21 Beacon
Beacon Hill, Boston · 19-23 Beacon St
21 Beacon in Beacon Hill, Boston has 317 recorded condominium sales dating back to 1986, a median sale price of $274K and an average of $622 per square foot. Every figure below is drawn from recorded deeds — not listings, not estimates.
21 Beacon is one of 222 condo buildings CURVE covers in Beacon Hill, where the median recorded price is $807 per square foot. By that measure it ranks #216 of 222 in the neighborhood.
The record
Sales activity
Recorded sales by year
Every deed recorded in 21 Beacon, by year, with that year's median price.
Sales by price point
How 317 recorded sales distribute across the price ladder.
Unit mix sold
Bedroom count across recorded sales.
10 most recent sales
| Unit | Date | Beds | Type | Price | $/SF | Change |
|---|---|---|---|---|---|---|
| 4G | 9/22/2026 | 1 Bed | Resale 1 | $533K | $996 | +122% |
| 11L | 9/14/2026 | 1 Bed | Resale 2 | $508K | $1,562 | +8% |
| 8G | 9/3/2026 | 1 Bed | Resale 4 | $619K | $1,157 | -4% |
| 2J | 8/14/2026 | 1 Bed | Resale 2 | $565K | $961 | +13% |
| 7M | 7/20/2026 | 1 Bed | Resale 2 | $525K | $1,284 | +98% |
| 5I | 3/31/2026 | 1 Bed | Resale 2 | $583K | $1,016 | +74% |
| 6K | 2/12/2026 | 1 Bed | Resale 3 | $450K | $1,718 | +0% |
| 4S | 12/23/2025 | 1 Bed | Resale 3 | $540K | $1,063 | +93% |
| 7E | 10/30/2025 | 1 Bed | Resale 4 | $715K | $1,391 | -1% |
| 4I | 6/26/2025 | 1 Bed | Resale 2 | $800K | $1,394 | +43% |
The full 21 Beacon record
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About this record
Where does this data come from?
Every sale shown is a deed recorded with the Boston registry — the legal record of the transaction, not a listing or an estimate. CURVE assembles, verifies and reconciles each one to the building and the unit.
How many sales are in 21 Beacon?
317 recorded sales, going back to 1986, of which 192 are resales. This page shows the 10 most recent; members see all of them.
What has 21 Beacon done over time?
Resales in the building have changed hands at an average of +93.0% against their prior recorded price, after an average hold of 7.6 years.
What do members see that I don't?
The complete sales table, each unit's full chain of title, buyer and seller names, financing detail, the deed book and page behind every figure, the condo documents, and reports you can send to a client.