Lexington, MA
Middlesex County42.4473°N, 71.2245°W
Tracking 12,790 properties across Lexington, Massachusetts — a community where the median home dates to 1961 and the oldest to 1668. Every parcel mapped with building characteristics, environmental exposure, hazard risk, and ownership history assembled from 140+ sources.
12,790
Properties Tracked
1961
Median Year Built
$1.2M
Median Assessed Value
2%
FEMA Flood Zone
3.59M
NEP Data Facts Tracked
Zone 1
Radon Zone
Click any parcel to view intelligence
Lexington, MAInc. 1640
Lexington's place in American history — the Battle of Lexington Green on April 19, 1775 was the opening engagement of the Revolutionary War — is matched by its position as one of the most desirable residential communities in Greater Boston. The town's housing stock reflects over 300 years of development, from colonial-era homes along Massachusetts Avenue to the extensive post-war subdivisions that filled in the town's farmland during the 1950s-70s.
The town's proximity to Route 128, its nationally ranked school system, and its historic character create sustained demand that keeps assessed values among the highest in Middlesex County. For property professionals, Lexington is a high-value market where building condition and renovation history are critical variables — a well-maintained 1955 ranch and one with original systems represent very different risk and value profiles, even if they sit on the same street. The town's historic districts add preservation considerations that affect renovation decisions and insurance.
Risk Profile
FEMA flood zones, fire protection grades, radon — parcel by parcel
FEMA Flood Zones
307 properties (2%) are in FEMA Special Flood Hazard Areas, where flood insurance is required for federally-backed mortgages.
X
12,483
A
226
AE
81
Fire Protection Grades
Fire protection grades reflect proximity to fire stations and hydrant infrastructure. Grade affects insurance pricing in every New England state.
Grade A
1,440
Grade B
7,403
Grade C
3,941
Grade D
6
Zone 1
Radon Risk
123 mph
Design Wind Speed
ASCE 7 standard
40 psf
Ground Snow Load
ASCE 7 standard
Relatively Low
FEMA Risk Index
NRI composite rating
The Property Landscape
12,790 properties · Median year built 1961 · Avg 1,928 sf
Property Types
Single Family
9,092
Institutional
1,341
Two-Family
1,145
Vacant Land
468
Commercial
418
Multi-Family
202
Industrial
48
Residential Other
41
Other
21
Mixed Use
12
Construction by Era
Pre-1800
70
1800-1849
124
1850-1899
439
1900-1949
2,409
1950-1979
4,693
1980-1999
1,242
2000+
2,125
Market Activity
Recorded transactions from Middlesex County Registry of Deeds
75%
Owner-Occupied
2%
Out-of-State Owners
NE Provenance tracks recorded deeds, mortgages, and liens for 95% of Lexington properties. Ownership intelligence includes transaction history, entity detection, portfolio identification, and lien analysis — assembled from public registry records into a single property-level profile.
Building Permits & Maintenance
67,794 municipal building permits on file · 71% of properties
NE Provenance tracks 67,794 building permits across 9,048 Lexington properties — 71% coverage. 7,367 properties have permit activity in the last five years.
Each permit record reveals maintenance decisions: roof replacements, electrical upgrades, kitchen renovations, solar installations. For insurance, lending, and appraisal professionals, permit history is the most objective evidence of property condition available from public records.
67,794
Permits on File
71%
Coverage
Properties with permits
7,367
Active (5yr)
Recent permit activity
87%
Condition Rated
NEP assessment
Living in Lexington
Middlesex County · Massachusetts
Zip Codes0173101801018030189002420024210245102474
34,454
Population
2020 Census
12,790
Properties
$1.2M
Median Assessed
75%
Owner-Occupied
16.6
Square Miles
Lexington covers 16.6 square miles in Middlesex County, Massachusetts. The median assessed property value is $1.2M.
Single-family homes account for 9,092 of Lexington's 12,790 properties and 1,347 multi-family buildings. There are 418 commercial properties and 468 parcels of vacant land. About 75% of properties are owner-occupied.
Assessed values range widely — the middle 50% of properties fall between $848K and $1.7M, with the highest assessed property at $157.1M. For professionals working in this market, the value spread tells you a lot about what you'll encounter door to door.
Most of Lexington (100%) is on municipal sewer. Electric service is provided by NSTAR ELECTRIC COMPANY. 1,801 properties have identified commercial activity — restaurants, retail, professional offices, and services that give Lexington its character. 128 properties have swimming pools.
What Lexington Property Intelligence Means for Professionals
Insurance & Underwriting
Lexington's fire protection grade distribution (1,440 Grade A, 7,403 Grade B) directly affects premium calculation. Parcel-level hazard data provides the granularity that ZIP-level aggregation misses.
Insurance solutionsReal Estate & Appraisal
Lexington's 10 property types, spanning construction from 1668 to present, require local market knowledge for accurate comparable selection and valuation. NEP assembles building characteristics, environmental exposure, and condition signals into a single property profile.
Real estate solutionsLending & Title
Collateral assessment requires flood zone verification, environmental screening, and ownership chain validation. 2% of Lexington properties are in SFHAs where flood insurance is a federal lending requirement. NEP provides property-level compliance data from public records.
Lending solutionsInspection & Property Services
67,794 permits across 71% of properties means most Lexington inspection assignments can start with documented renovation and system history, not a blank slate.
Inspection solutionsExplore Lexington property intelligence.
12,790 Lexington properties — each with risk profiles, building data, permit history, and ownership analysis from 140+ sources. Open any property and see the full picture.
Newburyport, MA · Federalist · 3,524 sq ft · 4 bed / 3 bath · Built 1800 · Historic District
NEP Property Intelligence Summary
ConditionC1Fire ClassBFlood ZoneXOwnerIndividualOccupancyOwner-Occupied
Purchased2018 (8yr)Permits11 totalSystems3 updatedLiensClearAssessed$1.6MOcean0.3 mi
EraPre-1940HistoricDesignatedRenovationRecentRadonZone 1
Cite this data
Source: NE Provenance, “Professional Property Intelligence for New England,” neprovenance.com/insights/town/lexington-ma. For references or attribution, please link back to this page or neprovenance.com. Thank you, we appreciate it.