Renovated Duplex with Private
New
For Sale
$825,000
133 Rock Spring Rd, Stamford, CT 06906
Two separate residences offer a three-bedroom layout alongside a compact one-bedroom unit.
Property Size1,702 SF
Days on Market4
Property Features for 133 Rock Spring Rd
General Information
Standard status
Active
Size
1,702 SF
Property subtype
Multi Family
Site & Location
Highway Access
Yes
Public Transit
Yes
Units
Unit Mix
1 x 3BR/1.5BA, 1 x 1BR/1BA
Multifamily Units
2
Building Details
Building Size
1,702 SF
Year Built
1920
Listing Agency:
Keller Williams Realty
(203) 803-9443
Listed By:
Herman Huang
(203) 803-9443
Source:
Elliman
Added: Aug 26
Changed: Aug 28
Last Checked: Aug 28 at 11:59AM
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 Keller Williams Realty
Investment Insights
Based on property information with market context.
This duplex, built in 1920, contains two renovated residences completed in 2023. The first unit has three bedrooms and one-and-a-half baths, while the second provides one bedroom and one bath. The configuration supports separate occupancy within a single residential property.
Outdoor space includes a private backyard suitable for grilling, gardening, and everyday use. The property is near I-95, Merritt 15, rail service, and downtown Stamford, placing transportation and central-city destinations within the surrounding area. Walk Score is 80, Bike Score is 61, and Transit Score is 52.
Outdoor space includes a private backyard suitable for grilling, gardening, and everyday use. The property is near I-95, Merritt 15, rail service, and downtown Stamford, placing transportation and central-city destinations within the surrounding area. Walk Score is 80, Bike Score is 61, and Transit Score is 52.
Key Highlights
- Two‑family duplex with 3‑bedroom and 1‑bedroom units
- Both units renovated in 2023
- Unit 1 includes 3 bedrooms and 1.5 baths
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
$32,750
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
3.97%
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%
$655,000
$655.0K
Cap Rate 7%
$467,857
$467.9K
Cap Rate 9%
$363,889
$363.9K
Market Conditions
NOI Build-Up for 1,702 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
$50.0K $29.40/SF
− Vacancy
−$3.3K −$1.91/SF
EGI
$46.8K $27.49/SF
− OpEx
−$14.0K −$8.25/SF
NOI
$32.8K $19.24/SF
Area
Stamford, CT
Vacancy
6.50%
Lease Rate
$29.40 /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%
$655,000
Cap Rate 7%
$467,857
Cap Rate 9%
$363,889
Alternative Uses
Best Use
Multifamily LT 5
$467.9K
$409.4K – $545.8K
NOI $32,750 @ 7.0% cap · market cap 3.97%
Second Best
Apartment 5plus
$418.5K
$366.2K – $488.2K
NOI $29,292 @ 7.0% cap · market cap 3.55%
Theoretical Best
Office A
$615.4K
$538.5K – $718.0K
NOI $43,078 @ 7.0% cap · market cap 5.22%
Zoning and permitted uses should be independently verified with authorities.
Property Analytics
Property Profile
Current Use
Lease Details
2
Residential units
Yes
Highway access
Location Intelligence
Trade Area within ½ mile
1,554
Businesses Nearby
Explore this area
Business Placement
Demographics for 06906, CT
9,902
Population
3,727
Households
2.7
Avg Household Size
38
Median Age
47%
College-Educated
80%
High-School Grad
1.3 sq mi
ZIP Area
7,617
Density / Sq Mi
$91,710
Median Household Income
$45,518
Median Earnings
$2,207
Median Rent
$576,200
Median Home Value
Market
Vacancy Rate% for Multifamily in Northeast region
Questions? Ask Rey
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Frequently Asked Questions
What type of property is this?
Duplex - Two separate residences offer a three-bedroom layout alongside a compact one-bedroom unit.
Where is this duplex located?
The property is located at 133 Rock Spring Rd Stamford, CT.
What is the asking price?
The asking price for this property is $825,000.
What are key features of this property?
This property features: Two‑family duplex with 3‑bedroom and 1‑bedroom units; Both units renovated in 2023; Unit 1 includes 3 bedrooms and 1.5 baths
