | 0.49 mi | recent | ||
| 145 Grand View Ave | 2026-07-17 | $3.1M | No asking price | — | $3.3M | $2,795 | 1ba 1,180sf | 0.14 mi | |||
| 4555 19th St | 2026-06-18 | $1.85M | No asking price | — | $1.92M | $1,679 | 2bd 1ba 1,142sf | 0.24 mi | |||
| 4443 25th St | 2026-07-10 | $1.45M | No asking price | — | $1.54M | $1,505 | 2bd 1ba 1,025sf | 0.49 mi | |||
| 203 Hoffman Ave | 2026-06-23 | $2.61M | $1,499,000 | $1,111,000 above asking (74.1%) | $2.7M | $2,352 | 3bd 1ba 1,150sf | 0.32 mi | |||
| 4229 21st St | 2025-11-20 | $1.7M | $1,325,000 | $375,000 above asking (28.3%) | $1.98M | $3,168 | 2bd 1ba 625sf | 0.08 mi | same street | ||
| 4106 20th St | 2025-12-03 | $2.6M | $2,125,000 | $475,000 above asking (22.4%) | $3.08M | $2,930 | 4bd 3ba 1,050sf | 0.27 mi | |||
| 4458 24th St | 2026-03-10 | $2.17M | $1,495,000 | $673,000 above asking (45.0%) | $2.25M | $2,485 | 2bd 1ba 906sf | 0.44 mi | similar size | ||
| 343 Cumberland St | 2026-09-03 | $3.17M | $1,995,000 | $1,180,000 above asking (59.1%) | $3.17M | $2,573 | 3bd 2ba 1,234sf | 0.36 mi | recent | ||
| 1040 Sanchez St | 2026-06-08 | $2.48M | No asking price | — | $2.58M | $2,385 | 3bd 2ba 1,080sf | 0.47 mi | |||
| 276 Grand View Ave | 2026-05-22 | $2.8M | $2,800,000 | At asking | $2.9M | $2,414 | 4bd 4ba 1,200sf | 0.29 mi | |||
| 894 Burnett Ave | 2026-07-28 | $1M | No asking price | — | $1.06M | $1,198 | 1bd 1ba 888sf | 0.68 mi | similar size | ||
| 311 Cumberland St | 2026-07-15 | $1.92M | No asking price | — | $2.04M | $1,743 | 2bd 2ba 1,172sf | 0.39 mi | |||
| 327 Caselli Ave | 2026-02-12 | $1.9M | $1,495,000 | $405,000 above asking (27.1%) | $2.03M | $1,872 | 2bd 2ba 1,085sf | 0.41 mi | |||
| 3906 23rd St | 2026-05-11 | $2.5M | $1,295,000 | $1,205,000 above asking (93.1%) | $2.59M | $2,273 | 2bd 1ba 1,138sf | 0.44 mi | |||
| 4368 23rd St | 2026-02-06 | $1.72M | $1,550,000 | $170,000 above asking (11.0%) | $1.84M | $1,603 | 4bd 1ba 1,147sf | 0.28 mi | |||
| 1008 Castro St | 2026-04-01 | $2.2M | $1,795,000 | $405,000 above asking (22.6%) | $2.25M | $1,957 | 2bd 1ba 1,152sf | 0.24 mi | |||
| 543 Jersey St | 2026-04-16 | $2.48M | $1,495,000 | $980,000 above asking (65.6%) | $2.54M | $2,161 | 3bd 1ba 1,174sf | 0.42 mi | |||
| 1037 14th St | 2026-03-31 | $1.4M | No asking price | — | $1.45M | $1,464 | 2bd 1ba 993sf | 0.75 mi | |||
| 1604 Castro St | 2026-08-13 | $2.86M | $1,995,000 | $865,008 above asking (43.4%) | $3.02M | $2,576 | 2bd 1ba 1,173sf | 0.54 mi | recent | ||
| 27 Homestead St | 2026-03-23 | $1.65M | No asking price | — | $1.71M | $1,452 | 3bd 1ba 1,180sf | 0.41 mi | |||
| 114 Fair Oaks St | 2026-06-05 | $290K | No asking price | — | $301K | $285 | 2bd 1ba 1,054sf | 0.70 mi | |||
| 646 Duncan St | 2026-09-30 | $2.4M | No asking price | — | $2.4M | $2,226 | 2bd 2ba 1,078sf | 0.73 mi | recent | ||
| 4 Ord Ct | 2026-03-13 | $1.7M | $1,750,000 | $50,000 below asking (2.9%) | $1.77M | $1,509 | 2bd 2ba 1,170sf | 0.53 mi | |||
| 761 Noe St | 2026-03-27 | $1.52M | $1,595,000 cut from $1.65M | $70,000 below asking (4.4%) | $1.58M | $1,263 | 2bd 1ba 1,254sf | 0.28 mi | |||
