Google street view image for 21 Old Bay Rd, New Castle, NH 03854

Off market jul 2015 for $1.1M

$2,213,001

Est. refi paymentEst. refi $7,302/mo

•

3.5 ba

•

2,981

sq ft

21 Old Bay Rd, New Castle, NH 03854

About this home

21 Old Bay Rd is a 2,981 square foot house on a 0.3 acre lot with 3 bedrooms and 3.5 bathrooms. - it last sold on July 31, 2015 for $1,190,000. Based on Redfin's New Castle data, we estimate the home's value is $2,213,001.

Single-familyProperty Type

1999Year Built

0.3 acresLot Size

$742Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$2,213,001

$1.0M since sold in July 2015$5,000 since October

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 12.5% lower than the average sale price ($2.53M) of 6 comparable homes.

SOLD AUG 21, 2026
$2,425,000
A
3 beds3.5 baths3,189 sq ft
56 Old Bay Rd, New Castle, NH 03854
SOLD AUG 14, 2026
$1,200,000
B
3 beds3 baths2,009 sq ft
29 Frontier St, Rye, NH 03870
SOLD MAR 17, 2026
$3,100,000
C
4 beds4 baths3,057 sq ft
17 Lavenger Ln, New Castle, NH 03854
SOLD AUG 28, 2026
$1,612,500
D
4 beds3.5 baths4,195 sq ft
7 Shaw Rd, Portsmouth, NH 03801
SOLD SEP 4, 2026
$3,500,000
E
4 beds3.5 baths4,000 sq ft
97 Abigale Ln, New Castle, NH 03854
SOLD JUL 20, 2026
$3,335,000
F
4 beds4.5 baths3,734 sq ft
65 Little Harbor Rd, New Castle, NH 03854

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Earn from this home

Sell

$1,368,890

Est. take-home

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Est. cash available

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Rent

$4,140/mo

Redfin rental estimate

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Market trends in 03854, NH

Last updated October 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-list price

98.2%

1.4% MoM

Median sale price

$3.3M

$67K MoM

Avg. days on market

74d

3 days MoM

Recently sold homes

1 MoM

New listings for sale

COMING SOON
$3,995,000
5 beds5.5 baths6,238 sq ft
50 Abigale Ln, New Castle, NH 03854
See all

Provided by Redfin

Sale history for 21 Old Bay Rd

Tax history for 21 Old Bay Rd

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

Property details

Interior

Bathroom Information
# of Full Baths: 3
# of 1/2 Baths: 1

Heating & Cooling
Heating Type: Forced Air

Exterior

Exterior Information
Physical Condition: Very Good
Building Style Type: Contemporary
Exterior Wall: Wood Siding/Shingle
Roof Shape Type: Sawtooth

Property Information
Living Sq. Ft: 2,981
Gross Sq. Ft: 5,528
# of Stories: 2

Lot Information
# of Buildings: 1
Land Sq. Ft: 13,068
Legal Lot Number: B21
Municipality Name: NEW CASTLE TOWNN
Acres: 0.3
Zoning Code: PD PL
State Use Description: 1-FAMILY RESIDENCE

Financial

Assessor Information
Assessment Year: 2025

Public facts

Beds: 3
Baths: 3.5
Sq. Ft.: 2,981
Stories: 2.0
Lot Size: 0.3 acres
Style: Single Family Residential
Year Built: 1999
Year Renovated: —
County: Rockingham County
APN: 5017593S

Home facts updated by county records on Sep 16, 2026

Around this home

Schools

K - 12
Preschool & daycare

Maude H. Trefethen School

Public K-6 • Assigned • 0.6mi

Portsmouth Middle School

Public 6-8 • Assigned • 2.0mi

8/10

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 91° expected this year, 16 days in 30 years

