453 E Putnam Ave APT 4BCos CobCT06807



INVESTMENT ANALYSIS
Investment Verdict
Appreciation PlayYield and appreciation often trade off, and at 453 E Putnam Ave APT 4B, Cos Cob, CT, 06807 in Cos Cob the bet is firmly on appreciation. Rental yield 5.97%. The 5.97% gross yield on a $844,900 price is below income-first thresholds, but 5%/yr value growth projects $233,430 in equity by year five. Ziffy Mortgage's non-U.S. DSCR mortgage (1.11) finances the acquisition on rental income alone. A larger down payment (30–35%) reduces monthly debt service and tightens the spread. Total projected cumulative return: $223,479.
| This Property | City Avg | |
|---|---|---|
| Gross Rental Yield | 6% | 5.2% |
| Monthly Cash Flow | $(1,541) | $1,500 |
City averages based on Cos Cob market data in our database. Property projections are estimates.
DSCR Loan Qualification
| Monthly Rental Income | $4,200 |
| Total Monthly Debt Service | $5,405 |
| DSCR Ratio | 0.78x |
Ziffy Mortgage typically prefers a DSCR of 1.0+, but in some cases you may qualify with a DSCR below 1. To explore if this deal qualifies for an investment mortgage, book time with your loan officer →
Estimates assume 6.0% rate / 30-yr fixed, 30% down, 1% tax, 0.5% insurance. Not a commitment to lend.
Condo
Built in 1991
N/A lot
$N/A/sqft
No HOA
Neighborhood Data
Neighborhood data shown for ZIP Code: 06807, Cos Cob, CT area.
Housing Distribution
Housing Statistics
| Category | Value |
|---|---|
| Total HU (Housing Units) | 2,891 (100%) |
| Owner Occupied HU | 2,032 (70.3%) |
| Renter Occupied HU | 709 (24.5%) |
| Vacant Housing Units | 150 ( 5.2%) |
| Median Home Value | $1,357,004 |
| Average Home Value | $1,453,123 |
Housing Distribution
Address Breakdown
Residential
2,859
Single Family
2,810
Multi-Family
49
Businesses
349



Nearby investment properties with comparable rents
Nearby investment properties with comparable prices

Ziffy AI Summary
A quick, investor-focused snapshot highlighting income strength, yield potential.
| Key metrics | Value |
|---|---|
| Price | $399,900 |
| Est. Rent | $3,200/mo |
| ROI | 18% |
- Attractive rent-to-price ratio for income stability
- Good fit for DSCR financing with healthy coverage


Condo
Built in 1991
N/A lot
$N/A/sqft
No HOA
Neighborhood Data
Neighborhood data shown for ZIP Code: 06807, Cos Cob, CT area.
Housing Distribution
Housing Statistics
| Category | Value |
|---|---|
| Total HU (Housing Units) | 2,891 (100%) |
| Owner Occupied HU | 2,032 (70.3%) |
| Renter Occupied HU | 709 (24.5%) |
| Vacant Housing Units | 150 ( 5.2%) |
| Median Home Value | $1,357,004 |
| Average Home Value | $1,453,123 |
Housing Distribution
Address Breakdown
Residential
2,859
Single Family
2,810
Multi-Family
49
Businesses
349
Nearby investment properties with comparable rents
Nearby investment properties with comparable prices



Listed by: Wendy Lynch • Brown Harris Stevens Connecticut, LLC
Mls Name: Greenwich MLS, Inc.
Mls Provider:
Mls ID: #124564
Disclaimer: Listing data courtesy of Greenwich MLS. IDX information is provided exclusively for consumers personal, non-commercial use, that it may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data is deemed reliable but is not guaranteed accurate by the MLS.