| 4363 26th St | 2026-03-16 | $8M | No asking price | — | $8.31M | $7,384 | 2bd 1ba 1,125sf | 0.59 mi | |||
| 701 Castro St | 2026-04-21 | $4.29M | No asking price | — | $4.4M | $3,026 | 2ba 1,453sf | 0.19 mi | |||
| 278 Eureka St | 2026-01-02 | $2.52M | No asking price | — | $2.94M | $2,029 | 3bd 1ba 1,450sf | 0.13 mi | |||
| 734 Elizabeth St | 2025-11-07 | $1.57M | $1,450,000 | $120,000 above asking (8.3%) | $1.83M | $1,404 | 3bd 1ba 1,302sf | 0.28 mi | |||
| 4789 19th St | 2026-05-29 | $2.52M | $1,995,000 | $530,000 above asking (26.6%) | $2.61M | $1,786 | 2bd 2ba 1,463sf | 0.38 mi | |||
| 473 Corbett Ave | 2026-05-04 | $1.5M | $1,345,000 | $155,000 above asking (11.5%) | $1.55M | $1,268 | 3bd 2ba 1,224sf | 0.45 mi | |||
| 465 Liberty St | 2025-12-22 | $1.81M | $1,388,000 | $419,000 above asking (30.2%) | $2.14M | $1,665 | 2bd 2ba 1,284sf | 0.31 mi | |||
| 724 27th St | 2025-10-27 | $1.99M | $1,550,000 | $442,000 above asking (28.5%) | $2.28M | $2,278 | 2bd 1ba 1,000sf | 0.67 mi | |||
| 4245 25th St | 2026-05-01 | $2.35M | $1,895,000 | $455,000 above asking (24.0%) | $2.43M | $1,707 | 3bd 2ba 1,424sf | 0.48 mi | |||
| 29 Newburg St | 2026-09-25 | $3M | No asking price | — | $3M | $2,405 | 3bd 2ba 1,248sf | 0.72 mi | recent | ||
| 4031 22nd St | 2025-10-31 | $2.53M | $1,495,000 | $1,038,000 above asking (69.4%) | $2.9M | $1,893 | 2bd 2ba 1,530sf | 0.13 mi | |||
| 4268 26th St | 2026-03-30 | $8.6M | No asking price | — | $8.93M | $6,444 | 3bd 2ba 1,385sf | 0.56 mi | |||
| 665 27th St | 2026-04-02 | $2.44M | $1,388,000 | $1,053,067 above asking (75.9%) | $2.5M | $2,129 | 2bd 1ba 1,175sf | 0.70 mi | |||
| 1116 Diamond St | 2026-04-20 | $2.35M | $1,895,000 | $455,000 above asking (24.0%) | $2.41M | $1,619 | 3bd 2ba 1,488sf | 0.54 mi | |||
| 4149 26th St | 2026-03-27 | $2.15M | $1,895,000 | $255,000 above asking (13.5%) | $2.23M | $1,588 | 3bd 3ba 1,406sf | 0.62 mi | |||
| 560 Duncan St | 2026-05-08 | $2.2M | No asking price | — | $2.28M | $1,897 | 2bd 1ba 1,200sf | 0.75 mi | |||
| 4279 Cesar Chavez St | 2025-12-24 | $1.57M | No asking price | — | $1.85M | $1,531 | 3bd 1ba 1,210sf | 0.64 mi | |||
| 408 Roosevelt Way | 2026-06-10 | $3.48M | $2,098,000 | $1,377,000 above asking (65.6%) | $3.6M | $2,391 | 3bd 3ba 1,506sf | 0.68 mi | |||
| 67 Clairview Ct | 2026-05-20 | $3.5M | No asking price | — | $3.62M | $2,842 | 2ba 1,274sf | 0.71 mi | |||
| 11 Marview Way | 2026-05-15 | $2M | $1,388,000 | $617,000 above asking (44.5%) | $2.07M | $1,631 | 3bd 2ba 1,272sf | 0.75 mi | |||
| 3775 16th St | 2025-10-29 | $2.42M | $1,995,000 | $425,000 above asking (21.3%) | $2.77M | $2,137 | 4bd 2ba 1,295sf | 0.53 mi | |||
| 4047 Cesar Chavez St | 2025-11-04 | $2.05M | $1,899,000 | $151,000 above asking (8.0%) | $2.39M | $1,705 | 2bd 1ba 1,400sf | 0.72 mi | |||
| 18 Portola Dr | 2026-04-20 | $2M | No asking price | — | $2.05M | $1,357 | 4bd 2ba 1,511sf | 0.55 mi | |||
| 38 Newburg St | 2025-12-03 | $2.4M | $1,895,000 | $505,000 above asking (26.6%) | $2.84M | $2,104 | 3bd 2ba 1,350sf | 0.71 mi |