Forecaster 121
Downtown, Boston · 121 Portland St
Forecaster 121 in Downtown, Boston has 95 recorded condominium sales dating back to 2017, a median sale price of $809K and an average of $980 per square foot. Every figure below is drawn from recorded deeds — not listings, not estimates.
Forecaster 121 is one of 15 condo buildings CURVE covers in Downtown, where the median recorded price is $1,026 per square foot. By that measure it ranks #9 of 15 in the neighborhood.
The record
Sales activity
Recorded sales by year
Every deed recorded in Forecaster 121, by year, with that year's median price.
Sales by price point
How 95 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 |
|---|---|---|---|---|---|---|
| 808 | 3/18/2026 | 1 Bed | Developer Sale | $500K | $548 | — |
| 605 | 1/5/2026 | 1 Bed | Resale 1 | $530K | $1,100 | +4% |
| 1003 | 11/5/2025 | 1 Bed | Resale 1 | $940K | $1,043 | -22% |
| 801 | 8/11/2025 | 2 Beds | Resale 1 | $900K | $726 | -35% |
| 611 | 5/15/2025 | 1 Bed | Developer Sale | $805K | $904 | — |
| 507 | 4/23/2025 | 2 Beds | Resale 1 | $835K | $876 | -4% |
| 411 | 3/24/2025 | 1 Bed | Developer Sale | $785K | $844 | — |
| 511 | 6/20/2023 | 1 Bed | Developer Sale | $825K | $891 | — |
| 206 | 5/17/2023 | 2 Beds | Resale 1 | $1.2M | $1,068 | -5% |
| 302 | 5/3/2023 | 1 Bed | Developer Sale | $940K | $998 | — |
The full Forecaster 121 record
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More buildings in Downtown
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 Forecaster 121?
95 recorded sales, going back to 2017, of which 18 are resales. This page shows the 10 most recent; members see all of them.
What has Forecaster 121 done over time?
Resales in the building have changed hands at an average of -2.6% against their prior recorded price, after an average hold of 4.4 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.