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Waterfront Two-Unit Duplex
For Sale
$649,900

7 Mill St, Northborough, MA 01532

Side-by-side residences offer private entrances, flexible DB zoning, and access to town amenities.

Property Size2,070 SF
Price / SF$313.96
Days on Market91

Property Features for 7 Mill St

General Information

Standard status Active
Size 2,070 SF
Total Parking Spaces 6
Property subtype Multi-Family
Zoning DB
Net Operating Income $19,200

Taxes and HOA fees

Annual Taxes $7,733

Building Details

Building Size 2,070 SF
Year Built 1849
Stories 4
Listing Agency: RE/MAX Partners
Listed By: Chris Bernier
Source: Churchillprop
Added: Jun 2 Changed: Aug 31 Last Checked: Aug 31 at 1:10AM

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 RE/MAX Partners

Investment Insights

Based on property information with market context.

This 2,070-square-foot duplex was built in 1849 and contains two side-by-side residences, each with two bedrooms, one bathroom, a living room, and an eat-in kitchen. Separate entrances serve the units, and off-street parking is provided. The property is being sold as-is; some peeling paint may affect FHA loan eligibility.

Set on a 0.52-acre waterfront lot at 7 Mill St, the home occupies a quiet dead-end street in Northborough. Town-center shops, restaurants, and schools are within walking distance. DB zoning is identified for the property, with potential for a home office or small business subject to town verification.

Key Highlights

  • Two‑unit duplex with 2 bedrooms and 1 bath in each residence
  • 2,070 SF building on a 0.52‑acre waterfront lot
  • Private entrances for both side‑by‑side units

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
$27,982
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
4.31%
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%
$559,640 $559.6K
Cap Rate 7%
$399,743 $399.7K
Cap Rate 9%
$310,911 $310.9K
Market Conditions
NOI Build-Up for 2,070 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
$41.0K $19.80/SF
− Vacancy
−$1.0K −$0.49/SF
EGI
$40.0K $19.31/SF
− OpEx
−$12.0K −$5.79/SF
NOI
$28.0K $13.52/SF
Area
Worcester County, MA
Vacancy
2.47%
Lease Rate
$19.80 /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%
$559,640
Cap Rate 7%
$399,743
Cap Rate 9%
$310,911

Alternative Uses

Best Use
Multifamily LT 5
$399.7K
$349.8K – $466.4K (±1% cap)
NOI $27,982 @ 7.0% cap · market cap 4.31%
Second Best
Apartment 5plus
$347.9K
$304.4K – $405.9K (±1% cap)
NOI $24,351 @ 7.0% cap · market cap 3.75%
Theoretical Best
Office A
$706.9K
$618.5K – $824.7K (±1% cap)
NOI $49,481 @ 7.0% cap · market cap 7.61%
Zoning and permitted uses should be independently verified with authorities.

Property Analytics

Current Use

Duplexes

Suggested Use

Top Pick HVAC Service Grocery & Convenience Store Big Box & Wholesale Store (Bike/Boat/Book/etc) Store Furniture & Home Goods Computer & Electronic Repair

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

459
Businesses Nearby

Demographics for 01532, MA

15,741
Population
5,913
Households
2.7
Avg Household Size
43
Median Age
67%
College-Educated
97%
High-School Grad
18.5 sq mi
ZIP Area
851
Density / Sq Mi
$174,358
Median Household Income
$90,816
Median Earnings
$2,087
Median Rent
$598,500
Median Home Value

Market

Vacancy Rate% for Multifamily in Northeast region

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

What type of property is this?
Duplex - Side-by-side residences offer private entrances, flexible DB zoning, and access to town amenities.
Where is this duplex located?
The property is located at 7 Mill St Northborough, MA.
What is the asking price?
The asking price for this property is $649,900.
What are key features of this property?
This property features: Two‑unit duplex with 2 bedrooms and 1 bath in each residence; 2,070 SF building on a 0.52‑acre waterfront lot; Private entrances for both side‑by‑side units
More about this property
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