Middlesex County and Lexington Town property record for 21 Byron Ave, Lexington, MA 02420
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 2 ba · 1,476 sqft · built 1930 |
| Lot Size | 0.132 acres (5,750 sqft) |
| Owner | Individual Name on File |
| Last Sale | $494,000 (Jan 2007) |
| Tax Bill | $12,482 (2026) |
| Deeds & Mortgages | Jun 2026 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | LEXI M:0030 L:000028 |
| Primary APN | LEXI M:0030 L:000028 |
|---|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 2 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 7 Rooms |
| Stories | 2 Stories |
| Building Area | 1,476 sqft Living Area |
| Gross Area | 2,924 sqft |
| 1st Floor Area | 1,008 sqft |
| Basement Area | 1,008 sqft |
| Unfinished Basement | 1,008 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1930 |
|---|---|
| Effective Year Built | Effective 1930 |
| Architectural Style | Conventional |
| Exterior Material | Wood Siding |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 5,750 sqft (0.132 acres) |
| Heating System | Hot Water |
|---|---|
| Heating Fuel | Oil |
| Street Address | 21 BYRON AVE |
|---|---|
| City | LEXINGTON |
| State | MA |
| Zip | 02420-3815 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | RS |
| Legal Lot Number | 28 |
| Jurisdiction | LEXINGTON MA |
| Township / Civil Division | LEXINGTON |
| Census Block Group | 2 |
| Census Block | 2017 |
| Census Tract | 358400 |
21 Byron Ave is owned and occupied by an individual who bought it in January 2007.
Source: Middlesex County and Lexington Town records, as of October 20, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 21 BYRON AVE, LEXINGTON, MA 02420-3815 |
| 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 | Jan 19, 2007 · Amount on File |
| Deed Sale | Jan 19, 2007 · Amount on File |
| Prior Sale | Dec 10, 2001 · Amount on File |
| Deed Book / Page | 1332 / 57 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | LEXINGTON MA |
| Recording Date | Jun 25, 2026 |
| Property Address | 21 BYRON AVE, LEXINGTON, MA 02420-3815 |
| Document Number | 0002002467 |
| Instrument Date | Jun 24, 2026 |
| Instrument | 20262002467 |
| Transaction Type | Mortgage |
| Record Updated | Jul 15, 2026 |
| Name | Verified Name |
|---|---|
| Address | 21 BYRON AVE, LEXINGTON, MA 02420-3815 |
| Document Number | 0002002467, |
|---|---|
| Date | Jun 25, 2026 |
| Instrument | 20262002467 |
| Amount | Amount on Record |
|---|---|
| Term | 360 Months |
| Rate | 6.53% |
|---|---|
| Max Rate | -1% |
The 2026 property tax bill for 21 Byron Ave was $12,482, up 3.7% from the year before.
Source: Middlesex County and Lexington Town assessment roll, as of April 14, 2026
| Type | Name |
|---|---|
| State | Massachusetts |
| County | Middlesex County |
| County Subdivision | Lexington Town |
| Unified School District | Lexington School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $12,482.00 (+3.72%) | $1,014,000 (+3.05%) Land $644,000 Building $370,000 | $900,885 (-) |
| 2025 | $12,034.00 (+5.86%) | $984,000 (+6.03%) Land $614,000 Building $370,000 | $900,885 (+2.33%) |
| 2024 | $11,368.00 (+2.64%) | $928,000 (+8.92%) Land $585,000 Building $343,000 | $880,365 |
| 2023 | $11,076.00 | $852,000 Land $531,000 Building $321,000 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 21 Byron Ave in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1996.
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 | 5 in force |
| Nearby Flood Claims | 1 (1996) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Oct 1996 · Extreme Weather Conditons And Flooding |
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 21 Byron Ave is low, with less than 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 96% of the US · lower than 92% of Massachusetts |
|---|---|
| Wildfire Likelihood | Under 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 | LEXINGTON WATER DEPT. (MWRA) serves 34,074 people · EPA ID MA3155000 |
|---|---|
| Water Source | Purchased surface water from MWRA |
| Last State Inspection | Sep 2023 |
| Lead | 2 ppb (2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 2 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. This system sells water to local utilities; the supplier billing this address may be one of them.
Source: FCC Broadband Data Collection, based on 202 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Verizon Fiber | 2,300 / 2,300 |
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Cable | 1,500 / 50 |
| T-Mobile Fixed Wireless | 100 / 20 |
5G (outdoors only) and 4G LTE
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