81 Waltham Street
South End, Boston · 81 Waltham ST · Deed-verified
81 Waltham Street in South End, Boston has 16 recorded condominium sales dating back to 2000. Over the last five years, its median sale price is $1.1M and its median price per square foot is $1,513. Every figure below is drawn from recorded deeds — not listings, not estimates.
81 Waltham Street is one of 864 condo buildings CURVE covers in South End, where the median building recorded $1,151 per square foot over the last five years. By that measure it ranks #11 of 177 in the neighborhood.
The record
Sales activity
Recorded sales by year
Every deed recorded in 81 Waltham Street, by year, with that year's median price.
Sales by price point
How 16 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 |
|---|---|---|---|---|---|---|
| 3 | 7/31/2026 | 2 Beds | Resale 4 | $1.1M | $1,640/SF | vs prior sale +19% |
| 6 | 11/18/2025 | 2 Beds | Resale 3 | $1.3M | $1,513/SF | vs prior sale +28% |
| 4 | 11/23/2021 | 1 Bed | Resale 2 | $823K | $1,200/SF | vs prior sale +12% |
| 2 | 8/10/2021 | 1 Bed | Developer Sale | $650K | $970/SF | — |
| 3 | 6/24/2021 | 2 Beds | Resale 3 | $930K | $1,374/SF | vs prior sale +13% |
| 6 | 3/2/2021 | 2 Beds | Resale 2 | $980K | $1,186/SF | vs prior sale +27% |
| 4 | 2/7/2019 | 1 Bed | Resale 1 | $735K | $1,071/SF | vs prior sale +90% |
| 3 | 10/30/2017 | 2 Beds | Resale 2 | $820K | $1,211/SF | vs prior sale +113% |
| 1 | 3/31/2016 | 1 Bed | Resale 1 | $548K | $747/SF | vs prior sale +69% |
| 6 | 5/8/2015 | 2 Beds | Resale 1 | $773K | $936/SF | vs prior sale +39% |
The full 81 Waltham Street record
You are seeing the summary. Members see the deeds.
- All 16 recorded sales
- Every unit's resale chain
- Buyer & seller names
- Financing & deed citations
- Condo docs + AI
- Client-ready reports
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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 81 Waltham Street?
16 recorded sales, going back to 2000, of which 10 are resales. This page shows the 10 most recent; members see all of them.
What has 81 Waltham Street done over time?
Resales in the building have changed hands at an average of +44.0% against their prior recorded price, after an average hold of 6.5 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.