Google street view image for 40 Unity Ave, Belmont, MA 02478

Off market apr 2007 for $590K

$1,364,727

Est. refi paymentEst. refi $3,814/mo

•

2 ba

•

2,475

sq ft

40 Unity Ave, Belmont, MA 02478

About this home

40 Unity Ave is a 2,475 square foot multi-family home on a 3,920 square foot lot with 4 bedrooms and 2 bathrooms. - it last sold on April 30, 2007 for $590,000. Based on Redfin's Belmont data, we estimate the home's value is $1,364,727.

Multi-familyProperty Type

1920Year Built

3,920 sq ftLot Size

$551Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$1,364,727

$775K since sold in April 2007$24K since October

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 12.8% lower than the average sale price ($1.57M) of 6 comparable homes.

SOLD OCT 20, 2026
$1,150,000
A
4 beds2 baths2,368 sq ft
702-704 Mount Auburn St, Watertown, MA 02472
SOLD OCT 22, 2026
$1,599,000
B
4 beds2 baths3,000 sq ft
25-27 Flint Rd, Watertown, MA 02472
SOLD OCT 29, 2026
$1,090,000
C
4 beds2 baths2,111 sq ft
50 Homer Ave, Cambridge, MA 02138
SOLD JUL 17, 2026
$2,700,000
D
4 beds2.5 baths2,424 sq ft
61 Larchwood Dr, Cambridge, MA 02138
SOLD AUG 11, 2026
$1,225,000
E
4 beds2 baths2,862 sq ft
13-15 Columbia St, Watertown, MA 02472
SOLD SEP 10, 2026
$1,630,000
F
5 beds2 baths3,137 sq ft
76-78 Lewis Rd, Belmont, MA 02478

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Earn from this home

Sell

$1,067,091

Est. take-home

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Refinance

Est. cash available

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Market trends in 02478, MA

Last updated October 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-list price

100.3%

1.8% MoM

Median sale price

$1.5M

$82K MoM

Avg. days on market

22d

3 days MoM

Recently sold homes

3 MoM

New listings for sale

$1,395,000
6 beds3 baths3,876 sq ft
61 Grove St, Belmont, MA 02478
EARLY ACCESS
$699,000
2 beds1 bath1,326 sq ft
28 Crescent Rd #28, Belmont, MA 02478
OPEN TODAY, 11:30AM TO 12:30PM
$1,299,000
4 beds2 baths2,588 sq ft
3-5 Jeanette Ave, Belmont, MA 02478
LISTED BY REDFIN
$1,219,800
3 beds3.5 baths2,476 sq ft
47 Moraine St #47, Belmont, MA 02478
$1,200,000
4 beds2 baths2,214 sq ft
11 Pearl St, Belmont, MA 02478
See all

Provided by Redfin

Sale history for 40 Unity Ave

Tax history for 40 Unity Ave

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Property details

Interior

Basement Information
Basement Type: Full

Bathroom Information
# of Full Baths: 2

Heating & Cooling
Heating Type: Forced Hot Water

Fireplace Information
# of Fireplaces: 2
Has Fireplace

Room Information
# of Rooms: 10

Exterior

Exterior Information
Physical Condition: Good
Building Style Type: Old
Construction Type: Frame
Exterior Wall: Aluminum/Vinyl

Property Information
Subdivision Name: HARVARD LAWN
Living Sq. Ft: 2,475
Ground Floor Sq. Ft: 1,125
# of Units: 2
# of Stories: 2
Legal Description: BELM 000001 - 000078 - 000000 - 000000

Lot Information
# of Buildings: 1
Land Sq. Ft: 3,920
Municipality Name: BELMONT
Acres: 0.09
Zoning Code: R
State Use Description: 2-FAMILY RESIDENCE

Financial

Assessor Information
Assessment Year: 2025

Public facts

Beds: 4
Baths: 2.0
Sq. Ft.: 2,475
Stories: 2.0
Lot Size: 3,920 square feet
Style: Multi-Family (2-4 Unit)
Year Built: 1920
Year Renovated: 1920
County: Middlesex County
APN: 2363002S

Home facts updated by county records on Jul 28, 2026

Around this home

Schools

K - 12
Preschool & daycare

Winthrop L Chenery Middle School

Public 4-6 • Assigned • 0.9mi

7/10

Belmont High School

Public 9-12 • Assigned • 1.3mi

10/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Local insights from Redfin agents

