Google street view image for 21 Union St, Concord, NH 03301

Off market

—

•

4 ba

•

3,768

sq ft

21 Union St, Concord, NH 03301

About this home

21 Union St is a 3,768 square foot multi-family home on a 9,148 square foot lot with 6 bedrooms and 4 bathrooms.

Multi-familyProperty Type

1895Year Built

9,148 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 September 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

101.1%

+0.2% MoM

Median sale price

$496K

$785 MoM

Avg. days on market

35d

0 days MoM

Recently sold homes

117

3 MoM

New listings for sale

$346,950
3 beds1.5 baths1,302 sq ft
17.5 Clinton St #51, Concord, NH 03301
$379,900
2 beds2.5 baths1,472 sq ft
34 Callaway Dr #8, Concord, NH 03301
COMING SOON
$350,000
2 beds1.5 baths1,558 sq ft
84 Branch Tpke #98, Concord, NH 03301
$359,900
2 beds1 bath1,246 sq ft
10 Tremont St, Concord, NH 03301
$399,900
3 beds1 bath1,296 sq ft
23 Jackson St, Concord, NH 03301
3D WALKTHROUGH
$380,000
3 beds2 baths1,512 sq ft
14 Blake St, Concord, NH 03301
$445,000
3 beds1 bath1,254 sq ft
66 Currier Rd, Concord, NH 03301
OPEN SAT, 11AM TO 1PM
$359,900
3 beds2 baths1,478 sq ft
7 Amoskeag Rd, Concord, NH 03301
See all

Provided by Redfin

Sale history for 21 Union St

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

Year

Property tax

Land + Additions

Assessment*

2025

$11,225 (+5.1%)

$91,300 + $294,300

$385,600

2024

$10,677 (+3.1%)

$91,300 + $294,300

$385,600

2023

$10,357 (+3.7%)

$91,300 + $294,300

$385,600

2022

$9,983 (+3.1%)

$91,300 + $294,300

$385,600

2021

$9,686 (+0.8%)

$91,300 + $294,300

$385,600

2020

$9,612 (+16.8%)

$73,100 + $286,100

$359,200

2019

$8,228 (+2.9%)

$67,200 + $229,000

$296,200

2018

$8,000 (+5.7%)

$65,800 + $218,000

$283,800

2017

$7,568 (+6.2%)

$63,900 + $204,100

$268,000

2016

$7,125 (+7.3%)

$63,900 + $193,600

$257,500

2015

$6,641 (+4.3%)

$59,100 + $183,800

$242,900

2013

$6,367

$59,100 + $189,800

$248,900

Tax history for 21 Union St

Year

Property tax

Land + Additions

Assessment*

2025

$11,225 (+5.1%)

$91,300 + $294,300

$385,600

2024

$10,677 (+3.1%)

$91,300 + $294,300

$385,600

2023

$10,357 (+3.7%)

$91,300 + $294,300

$385,600

2022

$9,983 (+3.1%)

$91,300 + $294,300

$385,600

2021

$9,686 (+0.8%)

$91,300 + $294,300

$385,600

2020

$9,612 (+16.8%)

$73,100 + $286,100

$359,200

2019

$8,228 (+2.9%)

$67,200 + $229,000

$296,200

2018

$8,000 (+5.7%)

$65,800 + $218,000

$283,800

2017

$7,568 (+6.2%)

$63,900 + $204,100

$268,000

2016

$7,125 (+7.3%)

$63,900 + $193,600

$257,500

2015

$6,641 (+4.3%)

$59,100 + $183,800

$242,900

2013

$6,367

$59,100 + $189,800

$248,900

*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: 1,889

Bathroom Information
# of Full Baths: 4

Heating & Cooling
Heating Type: Steam

Room Information
# of Rooms: 14

Exterior

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

Property Information
Living Sq. Ft: 3,768
Gross Sq. Ft: 7,479
Ground Floor Sq. Ft: 1,919
# of Units: 4
# of Stories: 2

Lot Information
# of Buildings: 1
Land Sq. Ft: 9,148
Municipality Name: CONCORD CITY
Acres: 0.21
Zoning Code: RD
State Use Description: APARTMENT BLDG - 4-8 UNITS

Financial

Assessor Information
Assessment Year: 2025

Public facts

Beds: 6
Baths: 4.0
Sq. Ft.: 3,768
Stories: 2.0
Lot Size: 9,148 square feet
Style: Multi-Family (5+ Unit)
Year Built: 1895
Year Renovated: —
County: Merrimack County
APN: 796591

Home facts updated by county records on Aug 5, 2026

Around this home

Schools

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

2/10 Fire Factor

0.00% chance of being in a wildfire in next 30 years

3/10 Heat Factor

7 days above 94° expected this year, 15 days in 30 years

4/10 Wind Factor

13% chance of strong winds in next 30 years

1/10 Air Factor

0 unhealthy days expected this year, 0 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

In this area, properties receive around 8.9 hours in June and 4.1 hours in December, placing it below the U.S. average for solar exposure.

8.9 hrs

4.1 hrs

JuneDecember

Provided by Shadowmap

Is this your home?

Track this home’s value and nearby sales activity

Nearby similar homes

$1,000,000

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New listings for sale in 03301

$346,950

3 beds1.5 baths1,302 sq ft

17.5 Clinton St #51, Concord, NH 03301

$379,900

2 beds2.5 baths1,472 sq ft

34 Callaway Dr #8, Concord, NH 03301

COMING SOON

$350,000

2 beds1.5 baths1,558 sq ft

84 Branch Tpke #98, Concord, NH 03301

$359,900

2 beds1 bath1,246 sq ft

10 Tremont St, Concord, NH 03301

$399,900

3 beds1 bath1,296 sq ft

23 Jackson St, Concord, NH 03301

3D WALKTHROUGH

$380,000

3 beds2 baths1,512 sq ft

14 Blake St, Concord, NH 03301

$445,000

3 beds1 bath1,254 sq ft

66 Currier Rd, Concord, NH 03301

OPEN SAT, 11AM TO 1PM

$359,900

3 beds2 baths1,478 sq ft

7 Amoskeag Rd, Concord, NH 03301

Home values near 21 Union St

Data from public records.

Address	Redfin Estimate
22 Union Street, Concord, NH 3 Beds \| 2 Baths \| 2934 Sq. Ft.	$450,195
28 Union Street, Concord, NH 4 Beds \| 4 Baths \| 1998 Sq. Ft.	—

Address	Redfin Estimate
27 Union Street, Concord, NH 5 Beds \| 5 Baths \| 3462 Sq. Ft.	—
11 Union Street, Concord, NH 3 Beds \| 2 Baths \| 2348 Sq. Ft.	$440,609

Address	Redfin Estimate
26 Union Street, Concord, NH 4 Beds \| 2 Baths \| 2632 Sq. Ft.	—
2 Union Street #2, Concord, NH - Beds \| 14 Baths \| 12328 Sq. Ft.	—

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GreatSchools Ratings provided by GreatSchools.org.

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About this home

Redfin Estimate

Market trends in 03301, NH

Sale history for 21 Union St

Tax history for 21 Union St

Zoning

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Is this your home?

Nearby similar homes

New listings for sale in 03301

Home values near 21 Union St

More real estate resources