5 Celyn Avenue, Cardiff, CF23 6EH

UPRN:100100042014Semi-Detached House4 bedsBuilt 1950-1966

FreeholdCouncil Tax: -EPC: C (71)

Data freshness:Planning· 4mo agoOwnership· 1mo agoEPC· 3mo agoRisk· 2y agoConnectivity· 1mo agoSchools· 1mo agoAmenities· 2mo agoArea· Census 2021

HP Score

/ 100

Strong

Verdict

7 days ago

Verdict: INVESTIGATE, on a scale of Buy, Investigate, Avoid.
Strong fundamentals; flood risk not assessed

Evidence

18 of 21 sources

Sale Estimate

£520,000

£494k - £546kHigh

Estimate

£520k

Range

£494k – £546k

Rent Estimate (pcm)

£2,400

£2k - £3k

Monthly

£2,400

Yield

4.97%

Verdict

Derived from HomePortfolio scores

5 Celyn Avenue earns an INVESTIGATE rating with HP Score 86/100. 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)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

86/ 100

Strong

Investment Score

68/ 100

Moderate

Crime Score

6/ 100

Low

Walkability

No data

Transit & Bike

No data

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesListing checked 3 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 -11.5% (HIGH), sold-comps -38.1%, £/sqft -38.2%] → 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 100100042014· as of 12 Oct 2026
- property_comparablessold-evidence family (implied value + £/sqft): 6 comps, dispersion 22.8%· as of 1 Nov 2026
Rental economics0/40
gross yield 5.0%; range width penalty ×0.87
- valuation_snapshotsrent estimate 2400/mo (range 2200-2600)· as of 12 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -813/mo, -34% 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 3 Nov 2026
Seller motivationNot scored
context, not scored: 0 price cut(s), 43 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 3 Nov 2026
Risk & liquidity14.6/15
387 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

£435,000£667,000

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£580,000

At the asking price

Monthly rent£2,400/mo

Evidenced range £2,200-£2,600

Interest rate5.4%

Loan to value75%

Cash required: £194,300
Net cash flow: -£296/mo
Cash on cash: -1.8%
Score at this price: 13

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.23 - 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 100100042014Valuation edge · as of 12 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 6 comps, dispersion 22.8%Valuation edge · as of 1 Nov 2026
valuation_snapshotsrent estimate 2400/mo (range 2200-2600)Rental economics · as of 12 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 3 Nov 2026
portal_listingsprice_changes + first_published_dateSeller motivation · as of 3 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 2400/mo (range 2200-2600)
Seller motivation could not be scored
context, not scored: 0 price cut(s), 43 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£520,000

Rent Estimate (pcm)£2,400

Gross Yield4.97%

1y Growth-

3y Growth-0.9%

5y Growth+0.4%

10y Growth+2.4%

Last Sold Price£370,000 (2017-07-28)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceLow
RadonModerate
MiningLow
LandslideModerate
Air QualityLow
NoiseWithheld

View Full Risk Report

Planning Activity

Recent Apps

0CF23 6EH

Approval Rate

-12mo

Development

low

26/02293/WTCA
Magnolia - Remove dead wood. Apple - Reduce by 2.5m (Reduce size of crown). Mulberry - Reduce by 1-2m (to improve shape)
Pending
26/02269/HSE
Proposed single storey rear extension. Reinstatement of front balcony balustrades. Replacement windows/doors where indicated. Internal alterations.
Pending
26/02171/HSE
Proposed single storey extension to the south west of the existing dwelling and new door in the north west elevation.
Pending

View Planning Timeline