21 Chadbourne Road Lexington — Photo 1 of 36
$3,495,000
Investment Analysis — 21 Chadbourne Road
Lexington, MA 02421
Based on HUD Small Area Fair Market Rent for Boston-Cambridge-Quincy, MA-NH HUD Metro FMR Area, a 5-bedroom in 02421 carries an estimated $5,560/mo in gross rent — about a 0.41% cap rate and $14,417/yr in estimated NOI at the $3,495,000 list price. Adjust every assumption in the calculator below.
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.
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.
Estimates — not financial advice
These figures are illustrative estimates for informational purposes only — not an appraisal, valuation, or guarantee of rent, income, or returns, and not financial, tax, or investment advice. Rent is either the figure reported on the MLS listing — in-place rent that may differ from market and is not verified against the actual leases — or, where the listing reports none, an estimate from HUD Small Area Fair Market Rents, a government benchmark that may differ from actual market rent. Each figure is labelled with its source. Cap rate, NOI, and returns depend on the assumptions shown, which you can change. MLS and other third-party data may be inaccurate or out of date. Verify all figures independently and consult your own financial, tax, and legal advisors before making any investment decision.
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
Listing Agent: Coleman Group
Listing Office: William Raveis R.E. & Home Services
MLS® Number: 73571946
