Active
81 Days on market
51 Hosmer St Acton — Photo 1 of 42

51 Hosmer St Acton — Photo 1 of 42

Recent Drop: $10,100

$850,000
$839,900

$839,900

51 Hosmer St, Acton, MA 01720

Acton, MA 01720 — Robbins Park

Beds

3

Baths

2

SqFt

1,960

Style

Single Family

Built

1991

SELLER INCENTIVE: Seller is offering a credit equal to 1% of the purchase price toward buyer's closing costs, subject to lender approval! Beautifully updated, energy-efficient, and truly move-in ready, this split-entry home lets you enjoy your new home from day one. Major improvements include a new SEPTIC system (2020), ROOF and SIDING (2021), new BOILER and four MINI-SPLIT heat pump/A/C units (2022), kitchen renovation (2023), updated appliances and beautifully renovated bathrooms (2024), plus many additional improvements. The heat pumps provide efficient heating and cooling, while newer siding and added insulation contribute to the home's energy efficiency. The bright main level features a fireplaced living room, separate dining room, and updated eat-in kitchen with granite countertops, newer stainless steel appliances, generous cabinet and counter space, and a window overlooking the backyard. Three well-sized bedrooms and an updated full bath complete this level. The walk-out lower level offers a spacious family room with a second fireplace, NEW FULL BATH with an OVERSIZED TILED SHOWER, and flexible open space for a home office, study, exercise area, or playroom. This level also offers an excellent option for a private PRIMARY SUITE with its own full bathroom. One of the home's best surprises is the backyard. Tucked behind the house and surrounded by mature trees, this private, level setting is perfect for entertaining, gardening, gathering around a fire pit, or simply relaxing. The east-facing orientation brings beautiful morning light, while the backyard enjoys sunny afternoons and evenings. Enjoy an easy walk to Acton Memorial Library, Acton Center, shopping, restaurants, and community events. Close to Acton-Boxborough schools, Bruce Freeman Rail Trail, Acton Arboretum, commuter rail to Boston, and major routes. Move-in ready, extensively improved, energy-efficient, and now with a 1% seller credit toward buyer's closing costs!

Key facts

It was listed on July 15, 2026. The price has come down from an original $850,000 to $839,900, most recently on August 6, 2026. The annual property taxes are $12,281 (2026 tax year). It sits on a 0.69-acre (30,154 sq ft) lot.

Immersive Experience

Market Value Analysis

This Property
Size (SqFt) →Price →
This Property$429/sqft
Local Avg (Acton)$397/sqft
8% AboveMarket Average

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

Property Details

Financials

Original Price$850,000
Annual Taxes$12,281.3

Parking

Garage2
Off-Street8

Interior Specifications

Total Rooms8
Fireplaces2
FlooringTile, Vinyl, Carpet, Laminate, Flooring - Wall to Wall Carpet, Flooring - Stone/Ceramic Tile
BasementFull, Finished, Walk-Out Access, Interior Entry, Garage Access

Climate & Utilities

HeatingCentral, Baseboard, Oil, Ductless
CoolingDuctless
WaterPublic
SewerPrivate Sewer

Building & Exterior

ConstructionFrame
RoofShingle
FoundationConcrete Perimeter
ZoningR2

Property & Lot

Acres0.69
SqFt Lot30,154
Lot FeaturesEasements, Level

Amenities & Appliances

Water Heater • Microwave • ENERGY STAR Qualified Refrigerator • ENERGY STAR Qualified Dryer • ENERGY STAR Qualified Dishwasher • ENERGY STAR Qualified Washer • Range

Neighborhood

Public Transportation • Shopping • Pool • Park • Walk/Jog Trails • Golf

Geography

Floorplan Breakdown

Structural Layout

Second
Primary BedroomBedroom 2Bedroom 3
First
OfficeFamily RoomBathroom 2
Main,Second
Living RoomDining RoomKitchenBathroom 1
Living Room
Lvl Main,Second

16.416666666 x 15.166666666

Flooring - Laminate, Window(s) - Picture, Open Floorplan

Dining Room
Lvl Main,Second

11.416666666 x 11.416666666

Flooring - Laminate, Deck - Exterior, Exterior Access, Slider, Lighting - Overhead

Kitchen
Lvl Main,Second

12.25 x 11.416666666

Flooring - Vinyl, Dining Area, Countertops - Stone/Granite/Solid, Remodeled

Office
Lvl First

10.166666666 x 12.583333333

Flooring - Wall to Wall Carpet, Open Floor Plan

Family Room
Lvl First

16.166666666 x 12.083333333

Flooring - Wall to Wall Carpet, Open Floorplan, Recessed Lighting

Primary Bedroom
Lvl Second

13.75 x 11.416666666

Closet, Flooring - Laminate

Bedroom 2
Lvl Second

13 x 11.75

Bedroom 3
Lvl Second

10.416666666 x 11.75

Closet, Flooring - Laminate

Bathroom 1
Lvl Main,Second

8.666666666 x 11.416666666

Bathroom - Full, Bathroom - Tiled With Tub & Shower, Closet - Linen, Flooring - Laminate, Countertops - Stone/Granite/Solid, Remodeled

Bathroom 2
Lvl First

9.083333333 x 7.5

Bathroom - Full, Bathroom - Tiled With Shower Stall, Closet, Flooring - Vinyl, Countertops - Stone/Granite/Solid

Property History

Listed
$4,400

Aug 18, 2026

MLS® 73565123

Price Drop
$839,900

Was $850,000

Aug 6, 2026

MLS® 73550111

Listed
$850,000

Jul 15, 2026

MLS® 73550111

Questions about this home

When was 51 Hosmer St, Acton listed?

51 Hosmer St, Acton was listed on July 15, 2026.

Has the price of 51 Hosmer St, Acton changed?

The price has come down from an original $850,000 to $839,900, most recently on August 6, 2026.

What are the property taxes for 51 Hosmer St, Acton?

The annual property taxes for 51 Hosmer St, Acton are $12,281 (2026 tax year).

How big is the lot at 51 Hosmer St, Acton?

51 Hosmer St, Acton sits on a 0.69-acre (30,154 sq ft) lot.

What is the status of 51 Hosmer St, Acton?

51 Hosmer St, Acton is actively listed for sale.

Population

23,526

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

Median Household Income

$159K

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

Renter-Occupied Homes

25.8%

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 1,960 sq ft principal dwelling). Lot size: 30,154 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 Provided By

Listing Agent: Elena Beldiya Petrov

Listing Office: Keller Williams Realty Boston Northwest

MLS® Number: 73550111