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$685,000

Under Contract
421 Marlborough St Apt 4, Boston, MA 02115
2 Beds
1 Bath
690 Square Feet
0.02 Acres Lot
Built in 1899
Under Contract
Units n/a
Checked: 23 hours ago
Updated: Oct 29, 2025 at 10:08AM

Investment Summary


Monthly Cash Flow
-$1,698
Cap Rate
2.7%
Cash-on-Cash Return
-12.9%
Debt Coverage Ratio
0.48
Internal Rate of Return (5 years)
-8.5%

Property Description


0.02 Acres Lot
Built in 1899
Under Contract
Units n/a

Welcome to this two-bedroom, one bathroom condo located on Marlborough St—a rare opportunity to own a piece of Boston’s architectural history in the heart of Back Bay. Step inside to be greeted by high ceilings, a sun-filled bay window, and hardwood floors throughout. The spacious living area features beautiful woodwork and trim. The updated kitchen boasts granite countertops, stainless steel appliances, and ample cabinetry. Each bedroom offers generous space and custom closets and cabinetry. There's plenty of built in storage for all your belongings in each bedroom-- the storage space here is abundant. ConvenientIn unit laundry. Located just blocks from the Public Garden and steps from Newbury St, Commonwealth Ave Mall, and the Charles River Esplanade, this home offers an unbeatable location in one of Boston’s most prestigious neighborhoods. Great food and shopping so close by. Move right in or update as you see fit! **SOME PHOTOS VIRTUALLY STAGED**

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Location


Property Details


Parking

  • Details: On Street
  • Garage Spaces: 0
  • Spaces Total: 0

Bedroom Information

  • # of Bedrooms: 2

Bathroom Information

  • # of Baths (Full): 1
  • # of Baths (Total): 1.0

Interior Features

  • # of Rooms: 4
  • # of Stories: 1
  • Basement: Yes

Exterior Features

  • Exterior Walls Materials: Brick
  • Roof Type: Flat
  • Roof Material: Rubber

HOA

  • Has HOA: Yes
  • HOA Fee: $526/monthly

Land Information

  • Land Use: Residential
  • Land Use Subtype: Condominium Unit

Lot Information

  • Parcel ID: CBOSW:05P:03852S:010
  • Lot Size: 690 sqft

Property Information

  • Property Type: Condominium
  • Year Built: 1899

Tax Information

  • Annual Tax: $8,273

Utilities

  • Water & Sewer: Public
  • Heating: Hot Water
  • Cooling: Window Unit(s)

Location

  • County: Suffolk

Investment Summary


Monthly Cash Flow
-$1,698
Cap Rate
2.7%
Cash-on-Cash Return
-12.9%
Debt Coverage Ratio
0.48
Internal Rate of Return (5 years)
-8.5%

Purchase Details

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Purchase price:
$685,000
Amount financed:
-$548,000
Down payment:
$137,000
Closing costs:
$20,550
Rehab costs:
$0
Initial cash invested:
$157,550
Square feet:
690
Cost per square foot:
$993
Monthly rent per square foot:
$5.80

Financing Details

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Loan amount:
$548,000
Loan to value ratio:
80.0%
Loan type:
Amortizing
Term:
30 years
Interest rate:
5.875%
Principal & interest:
$3,242
Property tax:
$689
Insurance:
$280
Private mortgage insurance (PMI):
$0
Monthly payment:
$4,211

Operating Income

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% Rent Monthly Yearly
Gross rent:
$4,000 $48,000
Vacancy loss: (6%)
6% -$240 -$2,880
Operating income:
$3,760 $45,120

Operating Expenses


% Rent Monthly Yearly
Property taxes: (17%)
17%-$689-$8,273
Insurance: (7%)
7%-$280-$3,360
Property management: (8%)
8%-$320-$3,840
Repairs & maintenance: (5%)
5%-$200-$2,400
Capital expenditures: (5%)
5%-$200-$2,400
HOA fees: (13%)
13%-$527-$6,324
Total operating expenses: (55%)
55%-$2,216-$26,597

Cash Flow


Monthly Yearly
Net operating income:
$1,544 $18,528
Mortgage payments:
-$3,242 -$38,904
Cash flow:
-$1,698 -$20,376