15 Grange Gardens, Llantwit Major, CF61 2XB

UPRN:64010026Detached House5 bedsBuilt -

FreeholdCouncil Tax: Band EEPC: D (65)

Data freshness:Listing· freshPrice Paid· freshEPC· 3mo agoRisk· 2y agoConnectivity· 1mo agoSchools· 4mo agoAmenities· 1mo agoArea· Census 2021

15 Grange Gardens, Llantwit Major, CF61 2XB

HP Score

/ 100

Strong

Verdict

yesterday

Verdict: AVOID, on a scale of Buy, Investigate, Avoid.
Significant risk factors

Evidence

16 of 21 sources

Sale Estimate

£404,000

£384k - £424kHigh

Estimate

£404k

Range

£384k – £424k

Rent Estimate (pcm)

£1,600

£2k - £2k

Monthly

£1,600

Yield

5.05%

Verdict

Derived from HomePortfolio scores

15 Grange Gardens earns an AVOID rating with HP Score 77/100. Investment score 68/100 reflects moderate fundamentals. Crime intensity is very low. 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.

Key SourcesEPC RegisterPortal listingsOfcom Connected NationsOfcom mobile coverageMarket estimates (third-party AVM)ONS Census 2021Police.ukHM Land Registry company ownershipHM Land Registry covenantsHM Land Registry leasesHM Land Registry Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

77/ 100

Strong

Investment Score

68/ 100

Moderate

Crime Score

13/ 100

Low

Walkability

No data

Transit & Bike

No data

Opportunity

Why this could be an opportunity

Low confidence1 independent sourceListing checked 4 Nov 2026

This rests largely on a single source. Treat the score as a prompt to investigate, not a conclusion.

Valuation edge2.5/15
claims [AVM +5.9% (HIGH), sold-comps +15.0%, £/sqft +15.0%] → 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 9 Oct 2026
- valuation_snapshotsestimate for 64010026· as of 9 Oct 2026
- property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 17.8%· as of 24 Oct 2026
Rental economics0.4/40
gross yield 5.1%; range width penalty ×0.89
- valuation_snapshotsrent estimate 1600/mo (range 1500-1750)· as of 9 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -557/mo, -35% of rent (6.75% on a 75% loan; no service charge or ground rent disclosed); fails the stress - earns nothing
- underwriting_assumptionscosts not disclosed by the advert· as of 4 Nov 2026
Seller motivationNot scored
context, not scored: 0 price cut(s), 55 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 4 Nov 2026
Risk & liquidity14.7/15
101 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 sensitivity

£285,000£437,000

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

Purchase price£380,000

At the asking price

Monthly rent£1,600/mo

Evidenced range £1,500-£1,750

Interest rate5.4%

Loan to value75%

Cash required: £124,300
Net cash flow: -£175/mo
Cash on cash: -1.7%
Score at this price: 18

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.25 - below 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 64010026Valuation edge · as of 9 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 17.8%Valuation edge · as of 24 Oct 2026
valuation_snapshotsrent estimate 1600/mo (range 1500-1750)Rental economics · as of 9 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 4 Nov 2026
portal_listingsprice_changes + first_published_dateSeller motivation · as of 4 Nov 2026

Risks

What could kill this deal

Score confidence is low
largely a single source - treat the number as a prompt, not a conclusion
Rental economics needs verification before you rely on it
rent estimate 1600/mo (range 1500-1750)
Seller motivation could not be scored
context, not scored: 0 price cut(s), 55 days on market; homes with a cut sold 0.2-0.3pp further below the cut ask, which is not an edge

Property risk deep-dive →

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. 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.
3. Commission a full structural survey, not a basic condition report.
The score prices market evidence, not the fabric of the building.

Every step above was generated from a specific gap or flag in the evidence - no generic advice, no invented tasks.

Valuation & Market

Sale Estimate£404,000

Rent Estimate (pcm)£1,600

Gross Yield5.05%

1y Growth+42.9%

3y Growth+1.8%

5y Growth+3.8%

10y Growth+4.3%

Last Sold Price-

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceLow
RadonModerate
MiningUnknown
LandslideLow
Air QualityLow
NoiseWithheld

View Full Risk Report

Planning Activity

Recent Apps

-CF61 2XB

Approval Rate

-12mo

Development

2025/01182/FUL
First floor side extension, garage conversion and single storey rear extension, and widening of the driveway.
Approved
2024/00598/1/CD
Discharge of Condition 3. (Materials Details) for planning ref 2024/00598/FUL - Proposed side extension with small pitched roof dormer and balcony to one elevation and single storey extension to opposite elevation to existing domestic dwellinghouse at Bridge House Farm, Llanmaes Road, Llanmaes
Approved
2023/00113/2/NMA
Non Material Amendment - An amendment to the removal of pitched roof and replace with flat roof, for planning permission ref 2023/00113/FUL - Demolition of single storey extension and construction of new single storey extension
Approved

View Planning Timeline