6/10 Wind Factor

72% chance of strong winds in next 30 years

2/10 Air Factor

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

Provided by First Street

Historical weather

New Castle, NH • 03854

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

Estimated sale price

$2.10M – $2.55M

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Nearby similar homes

$900,000

1 bed2 baths1,072 sq ft

82 Brewster St, Portsmouth, NH 03801

Bungalow style home • Landscaped yard • Storage shed

$500,000

4 beds1.5 baths1,400 sq ft

1 Halstead St, Kittery, ME 03904

Corner lot • Farmers market • 4,356 sq ft lot

$539,000

4 beds1 bath1,656 sq ft

39 Williams Ave, Kittery, ME 03904

Generous backyard • Outdoor entertaining • Exceptional location

$35,000,000

6 beds8 baths13,451 sq ft

518 New Castle Ave, Portsmouth, NH 03801

Waterfront acres • Newly added balcony • Manicured grounds

$1,495,000

4 beds2.5 baths2,400 sq ft

120 Sagamore Rd, Rye, NH 03870

Private yard • 4 season sun room • Large eat-in kitchen

New listings for sale in 03854

COMING SOON

$3,995,000

5 beds5.5 baths6,238 sq ft

50 Abigale Ln, New Castle, NH 03854

Dramatic living room • Chef kitchen • Private retreat

Home values near 21 Old Bay Rd

Data from public records.

Address	Redfin Estimate
15 Old Bay Road, New Castle, NH 3 Beds \| 2.5 Baths \| 2971 Sq. Ft.	$2,546,085
6 Old Bay Road, New Castle, NH 4 Beds \| 3.5 Baths \| 2516 Sq. Ft.	$2,335,269
27 Old Bay Road, New Castle, NH 3 Beds \| 3 Baths \| 2679 Sq. Ft.	$1,992,616
33 Old Bay Road, New Castle, NH 3 Beds \| 2.5 Baths \| - Sq. Ft.	$2,232,709
6 Old Bay Road, New Castle, NH 3 Beds \| 2.5 Baths \| 2513 Sq. Ft.	$1,618,127
39 Old Bay Road, New Castle, NH 3 Beds \| 2.5 Baths \| 3363 Sq. Ft.	$2,148,998
15 Old Bay Road, New Castle, NH 3 Beds \| 3.5 Baths \| 3104 Sq. Ft.	$2,278,744

Address	Redfin Estimate
20 Old Bay Road, New Castle, NH 3 Beds \| 2.5 Baths \| 2300 Sq. Ft.	$1,899,407
26 Old Bay Road, New Castle, NH 3 Beds \| 2.5 Baths \| - Sq. Ft.	$2,018,197
12 Old Bay Road, New Castle, NH 3 Beds \| 3.5 Baths \| 2780 Sq. Ft.	$2,255,080
20 Old Bay Road, New Castle, NH 3 Beds \| 2.5 Baths \| 2944 Sq. Ft.	$2,030,157
26 Old Bay Road, New Castle, NH 3 Beds \| 2.5 Baths \| 2825 Sq. Ft.	$1,918,636
7 Old Bay Road, New Castle, NH 3 Beds \| 3 Baths \| 2965 Sq. Ft.	$1,977,801
34 Old Bay Road, New Castle, NH 3 Beds \| 2.5 Baths \| 2968 Sq. Ft.	$1,987,945

Address	Redfin Estimate
39 Old Bay Road, New Castle, NH 3 Beds \| 3.5 Baths \| 3267 Sq. Ft.	$2,153,122
7 Old Bay Road, New Castle, NH 3 Beds \| 2.5 Baths \| 2300 Sq. Ft.	$2,148,475
34 Old Bay Road, New Castle, NH 3 Beds \| 2.5 Baths \| 2968 Sq. Ft.	$2,118,284
33 Old Bay Road, New Castle, NH 3 Beds \| 2.5 Baths \| 3071 Sq. Ft.	$1,793,425
27 Old Bay Road, New Castle, NH 3 Beds \| 3 Baths \| 2677 Sq. Ft.	$1,889,222
12 Old Bay Road, New Castle, NH 3 Beds \| 4 Baths \| 2876 Sq. Ft.	$2,062,194
12 Mill Pond Road, New Castle, NH 3 Beds \| 3.5 Baths \| 3425 Sq. Ft.	$3,417,396

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