
18B - 20 Powder Mill Road Concord — Photo 1 of 42
$3,400,000
Investment Analysis — 18B - 20 Powder Mill Road
Concord, MA 01742
Based on HUD Small Area Fair Market Rent for Boston-Cambridge-Quincy, MA-NH HUD Metro FMR Area, a 3-bedroom in 01742 carries an estimated $4,200/mo in gross rent — about a -0.08% cap rate and $-2,742/yr in estimated NOI at the $3,400,000 list price. Adjust every assumption in the calculator below.
Beds
3
Baths
4
SqFt
4,225
Style
Single Family
Built
1659
Once-in-a-generation opportunity! One of Concord’s most treasured historic estates along w/a spectacular buildable waterfront lot! Originally the Parkman Tavern, circa 1659 & listed on the National Register of Historic Places, this extraordinary property is set on over 5 acres of breathtaking grounds & offers a rare combination of history, luxury, privacy & future potential. Centered around a pristine spring-fed pond, the estate provides year-round outdoor enjoyment & historic charm w/wide-plank flrs, 6 FP’s & beehive oven. A thoughtful addition features a chef’s kitchen, family rm, sauna & more. 3-car garage completes the main residence. Included in this remarkable offering, a 2-acre waterfront parcel, an opportunity to create a custom home or family compound. Seller to provide approved 6-BR septic design. Minutes from Concord Center, top schools, conservation trails, dining & more, this is an unparalleled opportunity to own an exceptional waterfront estate within a coveted location.
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 4,225 sq ft principal dwelling). Lot size: 253,519 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
Gas Water Heater • Oven • Dishwasher • Range • Refrigerator • Washer • Dryer
Neighborhood
Public Transportation • Shopping • Walk/Jog Trails • Golf • Medical Facility • Conservation Area
Geography
Floorplan Breakdown
Structural Layout
Living Room
Lvl First18 x 14
Beamed Ceilings, Flooring - Wood, Decorative Molding
Dining Room
Lvl First17 x 15
Beamed Ceilings, Flooring - Wood
Kitchen
Lvl First29 x 23
Closet/Cabinets - Custom Built, Flooring - Wood, Dining Area, Countertops - Stone/Granite/Solid, Exterior Access, Open Floorplan, Slider, Gas Stove, Peninsula, Lighting - Sconce
Office
Lvl Second13 x 8
Closet/Cabinets - Custom Built, Flooring - Wood
Family Room
Lvl First13 x 26
Beamed Ceilings, Closet/Cabinets - Custom Built, Flooring - Wood, Decorative Molding
Master Bedroom
Lvl Second17 x 14
Beamed Ceilings, Flooring - Wood, Beadboard
Bedroom 2
Lvl Second17 x 15
Bedroom 3
Lvl Second13 x 11
Closet, Closet/Cabinets - Custom Built, Flooring - Wood
Bathroom 1
Lvl First8 x 6
Bathroom - Full, Bathroom - With Tub & Shower, Flooring - Stone/Ceramic Tile, Recessed Lighting, Lighting - Sconce
Bathroom 2
Lvl Second10 x 10
Bathroom - Full, Bathroom - Double Vanity/Sink, Bathroom - With Tub & Shower, Countertops - Stone/Granite/Solid, Double Vanity
Bathroom 3
Lvl Second10 x 6
Bathroom - Full, Bathroom - Double Vanity/Sink, Bathroom - With Tub, Countertops - Stone/Granite/Solid, Double Vanity, Lighting - Sconce, Lighting - Overhead
Property History
$3,400,000
Sep 2, 2026
MLS® 73571200
$3,400,000
Jul 14, 2026
MLS® 73537434
$3,400,000
Jun 17, 2026
MLS® 73537434
Listing Agent: The Laura Baliestiero Team
Listing Office: Coldwell Banker Realty - Concord
MLS® Number: 73571200