12.49% Rent by the room return before costs — market rent unverified, verify rent + comps locally.
Why it works
8.41% return before costs — above-market
12.5% Rent by the room return before costs (net 6.34% after CapEx + bills) — conversion play
Stress Rent-covers-mortgage check PASS at 6.5% rate stress — lender-friendly
Why to be cautious
EPC D — must hit C by 2030 (~£3,000–£7,000)
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
+£71/mo
Barely breaks even each month
Price
£150K
No local sold comps to compare
Return · IRR
1.7%/yr
Modest annualised return
Cash to get in
£67K
Deposit + fees + refurb
Return before costson price · Rent by the room12.49%5-yr return on cash 12%Rent est. £1,051 (£985–£1,121)
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: £985–£1,121/mo · n=8
Financing
DepositYour cash in — the rest is the mortgage25% · £37,500
5%100% (cash buy)
Standard 75% LTV for BTL
Mortgage rate5y fixed5.5%
3.0%9.0%
5-year fixed (market average) — 5.50% (as of 2026-05).
Mortgage term (years)
Stress rate6.5%
5.0%9.0%
BoE base + 2pp stress (6.5%)
Acquisition costs
Refurb (£)
Per-property refurb estimate from the element rate-card model (£12,593–£23,506 range), VAT-inclusive
Legal + survey (£)
Standard house — £1,100 legal + £600 survey
Mortgage fees (£)
2% product fee on £112,500 loan + £1,000 booking fee
+£294/mo cash flow vs Rent it out if converted to Rent by the room
19.20% Return before costs on price converted vs 8.41% as-is
£150k → 5-bed HMO @ ~£493/room: £2,368 pcm gross, ~£1,357 pcm net (9.3% net on £176k all-in incl. ~£16k works); GDV ~£181k → refinance releases ~£23k (~£40k left in)
medium confidence
Unlocks ~£12,488/yr extra rent
3 → 5 lettable rooms
Potential, not guaranteed (subject to planning + regs). Estimate from the floorplan (kitchen size assumed) — verify room sizes against the floorplan before offering.
How we calculated this
floorplan shows 6 habitable rooms (3 beds + 3 reception(s)) in 87 m²; convert 2 spare room(s) to bedrooms, keeping one reception as the lounge → up to 5 lettable rooms; sized to Swansea adopted standard (6.5/10.2 m²; Swansea HMO Licensing Policy 2020 App.A Amenity Standards); adds ~£1,041/mo; loft conversion may add 1-2 further rooms (subject to head height/planning — not counted); HMO licence: mandatory in Wales only for 3-storey 5+ person HMOs; additional-licensing schemes are common — confirm with the council. Rent Smart Wales registration required; Wales: planning permission required for HMO change of use (no C3→C4 permitted development)
Pro members see the floorplan with every convertible room outlined in green. Verify room sizes before offering.
3 → 5 bed HMO+2 singles
Wales: planning required for HMO use
✓Sized to Swansea's adopted HMO standards
Projections use documented assumptions (local room rates, typical conversion costs, 75% LTV at 5.5%, indicative regional valuation yields) and each council’s published HMO standards. Not financial advice. Verify room sizes, licensing and planning with the council and a surveyor before purchase.
Room mix (3 lettable rooms)
2× Double @ £547/mo1× Single @ £468/mo
≈ £1,561/mo gross room income
As-is Rent it out
Monthly profit+£52
Return before costson price8.41%
Cash needed£49,398
If converted to Rent by the room
Monthly profit+£346
Return before costson price19.20%
Cash needed£65,398
Δ vs Rent it outMonthly profit+£294
+2 rooms (5 total)
Monthly profit+£464
Return before costson price20.81%
Cash needed£85,398
Extra rent+£1,041/mo
Show conversion detail
Conversion cost estimate
£48,000
Range: £42,000 – £56,000
Fire safety, plumbing, partitioning, licensing.
Rates as of Apr 2026
£47,883–£90,000full refurb + room split
⚠️ Capped at 60% of £150,000 asking (£90,000). Raw model: £48,990–£92,080. Verify with a surveyor before offering.
What's in this cost
Kitchen£8,445–£16,890
1 × bathroom£5,571–£10,214
Rewire£3,871–£6,773
Replumb£2,903–£5,806
Windows£9,676–£17,417
Paint + decor£6,773–£12,579
Flooring£10,644–£20,320
Based on 18 HMO comps within 3.2 km
Comparables
sold within 0.5 mi
Loading nearby sold…
Location & area intelligence
Transport 30 / 100
No coordinates available — verify address with the agent.
Transport score30 / 100
Schools & catchment4 schools nearby
Nearby schoolsOfsted-rated, nearest first4 of 5
Casllwchwr Primary School
Not applicable · Welsh establishment · SA4 6TU
Not rated
Pontybrenin Primary School
Not applicable · Welsh establishment · SA4 6HX
Not rated
Tre Uchaf Primary School
Not applicable · Welsh establishment · SA4 6QB
Not rated
Ysgol Gynradd Gymraeg Pontybrenin
Not applicable · Welsh establishment · SA4 6AU
Not rated
Ofsted · postcode-area match. Catchment areas vary year to year — verify with the local council before relying for school admissions.
