Likely sold or withdrawnWe last saw this listing 54 days ago. It may no longer be available — treat these numbers as a reference and confirm with the listing agent before acting.
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3 BED CONDOListed 76d ago
3-bed condo investor view
636 Green St Unit 636, Cambridge, MA 02139 · 1,414 sqft · $1,033/sqft
No rent comparables — estimate is a rule-of-thumb fallback, not market data. Verify the rent locally before offering.
Property research tool — not a regulated financial service. Numbers are point-in-time estimates; how we decide →
Monthly cashflow
−$5K/mo
You top up $5K/mo
Price
$1.46M
No local sold comps to compare
Return · IRR
—
Not modelled
Cash to get in
$504K
Deposit + fees + refurb
Return before costson price3.69%5-yr return on cash -61%Rent est. $4,486 ($4,207–$4,784)
How we define each return:On price — gross yield = annual rent ÷ purchase price.On cost — net yield ÷ total project cost (price + refurb + fees).On cash — cash-on-cash & ROI ÷ the actual cash you put in (deposit + costs).
Listing seen …
What-if calculator
Edit any input — outputs recalc live
Buy-to-Let. Standard rental on an Assured Shorthold Tenancy. Single household, market rent, paid monthly direct to landlord (or via agent). (hover any strategy tab for pros + cons)
Offer ($)
Monthly rent ($)
Local comp range: $4,207–$4,784/mo · n=52
Financing
DepositYour cash in — the rest is the mortgage25% · $365,000
5%100% (cash buy)
Standard 75% LTV for rental
Mortgage rate5y fixed7.0%
3.0%9.0%
5-year fixed (market average) — 7.00% (as of 2026-05).
Mortgage term (years)
Stress rate8.0%
5.0%9.0%
Fed base + 2pp stress (8.0%)
Acquisition costs
Refurb ($)
Tiered estimate (full refurb): $69,530–$130,090 range from $/sqft + per-room model
Legal + survey ($)
Standard house — $2,400 legal + $1,300 survey
Mortgage fees ($)
2% product fee on $1,095,000 loan + $1,000 booking fee
Running costs
Management10%
0%20%
Typical rental agency rate
Void weeks
Typical voids for rental
Insurance ($/mo)
Typical building+landlord cover for $400K+
Maintenance ($/mo)
Default $67/mo — type unknown
Result · Rent it out
Monthly profit
-$5,254
after mortgage, operating costs & tax
Rent in$4,486/mo
$4,313Collected
$4,313/mo actually reaches you — the other $173 is lost to voids: the weeks a rental sits empty between tenants, when no rent comes in.
Where it goes
$7,285Mortgage$2,455Costs
Outgoings exceed rent — you top up $5,255/mo
Mortgage$7,285
Costs$2,455
Management$449
Maintenance$67
Insurance$40
CapEx reserve$224
Voids + council tax$12
Ltd co. accounts$104
Tax—
Shortfall−$5,255
Returns
Return before costson price3.69%
Cash returnon cash-12.50%
Gross margin$1,858
Cash needed$504,318
Monthly profit paybackn/a (monthly loss)
Data confidence
Lender stress test
Rent-covers-mortgage check0.35
Rent-covers-mortgage check FAIL (need ≥ 1.00)
Year-by-year Monthly profit (5-yr horizon)
Net Monthly profit after tax. Rent + costs compound at their growth rates; mortgage principal amortises year-by-year for repayment loans.
Mortgage paydownRent profitbefore price growth
Full year-by-year breakdown
Year
Gross Rent
Op Costs
Mortgage
Equity Built
Tax
Net
Cumulative
Year 1
$53,832
$29,465
$87,421
$0
$0
-$63,054
-$63,054
Year 2
$55,447
$30,349
$87,421
$0
$0
-$62,323
-$125,377
Year 3
$57,110
$31,260
$87,421
$0
$0
-$61,570
-$186,947
Year 4
$58,824
$32,198
$87,421
$0
$0
-$60,795
-$247,742
Year 5
$60,588
$33,163
$87,421
$0
$0
-$59,996
-$307,737
Year 5 disposal
Disposal gain (gross)-$21,051
CGT$0
Net Disposal proceeds$1,571,659
What we verified
What we verified
2 total · click to expand
20002 ok · 0 caution · 0 fail · 0 unknown
Investor
Tenant profileFamily let
Tenant profilelikely cohort3 bed
Primary profile
Family let
Nearest university
for student-let assessment
University of Glasgow · 4877.6 km
Reason
3-bed house in a suburban area — family-let demand dominates; check local school catchment ratings.
