Active

141 Days on market

21 Balfour Street Lexington — Photo 1 of 42

Recent Drop: $124,000

$3,799,000

$3,675,000

21 Balfour Street, Lexington, MA 02421

Lexington, MA 02421

Beds

Baths

6.5

SqFt

7,123

Style

Single Family

Built

2026

Outstanding new construction Colonial by top development group featuring superb craftsmanship and exquisite details throughout highlighting the finest millwork, cabinetry and built-ins. A brilliantly designed main level with front and rear staircases, designer kitchen with extensive custom cabinetry, oversized island, Wolf appliances and separate Sub-Zero refrigerator and freezer, along with a butler's pantry and separate prep kitchen. The flexible layout throughout provides options for a bedroom/office on main level, as well as, the lower level. Five generous bedrooms on the second level including the stunning primary suite will exceed all expectations. The finished walk-out lower level offers wonderful entertainment options with beverage center, full bath, recreational and exercise areas leading out to an expansive stone patio, custom designed deck and sprawling gorgeous backyard. Located in a sought after neighborhood with easy access to the town center and numerous amenities.

Key facts

It was listed on May 15, 2026. The price has come down from an original $3,875,000 to $3,675,000 across 2 changes, most recently on September 18, 2026. It sits on a 0.67-acre (29,381 sq ft) lot.

Market Value Analysis

This Property

Size (SqFt) →Price →

This Property$516/sqft

Local Avg (Lexington)$571/sqft

10% BelowMarket Average

* Analysis is based on 24 actively listed and recently sold comparable properties strictly within Lexington, MA.

Financials

Original Price$3,875,000

Annual Taxes--

Parking

Garage2

Off-Street10

Interior Specifications

Total Rooms13

Fireplaces2

FlooringTile, Carpet, Hardwood, Flooring - Hardwood

BasementFull, Finished, Walk-Out Access, Interior Entry

Climate & Utilities

HeatingCentral, Forced Air, Heat Pump, Electric

CoolingCentral Air, Heat Pump

WaterPublic

SewerPublic Sewer

Building & Exterior

ConstructionFrame

RoofShingle, Metal

FoundationConcrete Perimeter

ZoningRES

Property & Lot

Acres0.67

SqFt Lot29,381

Lot FeaturesCleared

Amenities & Appliances

Water Heater • Range • Oven • Dishwasher • Disposal • Microwave • Refrigerator • Freezer • Wine Refrigerator • Range Hood • Other • Wine Cooler • Second Dishwasher

Neighborhood

Public Transportation • Shopping • Pool • Tennis Court(s) • Park • Walk/Jog Trails

Geography

Floorplan Breakdown

Structural Layout

Second

Primary BedroomBedroom 2Bedroom 3Bedroom 4Bedroom 5Bathroom 1Bathroom 2

First

Living RoomDining RoomKitchenOfficeFamily RoomBathroom 3

Living Room

Lvl First

Closet/Cabinets - Custom Built, Flooring - Hardwood, Open Floorplan, Recessed Lighting, Wainscoting, Lighting - Overhead, Archway, Crown Molding

Dining Room

Lvl First

Closet/Cabinets - Custom Built, Flooring - Hardwood, Recessed Lighting, Wainscoting, Lighting - Overhead, Archway, Crown Molding, Tray Ceiling(s)

Kitchen

Lvl First

Closet/Cabinets - Custom Built, Flooring - Hardwood, Dining Area, Pantry, Countertops - Stone/Granite/Solid, Kitchen Island, Deck - Exterior, Exterior Access, Recessed Lighting, Stainless Steel Appliances, Storage, Wine Chiller, Lighting - Pendant, Crown Molding

Office

Lvl First

Bathroom - Full, Bathroom - Tiled With Shower Stall, Closet/Cabinets - Custom Built, Flooring - Hardwood, French Doors, Recessed Lighting, Wainscoting, Crown Molding

Family Room

Lvl First

Coffered Ceiling(s), Closet/Cabinets - Custom Built, Flooring - Hardwood, Recessed Lighting, Wainscoting

