Likely sold or withdrawnWe last saw this listing 28 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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1 BED CONDOListed 34d ago
1-bed condo investor view
15 Sleeper St APT 407, Boston, MA 02210 · 915 sqft · $1,070/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
−$3K/mo
You top up $3K/mo
Price
$979K
No local sold comps to compare
Return · IRR
—
Not modelled
Cash to get in
$338K
Deposit + fees + refurb
Return before costson price3.80%5-yr return on cash -61%Rent est. $3,104 ($2,570–$3,749)
How we define each return:On price — gross yield = annual rent ÷ purchase price.On cost — net yield ÷ total project cost (price + refurb + fees).On cash — cash-on-cash & ROI ÷ the actual cash you put in (deposit + costs).
Listing seen …
What-if calculator
Edit any input — outputs recalc live
Buy-to-Let. Standard rental on an Assured Shorthold Tenancy. Single household, market rent, paid monthly direct to landlord (or via agent). (hover any strategy tab for pros + cons)
Offer ($)
Monthly rent ($)
Local comp range: $2,570–$3,749/mo · n=125
Financing
DepositYour cash in — the rest is the mortgage25% · $244,750
5%100% (cash buy)
Standard 75% LTV for rental
Mortgage rate5y fixed7.0%
3.0%9.0%
5-year fixed (market average) — 7.00% (as of 2026-05).
Mortgage term (years)
Stress rate8.0%
5.0%9.0%
Fed base + 2pp stress (8.0%)
Acquisition costs
Refurb ($)
Tiered estimate (full refurb): $46,365–$87,205 range from $/sqft + per-room model
Legal + survey ($)
Standard house — $1,900 legal + $1,000 survey
Mortgage fees ($)
2% product fee on $734,250 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
-$3,495
after mortgage, operating costs & tax
Rent in$3,104/mo
$2,985Collected
$2,985/mo actually reaches you — the other $119 is lost to voids: the weeks a rental sits empty between tenants, when no rent comes in.
Where it goes
$4,885Mortgage$1,714Costs
Outgoings exceed rent — you top up $3,495/mo
Mortgage$4,885
Costs$1,714
Management$310
Maintenance$67
Insurance$40
CapEx reserve$155
Voids + council tax$12
Ltd co. accounts$104
Tax—
Shortfall−$3,495
Returns
Return before costson price3.80%
Cash returnon cash-12.41%
Gross margin$1,271
Cash needed$338,027
Monthly profit paybackn/a (monthly loss)
Data confidence
Lender stress test
Rent-covers-mortgage check0.36
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
$37,248
$20,568
$58,620
$0
$0
-$41,940
-$41,940
Year 2
$38,365
$21,185
$58,620
$0
$0
-$41,439
-$83,379
Year 3
$39,516
$21,820
$58,620
$0
$0
-$40,924
-$124,303
Year 4
$40,702
$22,475
$58,620
$0
$0
-$40,393
-$164,696
Year 5
$41,923
$23,149
$58,620
$0
$0
-$39,846
-$204,542
Year 5 disposal
Disposal gain (gross)-$14,392
CGT$0
Net Disposal proceeds$1,053,873
What we verified
What we verified
2 total · click to expand
20002 ok · 0 caution · 0 fail · 0 unknown
Investor
Tenant profileMixed demand
Tenant profilelikely cohort1 bed
Primary profile
Mixed demand
Nearest university
for student-let assessment
University of Glasgow · 4874.9 km
Reason
Mixed-demand area without a single dominant tenant cohort. Local lettings agent can clarify.
Likely sold or withdrawnWe last saw this listing 28 days ago. It may no longer be available — treat these numbers as a reference and confirm with the listing agent before acting.
8/100
Marginal
3.80% — verify the rent + comps locally.
3.80% Return before costs — around the area average for this property type.
Monthly profit −$3,495/mo at the default 25% deposit @ 5.5% — open the calculator to stress-test.
Monthly cashflow
−$3K/mo
You top up $3K/mo
Price
$979K
No local sold comps to compare
Return · IRR
—
Not modelled
Cash to get in
$338K
Deposit + fees + refurb
Return before costson price3.80%5-yr return on cash -61%Rent est. $3,104 ($2,570–$3,749)
Bedrooms
1
1 bath
Run the numbers
Each tab prefills
What-if calculator
Edit any input — outputs recalc live
Buy-to-Let. Standard rental on an Assured Shorthold Tenancy. Single household, market rent, paid monthly direct to landlord (or via agent). (hover any strategy tab for pros + cons)
Offer ($)
Monthly rent ($)
Local comp range: $2,570–$3,749/mo · n=125
Financing
DepositYour cash in — the rest is the mortgage25% · $244,750
5%100% (cash buy)
Standard 75% LTV for rental
Mortgage rate5y fixed7.0%
3.0%9.0%
5-year fixed (market average) — 7.00% (as of 2026-05).
Mortgage term (years)
Stress rate8.0%
5.0%9.0%
Fed base + 2pp stress (8.0%)
Acquisition costs
Refurb ($)
Tiered estimate (full refurb): $46,365–$87,205 range from $/sqft + per-room model
Legal + survey ($)
Standard house — $1,900 legal + $1,000 survey
Mortgage fees ($)
2% product fee on $734,250 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
-$3,495
after mortgage, operating costs & tax
Rent in$3,104/mo
$2,985Collected
$2,985/mo actually reaches you — the other $119 is lost to voids: the weeks a rental sits empty between tenants, when no rent comes in.
Where it goes
$4,885Mortgage$1,714Costs
Outgoings exceed rent — you top up $3,495/mo
Mortgage$4,885
Costs$1,714
Management$310
Maintenance$67
Insurance$40
CapEx reserve$155
Voids + council tax$12
Ltd co. accounts$104
Tax—
Shortfall−$3,495
Returns
Return before costson price3.80%
Cash returnon cash-12.41%
Gross margin$1,271
Cash needed$338,027
Monthly profit paybackn/a (monthly loss)
Data confidence
Lender stress test
Rent-covers-mortgage check0.36
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
$37,248
$20,568
$58,620
$0
$0
-$41,940
-$41,940
Year 2
$38,365
$21,185
$58,620
$0
$0
-$41,439
-$83,379
Year 3
$39,516
$21,820
$58,620
$0
$0
-$40,924
-$124,303
Year 4
$40,702
$22,475
$58,620
$0
$0
-$40,393
-$164,696
Year 5
$41,923
$23,149
$58,620
$0
$0
-$39,846
-$204,542
What we verified
3 total
2100
Building condition1▾
Refurb costBased on beds + baths + sqftEstimate available
Investor profile2▾
Tenant profileBeds + postcode heuristicFamily let
Rent by the room feasibilityMin 3 beds for C4 routeBelow threshold
Comparables
sold within 0.5 mi
Location & transport
Loading map…
PropertySchoolsUniversitiesStations
Transport detail not loaded for this property.
Acquisition costs
$338K
25% deposit$244,750
Refurb$66,785
Legal + survey$2,900
Mortgage + broker$15,685
Cash needed$338,027
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