Data freshness:●Listing· freshListing: fresh, refreshed 4d ago (2026-11-02T04:00:05.857782+00:00)●Price Paid· freshPrice Paid: fresh, refreshed 4d ago (2026-11-01T12:44:00.049769+00:00)●Planning· 4mo agoPlanning: stale, refreshed 4mo ago (2026-07-10T09:39:56.330308+00:00)●EPC· 1mo agoEPC: ageing, refreshed 1mo ago (2026-10-01T14:19:08.654109+00:00)●Risk· 5mo agoRisk: stale, refreshed 5mo ago (2026-06-18T00:00:00+00:00)●Connectivity· 1mo agoConnectivity: ageing, refreshed 1mo ago (2026-10-03T06:43:10.905825+00:00)●Schools· 1mo agoSchools: ageing, refreshed 1mo ago (2026-10-06T08:24:30.427161+00:00)●Amenities· 1mo agoAmenities: ageing, refreshed 1mo ago (2026-09-23T00:00:00+00:00)●Area· Census 2021Area: static reference data (Census 2021); authoritative and does not refresh
HP Score
75
/ 100
Strong
Verdict
today
Verdict: INVESTIGATE, on a scale of Buy, Investigate, Avoid.
Strong fundamentals; flood risk not assessed
Evidence
18 of 21 sources
Sale Estimate
£157,000
£150k - £165kHigh
Estimate
£157k
Range
£150k – £165k
Rent Estimate (pcm)
£1,200
£1k - £1k
Monthly
£1,200
Yield
9.60%
Verdict
Derived from HomePortfolio scores
21 Kelvin Street earns an INVESTIGATE rating with HP Score 75/100. Investment score 55/100 reflects moderate fundamentals. Crime intensity is low. Walkability is good (74/100). Flood risk is not assessed: check the Environment Agency long-term flood map before offering. Tenure is freehold. Every figure here comes from the live HomePortfolio API; anything it does not publish is left out.
Tree 36 English Oak: Reduce SE facing branch over neighbouring garden by 4m. Tree 67 English Oak: Reduce hyper-extending branch facing NW over boundary fence by 6m. Tree 91 Beech: Remove 120mm dia.branch facing W@11m back to union/away from building. Removal of the following self-seeded trees (located in the thin strip of land between the Laburnum Avenue boundary and the historic Kitchen Garden wall): 10 Ash, 5 Sycamore, 1 Ash (Works to trees in a conservation area)
Pending
26/01022/CONDET
Discharge of conditions for 22/00725/FULL - Erection of 5 x 2 bed dwelling houses - condition 4, 6, 7, 8, 9
Pending
26/00998/FULL
Erection of single storey rear extension (max x 6m long x max 5.79m wide x max 3.37m high; height to eaves 2.87m)
No registered title polygon, building footprint, or street match for this property yet.
Why: No HMLR INSPIRE / OSM footprint / OS Open USRN match for this UPRN
Source: HM Land Registry INSPIRE / OpenStreetMap / OS Open USRN
Opportunity
Why this could be an opportunity
64
High confidence3 independent sourcesListing checked 2 Nov 2026
Every component scored, and three or more independent sources agree.
Valuation edge2.5/15
claims [AVM +4.5% (HIGH), sold-comps +10.7%, £/sqft +10.8%] → measured edge +0.50pp of the ask; on later-registered sales an AVM discount carried no edge and a sold-evidence gap at most +0.5pp
Market estimate used (HIGH confidence) · snapshot 12 Oct 2026
valuation_snapshotsestimate for 21054571· as of 12 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 10.5%· as of 31 Oct 2026
Rental economics36.8/40
gross yield 9.6%; range width penalty ×1.00
valuation_snapshotsrent estimate 1200/mo (range 1150-1250)· as of 12 Oct 2026· verify before relying on this
listing_factslisting text signals condition works - budget before trusting any yield· as of 2 Nov 2026· verify before relying on this
Stress margin9.9/30
stressed cash flow +119/mo, +10% of rent (6.75% on a 75% loan; no service charge or ground rent disclosed); passes the stress
underwriting_assumptionscosts not disclosed by the advert· as of 2 Nov 2026
Seller motivationNot scored
context, not scored: 0 price cut(s), 29 days on market; homes with a cut sold 0.2-0.3pp further below the cut ask, which is not an edge
portal_listingsprice_changes + first_published_date· as of 2 Nov 2026
Risk & liquidity14.7/15
421 sales/12mo in area; valuation range width 10%
property_intelligencetransactions_12mo
4 of 4 components scored. Ranks on gross yield, the stress margin, risk and disclosed facts. A pricing claim earns only its measured edge: today 0 for the market estimate and at most +0.5pp for sold evidence. The score itself is not yet checked against the outcomes of homes it scored.
Economics
What happens to your money
Price sensitivityScores 80+ up to £112,500
£112,500£172,500
The same scorer re-run at hypothetical asking prices, holding rent, comps and listing history constant. Not a prediction of what the seller would accept.
Your assumptions
£150,000
At the asking price
£1,200/mo
Evidenced range £1,150-£1,250
5.4%
75%
Cash required
£46,800
Net cash flow
£325/mo
Cash on cash
8.3%
Score at this price
64
After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 2.37 - clears the usual 1.25 test. These are your assumptions, not evidence: only the pre-filled rent and price come from the record.
Evidence
Where every number comes from
valuation_snapshotsestimate for 21054571Valuation edge · as of 12 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 10.5%Valuation edge · as of 31 Oct 2026
valuation_snapshotsrent estimate 1200/mo (range 1150-1250)Rental economics · as of 12 Oct 2026 · verify before relying on this
listing_factslisting text signals condition works - budget before trusting any yieldRental economics · as of 2 Nov 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 2 Nov 2026
Risks
What could kill this deal
Rental economics needs verification before you rely on it
rent estimate 1200/mo (range 1150-1250)
Rental economics needs verification before you rely on it
listing text signals condition works - budget before trusting any yield
Seller motivation could not be scored
context, not scored: 0 price cut(s), 29 days on market; homes with a cut sold 0.2-0.3pp further below the cut ask, which is not an edge
Plan
Before you offer
1. Get two written rental appraisals from local lettings agents.
The rent estimate rests on area-level evidence, not lettings on this street.
2. Set your walk-away price before viewing - above £112,500 the deal stops scoring well.
Computed by re-running the score at higher prices.
3. Treat the gap to the estimate as unproven - compare recent sold prices on the street yourself before pricing an offer around it.
On later completions, homes listed below their estimate sold at the same share of the asking price as the rest.
4. Commission a full structural survey, not a basic condition report.
The score prices market evidence, not the fabric of the building.
portal_listingsprice_changes + first_published_dateSeller motivation · as of 2 Nov 2026