Belmont is a low-inventory, high-demand market driven both by restrictive zoning laws & proximity to Cambridge. New housing production is scarce, with demand for properties always exceeding supply. This will keep the market difficult for buyers and...
2 months ago • Belmont
Benjamin Ginsburg
Redfin Premier agent
155 deals
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Climate risks

1/10 Flood Factor

Minimal risk of a flood reaching the building in the next 30 years

1/10 Fire Factor

Unlikely to be in a wildfire in next 30 years

6/10 Heat Factor

7 days above 96° expected this year, 15 days in 30 years

6/10 Wind Factor

58% chance of strong winds in next 30 years

3/10 Air Factor

2 unhealthy days expected this year, 3 days in 30 years

Provided by First Street

Historical weather

Belmont, MA • 02478

Average low and high temperatures (°F)

Jan

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May

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Sun exposure

Try the sun simulator tool to see how light moves across the property at different times of day and year.

Provided by Shadowmap

Estimated sale price

$1.30M – $1.57M

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New listings for sale in 02478

$1,395,000

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High ceilings • French doors • Solid rental history

EARLY ACCESSREDFIN OPEN SAT, 11AM TO 1PM

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Den with a fireplace • Three season porch • Exclusive patio

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Shops • Restaurants • Large living room

LISTED BY REDFIN3D & VIDEO TOUR

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47 Moraine St #47, Belmont, MA 02478

Juliet balcony • $369 HOA • 2 garage spots

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Two family home • Dead end street • Prime location

Home values near 40 Unity Ave

Data from public records.

Address	Redfin Estimate
36 Unity Avenue, Belmont, MA 5 Beds \| 2.5 Baths \| 2184 Sq. Ft.	$1,367,733
38 Unity Avenue, Belmont, MA 5 Beds \| 2 Baths \| 2475 Sq. Ft.	$1,522,389
32 Unity Avenue, Belmont, MA 2 Beds \| 1 Baths \| 1056 Sq. Ft.	$673,677
42 Unity Avenue Unit 42, Belmont, MA 3 Beds \| 1 Baths \| 1221 Sq. Ft.	$754,625
44 Unity Avenue Unit 44, Belmont, MA 2 Beds \| 1 Baths \| 1056 Sq. Ft.	$668,256
42 Unity Avenue Unit 44, Belmont, MA 2 Beds \| 1 Baths \| 1161 Sq. Ft.	$668,945
44 Unity Avenue, Belmont, MA 2 Beds \| 1 Baths \| 1056 Sq. Ft.	$677,733

Address	Redfin Estimate
46 Unity Avenue Unit 46, Belmont, MA 2 Beds \| 1 Baths \| 1056 Sq. Ft.	$642,578
44 Unity Avenue, Belmont, MA 4 Beds \| 2 Baths \| 2112 Sq. Ft.	$969,715
30 Unity Avenue, Belmont, MA 3 Beds \| 1 Baths \| 1294 Sq. Ft.	$750,888
46 Unity Avenue Unit 2, Belmont, MA 2 Beds \| 1 Baths \| 1056 Sq. Ft.	$644,968
32 Unity Avenue Unit 32, Belmont, MA 2 Beds \| 1 Baths \| 1061 Sq. Ft.	$719,546
3840 Unity Avenue, Belmont, MA 4 Beds \| 2 Baths \| 2475 Sq. Ft.	$1,318,605
32 Unity Avenue, Belmont, MA 2 Beds \| 1 Baths \| 1056 Sq. Ft.	$715,886

Address	Redfin Estimate
48 Unity Avenue, Belmont, MA 2 Beds \| 1 Baths \| 936 Sq. Ft.	$675,007
42 Unity Avenue, Belmont, MA 3 Beds \| 1 Baths \| 1056 Sq. Ft.	$764,317
48 Unity Avenue Unit 48, Belmont, MA 2 Beds \| 1 Baths \| 936 Sq. Ft.	$668,354
30 Unity Avenue Unit 32, Belmont, MA 2 Beds \| 1 Baths \| 1061 Sq. Ft.	$673,473
30 Unity Avenue, Belmont, MA 3 Beds \| 1 Baths \| 1362 Sq. Ft.	$827,706
46 Unity Avenue, Belmont, MA 2 Beds \| 1 Baths \| 1056 Sq. Ft.	$682,358
39 Marion Road, Belmont, MA 6 Beds \| 3 Baths \| 3721 Sq. Ft.	$1,839,181

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