109 Prospect Street
Somerville, Boston · 109 Prospect Street
109 Prospect Street in Somerville, Boston has 17 recorded condominium sales dating back to 2022, a median sale price of $890K and an average of $889 per square foot. Every figure below is drawn from recorded deeds — not listings, not estimates.
109 Prospect Street is one of 41 condo buildings CURVE covers in Somerville, where the median recorded price is $467 per square foot. By that measure it ranks #1 of 41 in the neighborhood.
The record
Sales activity
Recorded sales by year
Every deed recorded in 109 Prospect Street, by year, with that year's median price.
Sales by price point
How 17 recorded sales distribute across the price ladder.
10 most recent sales
| Unit | Date | Beds | Type | Price | $/SF | Change |
|---|---|---|---|---|---|---|
| 205 | 6/3/2026 | — | Resale 1 | $1.1M | $932 | +4% |
| 205 | 7/3/2023 | — | Developer Sale | $1.1M | $898 | — |
| 102 | 6/22/2023 | — | Developer Sale | $675K | $910 | — |
| 302 | 6/12/2023 | — | Resale 1 | $770K | $1,038 | -7% |
| 203 | 5/16/2023 | — | Developer Sale | $890K | $945 | — |
| 204 | 5/4/2023 | — | Developer Sale | $945K | $938 | — |
| 104 | 4/24/2023 | — | Developer Sale | $735K | $950 | — |
| 105 | 4/13/2023 | — | Developer Sale | $950K | $924 | — |
| 304 | 2/28/2023 | — | Developer Sale | $195K | $184 | — |
| 201 | 1/27/2023 | — | Developer Sale | $277K | $298 | — |
The full 109 Prospect Street 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 109 Prospect Street?
17 recorded sales, going back to 2022, of which 2 are resales. This page shows the 10 most recent; members see all of them.
What has 109 Prospect Street done over time?
Resales in the building have changed hands at an average of -1.4% against their prior recorded price, after an average hold of 1.9 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.