10 William Street, Abertridwr, Caerphilly, CF83 4DJ

UPRN:43008869Terrace Property3 bedsBuilt 1900-1929

FreeholdCouncil Tax: -EPC: E (43)

Data freshness:Listing· freshPrice Paid· freshPlanning· 4mo agoEPC· 6mo agoRisk· 2y agoConnectivity· 1mo agoSchools· freshAmenities· 1mo agoArea· Census 2021

10 William Street, Abertridwr, Caerphilly, CF83 4DJ

HP Score

/ 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

£153,000

£145k - £161kHigh

Estimate

£153k

Range

£145k – £161k

Rent Estimate (pcm)

£800

£750 - £850

Monthly

£800

Yield

5.65%

Verdict

Derived from HomePortfolio scores

10 William Street earns an INVESTIGATE rating with HP Score 77/100. Investment score 67/100 reflects moderate fundamentals. Crime intensity is 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)HM Land Registry sales matched to addressONS 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

67/ 100

Moderate

Crime Score

19/ 100

Moderate

Walkability

No data

Transit & Bike

No data

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesListing checked 2 Nov 2026

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

Valuation edge-1.6/15
claims [AVM -11.1% (HIGH), sold-comps -14.9%, £/sqft -15.1%] → measured edge -0.33pp of the ask; on later-registered sales an AVM discount carried no edge and a sold-evidence gap at most +0.5pp; asking more than 10% above the estimate (measured -0.33pp)
Market estimate used (HIGH confidence) · snapshot 12 Oct 2026
- valuation_snapshotsestimate for 43008869· as of 12 Oct 2026
- property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 21.7%· as of 18 Oct 2026
Rental economics4.9/40
gross yield 5.6%; range width penalty ×0.95
- valuation_snapshotsrent estimate 800/mo (range 750-850)· as of 12 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -259/mo, -32% 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 2 Nov 2026
Seller motivationNot scored
context, not scored: 0 price cut(s), 92 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 & liquidity14.6/15
552 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

£127,500£195,500

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

Purchase price£170,000

At the asking price

Monthly rent£800/mo

Evidenced range £750-£850

Interest rate5.4%

Loan to value75%

Cash required: £53,200
Net cash flow: -£20/mo
Cash on cash: -0.4%
Score at this price: 18

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.39 - 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 43008869Valuation edge · as of 12 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 21.7%Valuation edge · as of 18 Oct 2026
valuation_snapshotsrent estimate 800/mo (range 750-850)Rental economics · as of 12 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 2 Nov 2026
portal_listingsprice_changes + first_published_dateSeller motivation · as of 2 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 800/mo (range 750-850)
Seller motivation could not be scored
context, not scored: 0 price cut(s), 92 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. 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£153,000

Rent Estimate (pcm)£800

Gross Yield5.65%

1y Growth+20.5%

3y Growth+3.9%

5y Growth+5.6%

10y Growth+4.8%

Last Sold Price£122,000 (2024-04-26)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceLow
RadonModerate
MiningUnknown
LandslideModerate
Air QualityLow
NoiseWithheld

View Full Risk Report

Planning Activity

Recent Apps

0CF83 4DJ

Approval Rate

-12mo

Development

low

26/0609/HH
Erect rear ground floor and basement extension and attic conversion
Pending
26/0541/COND
Discharge conditions 3 (Sound Insulation) and 4 (Waste) of planning consent 26/0277/FULL (Retain ground floor unit, convert first and second floor from 1 flat into 2 flats, addition of flat roof dormer to side elevation and introduction of bin and bike store to ground floor)
Approved
26/0456/CLPU
Obtain a Lawful Development Certificate for proposed single storey rear extension
Rejected

View Planning Timeline