Watertown, Massachusetts
Watertown Condo Buildings: Sales & Prices by Building
Watertown's larger condo buildings — the mid-rise communities along Coolidge Avenue, the river, and Watertown Square — each trade a little differently. This page tracks them building by building from recorded deeds: how many units, how often they sell, and what they've been selling for. Click any building for its full sale history.
Source: Watertown assessor & registry of deeds records, through June 12, 2026. Family transfers and other non-market sales are excluded.
The buildings, at a glance
32 Whites Ave
- Units
- 137
- Sales, last 5 years
- 29
- Median price, last 24 mo
- $483,500
- Latest sale
- December 9, 2025
Hamilton Place specialist page
125 Coolidge Ave
- Units
- 84
- Sales, last 5 years
- 15
- Median price, last 24 mo
- $700,000
- Latest sale
- November 21, 2025
Full sale history
10 Williams St
- Units
- 74
- Sales, last 5 years
- 19
- Median price, last 24 mo
- $417,000
- Latest sale
- June 8, 2026
Full sale history
50 Watertown St
- Units
- 71
- Sales, last 5 years
- 15
- Median price, last 24 mo
- $592,500
- Latest sale
- April 17, 2026
Full sale history
151 Coolidge Ave
- Units
- 68
- Sales, last 5 years
- 7
- Median price, last 24 mo
- $651,500
- Latest sale
- October 18, 2024
Full sale history
141 Coolidge Ave
- Units
- 66
- Sales, last 5 years
- 16
- Median price, last 24 mo
- $561,800
- Latest sale
- July 17, 2025
Full sale history
199 Coolidge Ave
- Units
- 66
- Sales, last 5 years
- 17
- Median price, last 24 mo
- $782,500
- Latest sale
- April 30, 2026
Full sale history
Why building-level data matters
Town-wide condo statistics blur together buildings that have very little in common. A 1980s mid-rise on Coolidge Avenue with deeded parking and river views prices nothing like a triple-decker condo conversion near the square — yet both land in the same "Watertown condo median." The only honest comp for a unit in one of these buildings is another sale in the same building.
That's why I track these communities sale by sale. Within a single building, price differences come down to floor, exposure, parking, and condition — variables you can actually adjust for. If you own in one of these buildings, the sale history behind each link above is the starting point for what your unit is worth today.
Own a condo in one of these buildings?
I'll build your valuation from your building's actual closed sales — adjusted for floor, parking, and condition — and send it over free, with no pressure to list.