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Professional Office Building
For Sale
$1,595,000

3 Oak St, Westborough, MA 01581

Well-maintained office building on Route 9 offering flexible space for professional and medical-related uses.

Property Size4,240 SF
Days on Market59

Property Features for 3 Oak St

General Information

Standard status Active
Size 4,240 SF
Class B
Property subtype Office

Additional Details

Highway Access Yes

Building Details

Building Size 4,240 SF
Year Built 2000
Listing Agency: Kelleher & Sadowsky
Listed By: Joe Laursen · License #9571029
Source: Kelleher-sadowsky
Added: Jul 8 Changed: Sep 3 Last Checked: Sep 4 at 5:20AM

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 Kelleher & Sadowsky

Investment Insights

Based on property information with market context.

3 Oak Street is a well-maintained professional office building offering a clean, professional environment and flexible office space suitable for a variety of businesses, including financial services, attorneys, and medical uses.

The property is located along Route 9 and is described as having convenient access to major highways, local amenities, and the downtown area.

This offering is for sale and is positioned for an organization seeking an established office location within a desirable MetroWest community.

Key Highlights

  • Well‑maintained professional office building built in 2000
  • Located along Route 9
  • Flexible office space suitable for professional and medical‑related uses

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
$77,274
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
4.84%
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%
$1,545,480 $1.5M
Cap Rate 7%
$1,103,914 $1.1M
Cap Rate 9%
$858,600 $858.6K
Market Conditions
NOI Build-Up for 4,240 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
$127.2K $30.00/SF
− Vacancy
−$24.2K −$5.70/SF
EGI
$103.0K $24.30/SF
− OpEx
−$25.8K −$6.08/SF
NOI
$77.3K $18.23/SF
Area
Worcester County, MA
Vacancy
19.00%
Lease Rate
$30.00 /SF/Yr
Expense Ratio
25.00%
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%
$1,545,480
Cap Rate 7%
$1,103,914
Cap Rate 9%
$858,600

Alternative Uses

Best Use
Office B
$1.10M
$965.9K – $1.29M (±1% cap)
NOI $77,274 @ 7.0% cap · market cap 4.84%
Second Best
no second resolved use
Theoretical Best
Office A
$1.45M
$1.27M – $1.69M (±1% cap)
NOI $101,353 @ 7.0% cap · market cap 6.35%
Zoning and permitted uses should be independently verified with authorities.

Property Analytics

Current Use

Office buildings

Suggested Use

Top Pick HVAC Service Parking Lot & Garage (Bike/Boat/Book/etc) Store Furniture & Home Goods Barber Shop Electrical Service

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

Lease Details

Yes
Highway access

Location Intelligence

Trade Area within ½ mile

887
Businesses Nearby

Demographics for 01581, MA

21,567
Population
8,407
Households
2.6
Avg Household Size
39
Median Age
66%
College-Educated
96%
High-School Grad
20.6 sq mi
ZIP Area
1,047
Density / Sq Mi
$134,474
Median Household Income
$82,045
Median Earnings
$2,038
Median Rent
$637,900
Median Home Value

Market

Vacancy Rate% for Office in Northeast region

13.1% 2019
15.4% 2020
17.6% 2021
19.1% 2022
20.2% 2023
20.9% 2024
19.9% 2025
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Frequently Asked Questions

What type of property is this?
Office building - Well-maintained office building on Route 9 offering flexible space for professional and medical-related uses.
Where is this office building located?
The property is located at 3 Oak St Westborough, MA.
What is the asking price?
The asking price for this property is $1,595,000.
What are key features of this property?
This property features: Well‑maintained professional office building built in 2000; Located along Route 9; Flexible office space suitable for professional and medical‑related uses
More about this property
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