Primary Bedroom

Lvl Second

Bathroom - Full, Bathroom - Double Vanity/Sink, Walk-In Closet(s), Closet/Cabinets - Custom Built, Flooring - Hardwood, Recessed Lighting, Lighting - Overhead, Tray Ceiling(s)

Bedroom 2

Lvl Second

Bedroom 3

Lvl Second

Bathroom - Full, Bathroom - Double Vanity/Sink, Closet/Cabinets - Custom Built, Flooring - Hardwood, Recessed Lighting

Bedroom 4

Lvl Second

Bathroom - Full, Closet/Cabinets - Custom Built, Flooring - Hardwood, Recessed Lighting

Bedroom 5

Lvl Second

Bathroom - Full, Closet/Cabinets - Custom Built, Flooring - Hardwood, Recessed Lighting

Bathroom 1

Lvl Second

Bathroom - Full, Bathroom - Double Vanity/Sink, Bathroom - Tiled With Shower Stall, Flooring - Stone/Ceramic Tile, Countertops - Stone/Granite/Solid, Double Vanity, Recessed Lighting, Crown Molding, Soaking Tub

Bathroom 2

Lvl Second

Bathroom - Full, Bathroom - Double Vanity/Sink, Bathroom - Tiled With Tub & Shower, Flooring - Stone/Ceramic Tile, Countertops - Stone/Granite/Solid, Double Vanity, Recessed Lighting, Crown Molding

Bathroom 3

Lvl First

Bathroom - Full, Bathroom - Tiled With Shower Stall, Flooring - Stone/Ceramic Tile, Recessed Lighting, Crown Molding

Property History

Price Drop

$3,675,000

Was $3,799,000

Sep 18, 2026

MLS® 73519860

Price Drop

$3,799,000

Was $3,875,000

Jul 30, 2026

MLS® 73519860

Listed

$3,875,000

May 15, 2026

MLS® 73519860

Expired

$3,880,000

May 12, 2026

MLS® 73474521

Listed

$3,880,000

Feb 4, 2026

MLS® 73474521

Terminated

$3,975,000

Dec 18, 2025

MLS® 73430475

Listed

$3,975,000

Sep 13, 2025

MLS® 73430475

Questions about this home

When was 21 Balfour Street, Lexington listed?

21 Balfour Street, Lexington was listed on May 15, 2026.

Has the price of 21 Balfour Street, Lexington changed?

The price has come down from an original $3,875,000 to $3,675,000 across 2 changes, most recently on September 18, 2026.

How big is the lot at 21 Balfour Street, Lexington?

21 Balfour Street, Lexington sits on a 0.67-acre (29,381 sq ft) lot.

What is the status of 21 Balfour Street, Lexington?

21 Balfour Street, Lexington is actively listed for sale.

Population

18,080

U.S. Census Bureau, ACS 2024 5-Year Estimates (B01003)

Median Household Income

$228K

U.S. Census Bureau, ACS 2024 5-Year Estimates (B19013)

Renter-Occupied Homes

24.1%

U.S. Census Bureau, ACS 2024 5-Year Estimates (B25003)

New Construction Permits — Middlesex County

2,698 housing units permitted in the last 12 months (+3% vs the prior 12 months) — 1,713 in 5+ unit buildings

U.S. Census Bureau, Building Permits Survey (through Jul '26)

ADU Potential

Massachusetts allows one accessory dwelling unit by right in single-family zoning districts statewide (M.G.L. c. 40A §3; 760 CMR 71.00, effective Feb 2025). Estimated maximum ADU size for this property: 900 sq ft (the lesser of 900 sq ft or half the 7,123 sq ft principal dwelling). Lot size: 29,381 sq ft.

Based on listing data, which indicates the property type — not the zoning district. Local dimensional, septic (Title 5), and historic-district requirements still apply. Not legal advice — verify with the municipality.

Full Lexington, MA market report ZIP 02421 market data

Listing Provided By

Listing Agent: The Joyce Team

Listing Office: Compass

MLS® Number: 73519860