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Duplex with Two-Bay Garage
For Sale
$749,000

21-23 North Groton Street, Nashua, NH 03060

Fully rented duplex with separate utilities, fenced outdoor space, and multiple private outdoor areas.

Property Size2,408 SF
Price / SF$311.05
Days on Market118

Property Features for 21-23 North Groton Street

General Information

Standard status Active
Size 2,408 SF
Property subtype Multi Family
Zoning RB

Taxes and HOA fees

Annual Taxes $9,021

Amenities

Curbside
Mini Split
Natural Gas, Hot Air, Hot Water, Mini Split, Boiler
Yes
Hardwood
Gas Water Heater
2
Walk-up
Concrete Floor, Full, Unfinished
10
Architectural Shingle
Green
Wood Frame, Block Exterior

Building Details

Year Built 1920
Listing Agency: BHHS Verani Concord
Listed By: Donald Goudreau
Source: Compass
Added: May 5 Changed: Aug 29 Last Checked: May 8 at 5:56AM

Displayed information is deemed reliable but is not guaranteed and should be independently verified. All listing content including descriptions, pricing, images are the copyrighted material of BHHS Verani Concord

Investment Insights

Based on property information with market context.

Built in 1920, this duplex includes two residential units, each configured with 3 bedrooms and 1 bathroom. The property is fully rented and includes a large two-bay block garage, a fully fenced yard, and separate utility systems for each unit. Outdoor features include a porch serving one unit and both a deck and porch serving the other.

The property is located in downtown Nashua at 21-23 North Groton St. It has a BikeScore of 53, classified as Bikeable, and a WalkScore of 58, classified as Somewhat Walkable.

Key Highlights

  • Two‑unit property with 3 bedrooms and 1 bathroom in each unit
  • Large 2‑bay block garage included
  • Separate utilities for each unit

Financial Insights

Estimated NOI and Cap Rate

NOI = area × lease_rate × (100 − vacancy) / 100 × (1 − expense_ratio). Net Operating Income — what the owner takes home each year before mortgage payments and income tax. Effective rent (asking rent minus vacancy losses) minus operating costs (taxes, insurance, maintenance, management).
NOI / Yr
$35,362
Cap rate = NOI / list price × 100. Capitalization rate — annual return on a fully cash purchase, before financing. NOI divided by price. Higher means more income per dollar invested, but usually also more risk or older condition. 5–8% is typical for stabilized commercial property; double digits often signal distressed deals.
Cap Rate
4.72%
Suggested Prices Based on Cap Rates Cap rates vary significantly by property type, market, and asset quality. Typical U.S. stable-market ranges: Multifamily — 4.5% to 6.5% (Class A in primary markets often sub-5%; Class C in secondary markets 6%+) Industrial / Logistics — 5.0% to 7.0% (compressed heavily in recent years due to e-commerce demand) Office — 6.5% to 9%+ (wide spread post-2020; CBD Class A vs. suburban Class B varies dramatically) Retail — 5.5% to 8.5% (grocery-anchored on the low end, unanchored strip centers higher) Hospitality / Hotels — 7.5% to 10%+ (higher due to operational risk) Self-Storage — 5.5% to 7.5% Medical Office — 6.0% to 7.5% Net Lease (single tenant, credit) — 5.0% to 7.0% depending on tenant credit and lease term Rules of thumb: Primary markets (NYC, SF, LA, Boston, DC) trade at lower cap rates than secondary/tertiary markets, often by 100–200 bps (bps, aka basis points; 1 bp = 0.01%). Class A assets trade ~50–150 bps tighter than Class B, and Class B tighter than Class C. Cap rates move inversely with price — a lower cap rate means a higher price for the same NOI. Spread to the 10-year Treasury is a common benchmark; historically 200–400 bps over the 10-year.
Cap Rate 5%
$707,240 $707.2K
Cap Rate 7%
$505,171 $505.2K
Cap Rate 9%
$392,911 $392.9K
Market Conditions
NOI Build-Up for 2,408 SF Vacancy — income lost from leasable area expected to sit empty during the year, subtracted from gross rent. EGI (Effective Gross Income) — gross rent minus vacancy losses, the realistic income before paying operating costs. OpEx (Operating Expenses) — recurring costs to operate the property (property tax, insurance, utilities, maintenance, management); excludes financing and capital improvements. NOI (Net Operating Income) — income a property generates after operating costs but before financing and taxes.
Gross rent
$53.5K $22.20/SF
− Vacancy
−$2.9K −$1.22/SF
EGI
$50.5K $20.98/SF
− OpEx
−$15.2K −$6.29/SF
NOI
$35.4K $14.69/SF
Area
Hillsborough County, NH
Vacancy
5.50%
Lease Rate
$22.20 /SF/Yr
Expense Ratio
30.00%
Simulate Cap Rate and NOI
Suggested Prices Based on Cap Rates Cap rates vary significantly by property type, market, and asset quality. Typical U.S. stable-market ranges: Multifamily — 4.5% to 6.5% (Class A in primary markets often sub-5%; Class C in secondary markets 6%+) Industrial / Logistics — 5.0% to 7.0% (compressed heavily in recent years due to e-commerce demand) Office — 6.5% to 9%+ (wide spread post-2020; CBD Class A vs. suburban Class B varies dramatically) Retail — 5.5% to 8.5% (grocery-anchored on the low end, unanchored strip centers higher) Hospitality / Hotels — 7.5% to 10%+ (higher due to operational risk) Self-Storage — 5.5% to 7.5% Medical Office — 6.0% to 7.5% Net Lease (single tenant, credit) — 5.0% to 7.0% depending on tenant credit and lease term Rules of thumb: Primary markets (NYC, SF, LA, Boston, DC) trade at lower cap rates than secondary/tertiary markets, often by 100–200 bps (bps, aka basis points; 1 bp = 0.01%). Class A assets trade ~50–150 bps tighter than Class B, and Class B tighter than Class C. Cap rates move inversely with price — a lower cap rate means a higher price for the same NOI. Spread to the 10-year Treasury is a common benchmark; historically 200–400 bps over the 10-year.
Cap Rate 5%
$707,240
Cap Rate 7%
$505,171
Cap Rate 9%
$392,911

