37 Castleton Park, Castleton Road, St. Athan, Barry, CF62 4LG

UPRN:64047914-2 bedsBuilt -

Tenure: -Council Tax: -EPC: -

37 Castleton Park, Castleton Road, St. Athan, Barry, CF62 4LG

HP Score

Not available

Verdict

Verdict: INVESTIGATE, on a scale of Buy, Investigate, Avoid.
Mixed signals - investigate

Evidence

8 of 21 sources

Sale Estimate

£178,000

£161k - £196kMedium

Estimate

£178k

Range

£161k – £196k

Rent Estimate (pcm)

£800

£750 - £900

Monthly

£800

Yield

6.00%

Verdict

Derived from HomePortfolio scores

37 Castleton Park earns an INVESTIGATE rating; it has no HP Score yet. Flood risk is not assessed: check the Environment Agency long-term flood map before offering. Every figure here comes from the live HomePortfolio API; anything it does not publish is left out.

Key SourcesPortal listingsMarket estimates (third-party AVM)ONS Census 2021Police.ukPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

No data

Investment Score

No data

Crime Score

No data

Walkability

No data

Transit & Bike

No data

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesListing checked 30 Oct 2026

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

Valuation edge0/15
claims [AVM +10.1% (MEDIUM)] → measured edge +0.00pp 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 (MEDIUM confidence) · snapshot 10 Oct 2026
- valuation_snapshotsestimate for 64047914· as of 10 Oct 2026
Rental economics6.6/40
gross yield 6.0%; range width penalty ×0.82
- valuation_snapshotsrent estimate 800/mo (range 750-900)· as of 10 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -217/mo, -27% 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 30 Oct 2026
Seller motivationNot scored
context, not scored: 0 price cut(s), 91 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 30 Oct 2026
Risk & liquidity3.9/15
valuation range width 20%
- 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

£120,000£184,000

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£160,000

At the asking price

Monthly rent£800/mo

Evidenced range £750-£900

Interest rate5.4%

Loan to value75%

Cash required: £50,000
Net cash flow: £14/mo
Cash on cash: 0.3%
Score at this price: 10

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.48 - 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 64047914Valuation edge · as of 10 Oct 2026
valuation_snapshotsrent estimate 800/mo (range 750-900)Rental economics · as of 10 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 30 Oct 2026
portal_listingsprice_changes + first_published_dateSeller motivation · as of 30 Oct 2026
property_intelligencetransactions_12moRisk & liquidity

Sold comparables in depth

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 800/mo (range 750-900)
Seller motivation could not be scored
context, not scored: 0 price cut(s), 91 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£178,000

Rent Estimate (pcm)£800

Gross Yield6.00%

1y Growth-

3y Growth-

5y Growth-

10y Growth-

Last Sold Price-

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceUnknown
RadonUnknown
MiningUnknown
LandslideUnknown
Air QualityUnknown
NoiseUnknown

View Full Risk Report

Planning Activity

Recent Apps

-CF62 4LG

Approval Rate

-12mo

Development

2024/01148/TPO
Work to Tree covered by TPO No.12 of 2003: 1x Grey Alder situated on the adopted highway - Slight Crown lift and cut back from property
Approved
2024/01111/FUL
Reroofing and extending of existing kitchen. New porch to side of property.
Rejected
2024/00922/LBC
Retention of wooden ship lap storage shed along the rear boundary, wooden slatted three sided storage unit for logs, black coated aluminium glass greenhouse and temporary gym structure adjacent to the storage shed along the rear boundary.
Rejected

View Planning Timeline