Middlesex County and Waltham City property record for 27 Brennan Ave, Waltham, MA 02451
| Property Type | Single Family Home |
|---|---|
| Details | 1 bd · 1 ba · 1,067 sqft · built 1977 |
| Lot Size | 0.447 acres (19,480 sqft) |
| Owner | Individual Name on File |
| Last Sale | $240,000 (May 1999) |
| Tax Bill | $8,457 (2026) |
| Flood Zone | Zone X (minimal risk) |
| APN | 13773 |
| Primary APN | 13773 |
|---|---|
| Alternative APN |
|
| Bedrooms | 1 Bed |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 4 Rooms |
| Stories | 1 Story |
| Building Area | 1,067 sqft Living Area |
| Gross Area | 2,739 sqft |
| Basement Area | 837 sqft |
| Unfinished Basement | 837 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1977 |
|---|---|
| Effective Year Built | Effective 1977 |
| Architectural Style | Ranch |
| Exterior Material | Wood Siding |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 19,480 sqft (0.447 acres) |
| Heating System | Hot Water |
|---|---|
| Heating Fuel | Oil |
| Account Number | 13773 |
|---|---|
| Street Address | 27 BRENNAN AVE |
| City | WALTHAM |
| State | MA |
| Zip | 02451-1304 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | 1 |
| Legal Block | 5 |
| Legal Lot Number | 13 |
| Jurisdiction | WALTHAM MA |
| Township / Civil Division | WALTHAM |
| Census Block Group | 2 |
| Census Block | 2001 |
| Census Tract | 368102 |
27 Brennan Ave is owned and occupied by an individual who bought it in May 1999.
Source: Middlesex County and Waltham City records, as of October 20, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 27 BRENNAN AVE, WALTHAM, MA 02451-1304 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Last Sale | May 27, 1999 · Amount on File |
| Deed Sale | May 27, 1999 · Amount on File |
| Record Updated | Oct 29, 2026 |
The 2026 property tax bill for 27 Brennan Ave was $8,457, up 10.2% from the year before.
Source: Middlesex County and Waltham City assessment roll, as of April 14, 2026
| Type | Name |
|---|---|
| State | Massachusetts |
| County | Middlesex County |
| Municipality | Waltham City |
| Unified School District | Waltham School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $8,457.00 (+10.25%) | $819,500 (+4.9%) Land $585,800 Building $233,700 | $776,103 (+1.25%) |
| 2025 | $7,671.00 (+5.56%) | $781,200 (+3.63%) Land $559,100 Building $222,100 | $766,555 (+8.79%) |
| 2024 | $7,267.00 (+1.48%) | $753,800 (+8.63%) Land $534,400 Building $219,400 | $704,615 |
| 2023 | $7,161.00 | $693,900 Land $484,900 Building $209,000 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 27 Brennan Ave in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1978.
Source: FEMA National Flood Hazard Layer, effective September 10, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 8 in force |
| Nearby Flood Claims | 1 (1978) |
| Most Recent Claim | Feb 1978 · tidal / storm surge |
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Wildfire risk around 27 Brennan Ave is low, with a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 80% of the US · above 57% of Massachusetts |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | None beyond ember reach |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | WALTHAM WATER DEPARTMENT serves 65,218 people · EPA ID MA3308000 |
|---|---|
| Water Source | Purchased surface water from MWRA |
| Last State Inspection | Jun 2024 |
| Lead | 2 ppb (2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 1 last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.
Source: FCC Broadband Data Collection, based on 192 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 2,000 |
| Astound Broadband Cable | 1,500 / 50 |
| Verizon Fiber · Fixed Wireless in parts of the area | 980 / 880 |
May also be available: T-Mobile.
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