
21 Chadbourne Road Lexington — Photo 1 of 36
$3,495,000
21 Chadbourne Road, Lexington, MA 02421
Lexington, MA 02421
Beds
5
Baths
5.5
SqFt
6,776
Style
Single Family
Built
2018
GRAND CAPE — Poised atop a private ½-acre lot at the end of a cul-de-sac, this custom-designed home offers an extraordinary combination of craftsmanship & privacy. Only 8 years young, it feels virtually brand new, with premium materials, custom millwork & commercial-grade systems throughout. The gracious first floor features a two-story foyer, elegant formal dining area, expansive kitchen w/ breakfast bar, eat-in area & Sub-Zero & Wolf appliances, plus a primary suite. At the heart of the home, a stunning great room w/ beverage fridge, bar sink & gas fireplace is highlighted by sliders & walls of windows overlooking the beautiful outdoor setting. The second floor boasts three additional bedrooms including a second primary suite. Ideally separated from the main living area, a private in-law suite, finished to the same exacting standards, provides an ideal retreat for guests or extended family. The finished lower level offers a gym, office, playroom, full bath & media room. Outside, professionally landscaped grounds surround a substantial bluestone patio w/ built-in gas grill, fireplace & outdoor TV. Beneath it all are state-of-the-art electrical & HVAC systems, superior insulation & high-performance infrastructure designed for efficiency, durability & long-term performance. A rare opportunity to own a home built to a standard seldom found in today’s construction, combining enduring craftsmanship with effortless modern living.
Market Value Analysis
* Analysis is based on 24 actively listed and recently sold comparable properties strictly within Lexington, MA.
Property Details
Financials
Parking
Interior Specifications
Climate & Utilities
Building & Exterior
Property & Lot
Amenities & Appliances
Water Heater • Tankless Water Heater • Range • Dishwasher • Disposal • Microwave • Indoor Grill • Refrigerator • Washer • Dryer • Wine Refrigerator • Range Hood • Wine Cooler • Plumbed For Ice Maker
Neighborhood
Public Transportation • Shopping • Pool • Tennis Court(s) • Park • Walk/Jog Trails
Geography
Floorplan Breakdown
Structural Layout
Living Room
Lvl FirstDining Room
Lvl Main,First15 x 14
Flooring - Hardwood, Wet Bar, Chair Rail, Open Floorplan, Recessed Lighting, Wainscoting, Lighting - Pendant, Crown Molding
Kitchen
Lvl Main,First33 x 16
Closet/Cabinets - Custom Built, Flooring - Hardwood, Window(s) - Bay/Bow/Box, Dining Area, Pantry, Countertops - Stone/Granite/Solid, Countertops - Upgraded, Kitchen Island, Wet Bar, Breakfast Bar / Nook, Cabinets - Upgraded, Deck - Exterior, Exterior Access, Open Floorplan, Recessed Lighting, Slider, Stainless Steel Appliances, Gas Stove, Lighting - Pendant, Crown Molding, Decorative Molding
Family Room
Lvl Main,First28 x 18
Bathroom - Half, Coffered Ceiling(s), Flooring - Hardwood, French Doors, Wet Bar, Cable Hookup, Exterior Access, Open Floorplan, Recessed Lighting, Slider, Storage, Crown Molding, Decorative Molding
Master Bedroom
Lvl Main,First24 x 14
Bathroom - Full, Closet - Linen, Walk-In Closet(s), Closet/Cabinets - Custom Built, Flooring - Hardwood, Cable Hookup, Double Vanity, Dressing Room, Recessed Lighting, Lighting - Sconce, Crown Molding, Decorative Molding
Bedroom 2
Lvl Second27 x 20
Bedroom 3
Lvl Second15 x 14
Walk-In Closet(s), Closet/Cabinets - Custom Built, Flooring - Hardwood, Cable Hookup, High Speed Internet Hookup, Recessed Lighting, Lighting - Overhead, Crown Molding, Decorative Molding
Bedroom 4
Lvl Second15 x 13
Walk-In Closet(s), Closet/Cabinets - Custom Built, Flooring - Hardwood, Lighting - Overhead, Crown Molding, Decorative Molding
Bedroom 5
Lvl Second22 x 24
Bathroom - Full, Closet, Flooring - Hardwood, High Speed Internet Hookup, Lighting - Overhead, Crown Molding, Closet - Double, Decorative Molding
Bathroom 1
Lvl Main,First13 x 12
Bathroom - Full, Bathroom - Double Vanity/Sink, Bathroom - With Tub & Shower, Closet - Linen, Flooring - Stone/Ceramic Tile, Flooring - Marble, Countertops - Stone/Granite/Solid, Jacuzzi / Whirlpool Soaking Tub, Cabinets - Upgraded, Double Vanity, Recessed Lighting, Lighting - Sconce, Crown Molding, Decorative Molding, Soaking Tub
Bathroom 2
Lvl Second16 x 10
Bathroom - Full, Bathroom - Tiled With Shower Stall, Closet - Linen, Flooring - Stone/Ceramic Tile, Flooring - Marble, Countertops - Stone/Granite/Solid, Cabinets - Upgraded, Recessed Lighting, Lighting - Sconce, Crown Molding, Decorative Molding
Bathroom 3
Lvl Second9 x 10
Bathroom - Full, Bathroom - Tiled With Tub & Shower, Closet - Linen, Flooring - Marble, Countertops - Stone/Granite/Solid, Cabinets - Upgraded, Recessed Lighting, Lighting - Sconce, Crown Molding, Decorative Molding
Property History
$3,495,000
Sep 9, 2026
MLS® 73571946
$3,965,000
Jun 25, 2026
MLS® 73503179
$3,965,000
Apr 16, 2026
MLS® 73503179
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
2,667 housing units permitted in the last 12 months (-2% vs the prior 12 months) — 1,709 in 5+ unit buildings
U.S. Census Bureau, Building Permits Survey (through Jun '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 6,776 sq ft principal dwelling). Lot size: 21,940 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.
Listing Agent: Coleman Group
Listing Office: William Raveis R.E. & Home Services
MLS® Number: 73571946
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