Triplex with Basement
For Sale
$1,275,000
21 Saint Marks Rd, Boston, MA 02124
Three residential units include decks, laundry access, private storage, and off-street parking.
Property Size3,426 SF
Price / SF$372.15
Days on Market63
Property Features for 21 Saint Marks Rd
General Information
Standard status
Active
Size
3,426 SF
Total Parking Spaces
1
Property subtype
Multi-Family
Zoning
R3
Taxes and HOA fees
Annual Taxes
$10,545
Building Details
Building Size
3,426 SF
Year Built
1905
Stories
3
Listing Agency:
REMAX Executive Realty
(978) 578-5013
Listed By:
Chris Bernier
(978) 578-5013
Source:
Churchillprop
Added: Jul 1
Changed: Aug 31
Last Checked: Aug 31 at 2:19PM
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 REMAX Executive Realty
Investment Insights
Based on property information with market context.
This triplex contains 3,426 square feet across three residential units. Each unit is configured with 5 rooms, 3 bedrooms, and 1 full bath. Front and rear decks serve every unit, while the full basement provides laundry access and private storage. A driveway supplies off-street parking, and the property includes a generously sized backyard.
Built in 1905 and zoned R3, the property is located 0.6 miles from the Shawmut MBTA Red Line. The setting also provides access to Route 93, downtown Boston, Quincy Center, and East Milton Square.
Built in 1905 and zoned R3, the property is located 0.6 miles from the Shawmut MBTA Red Line. The setting also provides access to Route 93, downtown Boston, Quincy Center, and East Milton Square.
Key Highlights
- Three units, each with 5 rooms, 3 bedrooms, and 1 full bath
- 3,426‑square‑foot triplex built in 1905
- Front and rear decks included with every 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
$86,573
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
6.79%
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%
$1,731,460
$1.7M
Cap Rate 7%
$1,236,757
$1.2M
Cap Rate 9%
$961,922
$961.9K
Market Conditions
NOI Build-Up for 3,426 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
$129.5K $37.80/SF
− Vacancy
−$5.8K −$1.70/SF
EGI
$123.7K $36.10/SF
− OpEx
−$37.1K −$10.83/SF
NOI
$86.6K $25.27/SF
Area
Boston, MA
Vacancy
4.50%
Lease Rate
$37.80 /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%
$1,731,460
Cap Rate 7%
$1,236,757
Cap Rate 9%
$961,922
Alternative Uses
Best Use
Multifamily LT 5
$1.24M
$1.08M – $1.44M
NOI $86,573 @ 7.0% cap · market cap 6.79%
Second Best
Apartment 5plus
$1.15M
$1.01M – $1.34M
NOI $80,484 @ 7.0% cap · market cap 6.31%
Theoretical Best
Office A
$2.57M
$2.24M – $2.99M
NOI $179,577 @ 7.0% cap · market cap 14.08%
Zoning and permitted uses should be independently verified with authorities.
Property Analytics
Property Profile
Current Use
Location Intelligence
Trade Area within ½ mile
1,848
Businesses Nearby
Explore this area
Business Placement
Demographics for 02124, MA
50,972
Population
21,264
Households
2.4
Avg Household Size
36
Median Age
31%
College-Educated
85%
High-School Grad
3.0 sq mi
ZIP Area
16,991
Density / Sq Mi
$79,168
Median Household Income
$43,483
Median Earnings
$1,783
Median Rent
$607,200
Median Home Value
Market
Vacancy Rate% for Multifamily in Northeast region
Questions? Ask Rey
Realmo’s AI knows this listing — price, zoning, demand, history. Ask anything.
Frequently Asked Questions
What type of property is this?
Triplex - Three residential units include decks, laundry access, private storage, and off-street parking.
Where is this triplex located?
The property is located at 21 Saint Marks Rd Boston, MA.
What is the asking price?
The asking price for this property is $1,275,000.
What are key features of this property?
This property features: Three units, each with 5 rooms, 3 bedrooms, and 1 full bath; 3,426‑square‑foot triplex built in 1905; Front and rear decks included with every unit