Likely sold or withdrawnWe last saw this listing 54 days ago. It may no longer be available — treat these numbers as a reference and confirm with the listing agent before acting.
7/100
Marginal
3.69% — verify the rent + comps locally.
3.69% Return before costs — around the area average for this property type.
Monthly profit −$5,254/mo at the default 25% deposit @ 5.5% — open the calculator to stress-test.
Monthly cashflow
−$5K/mo
You top up $5K/mo
Price
$1.46M
No local sold comps to compare
Return · IRR
—
Not modelled
Cash to get in
$504K
Deposit + fees + refurb
Return before costson price3.69%5-yr return on cash -61%Rent est. $4,486 ($4,207–$4,784)
Bedrooms
3
2 bath
Run the numbers
Each tab prefills
What-if calculator
Edit any input — outputs recalc live
Buy-to-Let. Standard rental on an Assured Shorthold Tenancy. Single household, market rent, paid monthly direct to landlord (or via agent). (hover any strategy tab for pros + cons)
Offer ($)
Monthly rent ($)
Local comp range: $4,207–$4,784/mo · n=52
Financing
DepositYour cash in — the rest is the mortgage25% · $365,000
5%100% (cash buy)
Standard 75% LTV for rental
Mortgage rate5y fixed7.0%
3.0%9.0%
5-year fixed (market average) — 7.00% (as of 2026-05).
Mortgage term (years)
Stress rate8.0%
5.0%9.0%
Fed base + 2pp stress (8.0%)
Acquisition costs
Refurb ($)
Tiered estimate (full refurb): $69,530–$130,090 range from $/sqft + per-room model
Legal + survey ($)
Standard house — $2,400 legal + $1,300 survey
Mortgage fees ($)
2% product fee on $1,095,000 loan + $1,000 booking fee
Running costs
Management10%
0%20%
Typical rental agency rate
Void weeks
Typical voids for rental
Insurance ($/mo)
Typical building+landlord cover for $400K+
Maintenance ($/mo)
Default $67/mo — type unknown
Result · Rent it out
Monthly profit
-$5,254
after mortgage, operating costs & tax
Rent in$4,486/mo
$4,313Collected
$4,313/mo actually reaches you — the other $173 is lost to voids: the weeks a rental sits empty between tenants, when no rent comes in.
Where it goes
$7,285Mortgage$2,455Costs
Outgoings exceed rent — you top up $5,255/mo
Mortgage$7,285
Costs$2,455
Management$449
Maintenance$67
Insurance$40
CapEx reserve$224
Voids + council tax$12
Ltd co. accounts$104
Tax—
Shortfall−$5,255
Returns
Return before costson price3.69%
Cash returnon cash-12.50%
Gross margin$1,858
Cash needed$504,318
Monthly profit paybackn/a (monthly loss)
Data confidence
Lender stress test
Rent-covers-mortgage check0.35
Rent-covers-mortgage check FAIL (need ≥ 1.00)
Year-by-year Monthly profit (5-yr horizon)
Net Monthly profit after tax. Rent + costs compound at their growth rates; mortgage principal amortises year-by-year for repayment loans.
Mortgage paydownRent profitbefore price growth
Full year-by-year breakdown
Year
Gross Rent
Op Costs
Mortgage
Equity Built
Tax
Net
Cumulative
Year 1
$53,832
$29,465
$87,421
$0
$0
-$63,054
-$63,054
Year 2
$55,447
$30,349
$87,421
$0
$0
-$62,323
-$125,377
Year 3
$57,110
$31,260
$87,421
$0
$0
-$61,570
-$186,947
Year 4
$58,824
$32,198
$87,421
$0
$0
-$60,795
-$247,742
Year 5
$60,588
$33,163
$87,421
$0
$0
-$59,996
-$307,737
What we verified
3 total
3000
Building condition1▾
Refurb costBased on beds + baths + sqftEstimate available
Investor profile2▾
Tenant profileBeds + postcode heuristicFamily / Rent by the room
Rent by the room feasibilityMin 3 beds for C4 routeFeasible
Comparables
sold within 0.5 mi
Location & transport
Loading map…
PropertySchoolsUniversitiesStations
Transport detail not loaded for this property.
Acquisition costs
$504K
25% deposit$365,000
Refurb$99,810
Legal + survey$3,700
Mortgage + broker$22,900
Cash needed$504,318
Green = verified data. Amber = market typical. Red = our estimate — verify before offering.
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Sources: Zillow · County records · GreatSchools Estimates not financial advice