Seven-Bedroom
New
For Sale
$1,249,000
6-8 Marmion St, Boston, MA 02130
Residential Income, Boston, MA
Property Size2,902 SF
Lot Size0.06 Acres
Price / SF$430.39
Days on Market4
Property Features for 6-8 Marmion St
General Information
Property type
Residential Multi Family
Property subtype
Other
Zoning
R3
Bedrooms
7
Bathrooms
3
Full bathrooms
3
Rooms
Bedroom 6, Bathroom 3, Bedroom 2, Bedroom 1, Bedroom 5, Bedroom 4, Bedroom 7, Bathroom 1, Bathroom 2, Bedroom 3
Directions
Washington Street to Montebello Road to Marmion St (One way)
Subdivision
Jamaica Plain
Standard status
Active
APN
W:11 P:02100 S:000,1350595
Size
2,902 SF
Lot size
0.06 Acres
Taxes and HOA fees
Tax Year
2026
Tax Annual Amount
10379
Building Details
Year built
1900
Floors in Building
3
Number of units
2
Listing Agency:
Keller Williams Realty Evolution
(781) 395-5600
Listed By:
Keller Williams Realty Evolution
(978) 927-8700
Added: Sep 30
Changed: Oct 2
Last Checked: Oct 3 at 2:06AM
MLS# 73584438
Copyright © 2026 MLS Property Information Network Inc. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.
Investment Insights
Based on property information with market context.
This R3-zoned duplex in Boston contains 2,902 square feet, with seven bedrooms and three full bathrooms. Built in 1900, the property occupies a 0.0603-acre lot. Its existing configuration provides a substantial residential layout, while any changes to the arrangement would be subject to applicable zoning and approvals.
The property is near Green Street Station on the MBTA Orange Line and Flaherty Park. It is situated between the Centre Street and Washington Street business corridors, with Jamaica Pond, the Arnold Arboretum, and Sam Adams Brewery also identified among nearby destinations.
The property is near Green Street Station on the MBTA Orange Line and Flaherty Park. It is situated between the Centre Street and Washington Street business corridors, with Jamaica Pond, the Arnold Arboretum, and Sam Adams Brewery also identified among nearby destinations.
Key Highlights
- Seven bedrooms and three full bathrooms
- 2,902 square feet on a 0.0603‑acre lot
- Built in 1900
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
$73,332
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
5.87%
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%
$1,466,640
$1.5M
Cap Rate 7%
$1,047,600
$1.0M
Cap Rate 9%
$814,800
$814.8K
Market Conditions
NOI Build-Up for 2,902 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
$109.7K $37.80/SF
− Vacancy
−$4.9K −$1.70/SF
EGI
$104.8K $36.10/SF
− OpEx
−$31.4K −$10.83/SF
NOI
$73.3K $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%
$1,466,640
Cap Rate 7%
$1,047,600
Cap Rate 9%
$814,800
Alternative Uses
Best Use
Multifamily LT 5
$1.05M
$916.7K – $1.22M
NOI $73,332 @ 7.0% cap · market cap 5.87%
Second Best
Apartment 5plus
$973.9K
$852.2K – $1.14M
NOI $68,174 @ 7.0% cap · market cap 5.46%
Theoretical Best
Office A
$2.17M
$1.90M – $2.54M
NOI $152,111 @ 7.0% cap · market cap 12.18%
Zoning and permitted uses should be independently verified with authorities.
Property Analytics
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Open Analytics
Current Use
Location Intelligence
Trade Area within ½ mile
1,968
Businesses Nearby
Explore this area
Business Placement
Demographics for 02130, MA
38,284
Population
18,802
Households
2
Avg Household Size
36
Median Age
73%
College-Educated
94%
High-School Grad
3.5 sq mi
ZIP Area
10,938
Density / Sq Mi
$130,533
Median Household Income
$73,238
Median Earnings
$2,434
Median Rent
$763,700
Median Home Value
Check the figures for this property
Cap Rate, Value Estimation, Potential NOI and more
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Market
Vacancy Rate% for Multifamily in Northeast region
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Frequently Asked Questions
What type of property is this?
Duplex - R3-zoned property offers 2,902 square feet across a seven-bedroom, three-bathroom layout.
Where is this duplex located?
The property is located at 6-8 Marmion St Boston, MA.
What is the asking price?
The asking price for this property is $1,249,000.
What are key features of this property?
This property features: Seven bedrooms and three full bathrooms; 2,902 square feet on a 0.0603‑acre lot; Built in 1900
