Search
Waltham Investment Property with Expansion Potential
For Sale
$799,000

11 Derby Street, Waltham, MA 02453

Income-producing property in Waltham with redevelopment and expansion possibilities.

Property Size1,901 SF
Price / SF$420.31
Days on Market306

Property Features for 11 Derby Street

General Information

Standard status Active
Size 1,901 SF
Total Parking Spaces 6
Property subtype Multi-Family
Zoning RB

Taxes and HOA fees

Annual Taxes $8,033

Building Details

Building Size 1,901 SF
Year Built 1900
Stories 3
Listing Agency: Coldwell Banker Realty - Waltham
Listed By: Lisa Lyons
Source: Churchillprop
Added: Dec 3, 2025 Changed: Oct 1 Last Checked: Oct 4 at 8:11AM

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 Coldwell Banker Realty - Waltham

Investment Insights

Based on property information with market context.

This property presents a builder and investor opportunity in the desirable South Side of Waltham. Currently configured as an income-producing investment property, it features two large 1-bedroom units. The property is located in an RB zoning district, offering Old Lot Opinion flexibility. This allows for a 1647 sq ft buildable footprint and reduced side-yard setback requirements, according to town guidelines. The existing two-family structure has potential for redevelopment, condo conversion, or expansion, including the possibility of an accessory dwelling unit (ADU), all subject to municipal approvals. The location is considered very bikeable with a bike score of 75 and a walker's paradise with a walk score of 90. Transit options are available, indicated by a transit score of 43.

Key Highlights

  • Prime redevelopment opportunity in Waltham's desirable South Side.
  • RB zoning with Old Lot Opinion flexibility allows for a 1647 sq ft buildable footprint.
  • Expansion potential, including possible accessory dwelling unit (ADU), subject to approvals.

Financial Insights

Estimated NOI and Cap Rate

NOI / Yr
$40,226
Cap Rate
5.03%
Suggested Prices Based on Cap Rates
Cap Rate 5%
$804,520 $804.5K
Cap Rate 7%
$574,657 $574.7K
Cap Rate 9%
$446,956 $447.0K
Market Conditions
NOI Build-Up for 1,901 SF
Gross rent
$60.5K $31.80/SF
− Vacancy
−$3.0K −$1.57/SF
EGI
$57.5K $30.23/SF
− OpEx
−$17.2K −$9.07/SF
NOI
$40.2K $21.16/SF
Area
Middlesex County, MA
Vacancy
4.94%
Lease Rate
$31.80 /SF/Yr
Expense Ratio
30.00%
Simulate Cap Rate and NOI
Suggested Prices Based on Cap Rates
Cap Rate 5%
$804,520
Cap Rate 7%
$574,657
Cap Rate 9%
$446,956

Alternative Uses

Best Use
Multifamily LT 5
$574.7K
$502.8K – $670.4K (±1% cap)
NOI $40,226 @ 7.0% cap · market cap 5.03%
Second Best
Apartment 5plus
$540.3K
$472.8K – $630.4K (±1% cap)
NOI $37,823 @ 7.0% cap · market cap 4.73%
Theoretical Best
Office A
$1.13M
$984.7K – $1.31M (±1% cap)
NOI $78,777 @ 7.0% cap · market cap 9.86%
Zoning and permitted uses should be independently verified with authorities.

Property Analytics

Unlock full access to Insights Subscribe to Realmo Intelligence
Open Analytics

Current Use

Duplexes

Suggested Use

Top Pick Pharmacy Law Firm (Bike/Boat/Book/etc) Store Pet Grooming Service Cafe & Coffee Shop Florist

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

1,020
Businesses Nearby

Demographics for 02453, MA

31,854
Population
13,163
Households
2.4
Avg Household Size
34
Median Age
59%
College-Educated
92%
High-School Grad
3.6 sq mi
ZIP Area
8,848
Density / Sq Mi
$114,029
Median Household Income
$58,036
Median Earnings
$2,063
Median Rent
$666,300
Median Home Value
Check the figures for this property Cap Rate, Value Estimation, Potential NOI and more
View Realmo Analytics

Market

Vacancy Rate% for Multifamily in Northeast region

4% 2022
4.6% 2023
5.3% 2024
5.6% 2025
Rey
Questions? Ask Rey
Realmo’s AI knows this listing — price, zoning, demand, history. Ask anything.

Frequently Asked Questions

What type of property is this?
Duplex - Income-producing property in Waltham with redevelopment and expansion possibilities.
Where is this duplex located?
The property is located at 11 Derby Street Waltham, MA.
What is the asking price?
The asking price for this property is $799,000.
What are key features of this property?
This property features: Prime redevelopment opportunity in Waltham's desirable South Side.; RB zoning with Old Lot Opinion flexibility allows for a **1647 sq ft buildable footprint**.; Expansion potential, including possible accessory dwelling unit (ADU), subject to approvals.
More about this property
Thanks! Your message was sent.
Error! Your message wasn't sent.
Please enter your name
Please enter email
Please enter the email in the correct format
Please enter phone
Please enter the number in the correct format
Please enter message
Why this one?
Saved
Reason not saved — we won't ask again