Tax treatment
£762/yr kept
Annual gross rent£12,612
Section 24 credit£0
Annual tax due£293
Post-tax Monthly profitannual£762
Exit costs
£8,384 after CGT
Projected sale price (5y · 2%/yr growth)£165,612
Capital gain (pre-CGT)£15,612
Sale costs (~2.5%)£4,140
CGT due (Ltd Co 25%)£0
No personal CGT — the gain is taxed at the company level (corporation tax) when the SPV disposes of the property.
Net 5y Monthly profitafter CGT£8,384
Rates as of Oct 2024
Acquisition costs
£67,240cash needed
Purchase price£150,000
Deposit (25%)£37,500
Stamp duty+5% additional-property surcharge£8,000
Refurb£16,790
Legal + survey£1,700
Mortgage fees£3,250
Total cash neededdeposit + costs (loan covers the rest)£67,240
Green = verified data. Amber = market typical. Red = our estimate — verify before offering.
About this propertydescription · rightmove
Description& agent copyRightmove
SUMMARY
This charming 3 bedroom terrace nestled in the sought after location of Gorseinon could be the perfect place to call home. Behind the delightlful traditional exterior lies a blend of cozy ambience and modernisation. Viewing is highly recommended. Call the office on .....
DESCRIPTION
Presenting a charming 3-bedroom Terrace property with a delightful traditional rendered exterior, set in the sought after area of Gorseinon. This lovely home boasts a great sized garden,…
12.49%Rent by the room strategy — market rent unverified, verify locally.
Stress Rent-covers-mortgage check PASS at 6.5% rate stress
8.41% Return before costs — above-market
12.5% Rent by the roomReturn before costs — conversion play
Energy rating D — must hit C by 2030 (~£3,000–£7,000)
Price
£150K
Return before costs (best)
12.49%
Rent by the room
Bedrooms
3
1 bath
Energy rating
D
Energy rating
Deal flags1 issue
EPC D — upgrade by 2030
Must reach EPC C by 2030 to let on a new tenancy
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: £985–£1,121/mo · n=8
Financing
DepositYour cash in — the rest is the mortgage25% · £37,500
5%100% (cash buy)
Standard 75% LTV for BTL
Mortgage rate5y fixed5.5%
3.0%9.0%
5-year fixed (market average) — 5.50% (as of 2026-05).
Mortgage term (years)
Stress rate6.5%
5.0%9.0%
BoE base + 2pp stress (6.5%)
Acquisition costs
Refurb (£)
Per-property refurb estimate from the element rate-card model (£12,593–£23,506 range), VAT-inclusive
Legal + survey (£)
Standard house — £1,100 legal + £600 survey
Mortgage fees (£)
2% product fee on £112,500 loan + £1,000 booking fee
Short-let (SA) context325 active short-lets nearby
Short-let market context
Local nightly-rate and occupancy benchmarks for this postcode.
325 active short-let listings in this postcode
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
£12,612
£4,040
£7,031
£0
£293
£1,247
£1,247
Year 2
£12,990
£4,162
£7,031
£0
£342
£1,456
£2,703
Year 3
£13,380
£4,286
£7,031
£0
£392
£1,670
£4,374
Year 4
£13,781
£4,415
£7,031
£0
£444
£1,891
£6,265
Year 5
£14,195
£4,547
£7,031
£0
£497
£2,119
£8,384
Rent by the roomupside
Tap to expand
Rent by the room conversion upside—▾
Required
Rooms (3+)3 bd
Conversion£30,000
If converted
Gross / mo£1,561
Gross Rent by the room yield12.49%
What we verified
12 total
4104
Legal & planning4▾
Article 4HMO restriction lookupUnknown
Rent by the room licensingMandatory if 5+ unrelatedCheck LPA
TenureTenure typeFreehold
HeritageListed building / conservation areaNot stated on the listing
Building condition3▾
EPC~£3,000–£7,000 to upgrade to CD
EWS1External wall safety (cladding)Not stated on the listing
Refurb costBased on beds + baths + sqftEstimate available
Area3▾
Crimepolice.uk · monthlyNo location
SchoolsGIAS · OfstedNo postcode
FloodEA Flood Map · England onlyNo location
Investor profile2▾
Tenant profileBeds + postcode heuristicUnknown
Rent by the room feasibilityMin 3 beds for C4 routeFeasible
Comparables
sold within 0.5 mi
Loading nearby sold…
Tax & exit
Ltd Co
Tax bandLtd Co 25%
Mortgage-interest tax rule credit£1,406
Annual rental tax£201
CGT yr 5£0 · company level
5y net total£8,384
Acquisition costs
£67K
25% deposit£37,500
Stamp duty£8,000
Refurb£16,790
Legal + survey£1,700
Mortgage + broker£3,250
Cash needed£67,240
Green = verified data. Amber = market typical. Red = our estimate — verify before offering.
Make an offer
Pro analysis — outcome range, stress tests & portfolio impact
Your notes
Auto-saves
Description& agent copyRightmove
SUMMARY
This charming 3 bedroom terrace nestled in the sought after location of Gorseinon could be the perfect place to call home. Behind the delightlful traditional exterior lies a blend of cozy ambience and modernisation. Viewing is highly recommended. Call the office on .....
DESCRIPTION
Presenting a charming 3-bedroom Terrace property with a delightful traditional rendered exterior, set in the sought after area of Gorseinon. This lovely home boasts a great sized garden,…