Alternative Uses

Best Use
Multifamily LT 5
$505.2K
$442.0K – $589.4K (±1% cap)
NOI $35,362 @ 7.0% cap · market cap 4.72%
Second Best
Apartment 5plus
$468.0K
$409.5K – $546.1K (±1% cap)
NOI $32,763 @ 7.0% cap · market cap 4.37%
Theoretical Best
Specialty Retail
$4.41M
$3.86M – $5.15M (±1% cap)
NOI $308,826 @ 7.0% cap · market cap 41.23%
Zoning and permitted uses should be independently verified with authorities.

Property Analytics

Current Use

Duplexes

Suggested Use

Top Pick Garden Center (Bike/Boat/Book/etc) Store Pet Grooming Service Carpet & Flooring Store Butcher Pet Store

Score = modeled unmet demand for each use within ~1 mi (higher = bigger opportunity). Zoning and permitted uses should be independently verified with local authorities.

Location Intelligence

Trade Area within ½ mile

1,444
Businesses Nearby

Demographics for 03060, NH

31,251
Population
13,003
Households
2.4
Avg Household Size
37
Median Age
31%
College-Educated
88%
High-School Grad
6.6 sq mi
ZIP Area
4,735
Density / Sq Mi
$78,068
Median Household Income
$44,628
Median Earnings
$1,539
Median Rent
$338,700
Median Home Value

Market

Vacancy Rate% for Multifamily in Northeast region

4% 2022
4.6% 2023
5.3% 2024
5.6% 2025
Rey
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Frequently Asked Questions

What type of property is this?
Duplex - Fully rented duplex with separate utilities, fenced outdoor space, and multiple private outdoor areas.
Where is this duplex located?
The property is located at 21-23 North Groton Street Nashua, NH.
What is the asking price?
The asking price for this property is $749,000.
What are key features of this property?
This property features: Two‑unit property with 3 bedrooms and 1 bathroom in each unit; Large 2‑bay block garage included; Separate utilities for each unit
More about this property
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