99 Coolidge Av, Watertown — property record card
IMPUTED - Research and Development facilities built in 2021 on 6.33 acres in Watertown, assessed at $185,879,000 for fiscal year 2026; last sold for $9,799,750 on July 3, 2020.
Rebuilt from the Watertown assessor file as published by MassGIS — not the official card. For the official card, with owner, photo and sketch, ask the Watertown assessor’s office.
Parcel
| Location | 99 Coolidge Av |
|---|
| Map and parcel ID | 1401 3B A |
|---|
| Use | IMPUTED - Research and Development facilities (use code 404C) |
|---|
| County | Middlesex |
|---|
Valuation — fiscal year 2026
| Building | $140,761,500 |
|---|
| Land | $30,835,700 |
|---|
| Other | $14,281,800 |
|---|
| Total assessed | $185,879,000 |
|---|
Land
| Lot size | 6.33 acres (275,926 ft²) |
|---|
Building
| Year built | 2021 |
|---|
| Style | Research/Devel |
|---|
| Living area | 268,303 ft² |
|---|
| Stories | 5 |
|---|
Last recorded sale
| Price | $9,799,750 |
|---|
| Date | July 3, 2020 |
|---|
| Deed | Registry of Deeds book 75038, page 423 |
|---|
What MassDEP has recorded
- RTN 3-0036538 — Mount Auburn Club, activity and use limitation, status PSC, class PA, AUL recorded November 4, 2024 · MassDEP file
Within about 500 m (a third of a mile): 1 active tier-classified 21E site and 5 sites with an Activity and Use Limitation. All MassDEP sites in Watertown.
What this means
- An Activity and Use Limitation is a deed restriction: it limits how the land may be used (often no residential use or no digging) and passes to every buyer.
Point at the centre of the assessor parcel — not a survey.
Data: Watertown assessor file for fiscal year 2026, via MassGIS, retrieved October 30, 2026; MassDEP sites retrieved the same day. Sources and freshness. No owner names are published.

The report for 99 Coolidge Av
This page shows the assessor record and the MassDEP sites on the parcel. The report adds what lies around it: FEMA flood zone, wetlands, Zone II and other water supply protection areas, priority habitat, sewer or septic service, protected open space, and every 21E site within half a mile.
$19card · PDF within 24 h · you pay after receiving itSee the sample (PDF)
Order the report