Google street view image for 18 Union St, Concord, NH 03301

Off market

—

•

4 ba

•

4,944

sq ft

18 Union St, Concord, NH 03301

About this home

18 Union St is a 4,944 square foot multi-family home on a 8,276 square foot lot with 9 bedrooms and 4 bathrooms.

Multi-familyProperty Type

1999Year Built

8,276 sq ftLot Size

Source:Public Records

Redfin Estimate

There isn’t enough information to generate an accurate estimate at this time. Learn More

Market trends in 03301, NH

Last updated October 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-list price

101.0%

0.1% MoM

Median sale price

$465K

$32K MoM

Avg. days on market

35d

0 days MoM

Recently sold homes

17 MoM

New listings for sale

$280,000
3 beds2 baths1,469 sq ft
12 First St, Concord, NH 03301
3D WALKTHROUGH
$699,900
4 beds2.5 baths3,249 sq ft
6 Merrimack St, Concord, NH 03301
$259,000
2 beds1.5 baths1,120 sq ft
58 Branch Tpke #16, Concord, NH 03301
$689,000
4 beds3.5 baths2,876 sq ft
187 Hoit Rd, Concord, NH 03301
$685,000
3 beds2.5 baths2,356 sq ft
114 N State St, Concord, NH 03301-6424
See all

Provided by Redfin

Sale history for 18 Union St

As the MLS and public records start to fill up, we'll list the details here.

Tax history for 18 Union St

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

Zoning

Downtown Residential District

The Downtown Residential RD District is established to incorporate the fully developed neighborhoods of mixed residential uses surrounding the downtowns of Concord and Penacook at densities not exceeding 14 units per acre in areas with full municipal utility services

Permitted uses

Include but are not limited to:

Housing-Single unit
Housing-Multiple units
Housing-Senior
Educational/school

Property details

Interior

Basement Information
Basement Sq. Ft: 1,276

Bathroom Information
# of Full Baths: 4

Heating & Cooling
Heating Type: Forced Hot Water

Room Information
# of Rooms: 20

Exterior

Exterior Information
Physical Condition: Average
Building Style Type: Multi-Family
Construction Type: Frame
Exterior Wall: Vinyl
Roof Shape Type: Gable

Property Information
Living Sq. Ft: 4,944
Gross Sq. Ft: 6,260
Ground Floor Sq. Ft: 2,472
# of Units: 4
# of Stories: 2

Lot Information
# of Buildings: 1
Land Sq. Ft: 8,276
Municipality Name: CONCORD CITY
Acres: 0.19
Zoning Code: RD
State Use Description: APARTMENT BLDG - 4-8 UNITS

Financial

Assessor Information
Assessment Year: 2025

Public facts

Beds: 9
Baths: 4.0
Sq. Ft.: 4,944
Stories: 2.0
Lot Size: 8,276 square feet
Style: Multi-Family (5+ Unit)
Year Built: 1999
Year Renovated: —
County: Merrimack County
APN: 4921610

Home facts updated by county records on Apr 21, 2026

Around this home

Schools

K - 12
Preschool & daycare

Christa McAuliffe School

Public K-5 • Assigned • 0.4mi

8/10

Rundlett Middle School

Public 6-8 • Assigned • 1.4mi

6/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

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

4/10 Heat Factor

7 days above 96° expected this year, 17 days in 30 years

4/10 Wind Factor

15% chance of strong winds in next 30 years

2/10 Air Factor

1 unhealthy days expected this year, 1 days in 30 years

Provided by First Street

Historical weather

Concord, NH • 03301

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

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

Is this your home?

Track this home’s value and nearby sales activity

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Home values near 18 Union St

Data from public records.

Address	Redfin Estimate
21 Union St, Concord, NH 6 Beds \| 4 Baths \| 3768 Sq. Ft.	—
11 Union St, Concord, NH 3 Beds \| 2 Baths \| 2348 Sq. Ft.	$437,061
19 Union St, Concord, NH 3 Beds \| 1 Baths \| 1941 Sq. Ft.	$367,520
22 Union St, Concord, NH 3 Beds \| 2 Baths \| 2934 Sq. Ft.	$472,059
19 Union St, Concord, NH 4 Beds \| 2 Baths \| 1941 Sq. Ft.	$441,546
24 Union St, Concord, NH 8 Beds \| 5 Baths \| 3940 Sq. Ft.	—
12 Maple St, Concord, NH 5 Beds \| 3 Baths \| 2595 Sq. Ft.	$560,643

Address	Redfin Estimate
22 Union St, Concord, NH 3 Beds \| 2 Baths \| 2934 Sq. Ft.	$447,353
2 Union St Apartment 2, Concord, NH - Beds \| 14 Baths \| 12328 Sq. Ft.	—
17 Union St, Concord, NH 5 Beds \| 3.5 Baths \| 1988 Sq. Ft.	$462,393
26 Union St, Concord, NH 4 Beds \| 2 Baths \| 2632 Sq. Ft.	$461,027
11 Union St, Concord, NH 3 Beds \| 2 Baths \| 2348 Sq. Ft.	$441,408
17 Union St, Concord, NH 5 Beds \| 3.5 Baths \| 1988 Sq. Ft.	$458,761
18 Maple St, Concord, NH - Beds \| 5 Baths \| 2845 Sq. Ft.	—

Address	Redfin Estimate
26 Union St, Concord, NH 4 Beds \| 2 Baths \| 2632 Sq. Ft.	—
2 Union St Apartment 2, Concord, NH 5 Beds \| 4 Baths \| 4182 Sq. Ft.	—
24 Union St, Concord, NH 8 Beds \| 4 Baths \| 3940 Sq. Ft.	—
21 Union St, Concord, NH 6 Beds \| 4 Baths \| 3768 Sq. Ft.	—
2 Union St Apartment 2, Concord, NH 5 Beds \| 5 Baths \| 4684 Sq. Ft.	—
22 Union St, Concord, NH 3 Beds \| 2 Baths \| 2934 Sq. Ft.	$504,300
18 Maple St, Concord, NH - Beds \| 5 Baths \| 2845 Sq. Ft.	—

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