18 Llwyn Passat, Penarth, CF64 1SE

UPRN:64013376Flat/Maisonette1 bedsBuilt 1996-2002

LeaseholdCouncil Tax: -EPC: C (71)

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

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

£211,000

£201k - £222kHigh

Estimate

£211k

Range

£201k – £222k

Rent Estimate (pcm)

£1,000

£950 - £1k

Monthly

£1,000

Yield

7.50%

Verdict

Derived from HomePortfolio scores

18 Llwyn Passat earns an INVESTIGATE rating with HP Score 85/100. Investment score 71/100 reflects strong fundamentals. Crime intensity is very low. Flood risk is not assessed: check the Environment Agency long-term flood map before offering. Tenure is leasehold. 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

85/ 100

Strong

Investment Score

71/ 100

High

Crime Score

9/ 100

Low

Walkability

No data

Transit & Bike

No data

Opportunity

Why this could be an opportunity

Low confidence1 independent sourceLead to verifyListing checked 2 Nov 2026

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

Check before relying on this score: the estimate sits 24% above the ask. It ranks after every home whose inputs are verified.

Valuation edge2.5/15
claims [AVM +24.2% (HIGH), sold-comps +8.6%, £/sqft +8.8%] → 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 10 Oct 2026
- valuation_snapshotsestimate for 64013376· as of 10 Oct 2026
- property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 11.5%· as of 28 Oct 2026
Rental economics20/40
gross yield 7.5%; range width penalty ×1.00; the estimate this rent rides on sits 24% above the ask - check the rent describes the advertised home
- valuation_snapshotsrent estimate 1000/mo (range 950-1050)· as of 10 Oct 2026· verify before relying on this
- valuation_snapshotssale estimate 24% above the ask on the same snapshot - verify the rent describes this home· as of 10 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -174/mo, -17% of rent (6.75% on a 75% loan; disclosed service charge and ground rent); fails the stress - earns nothing
- listing_factsservice charge / ground rent from the advert· as of 2 Nov 2026
Seller motivationNot scored
context, not scored: 0 price cut(s), 64 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
404 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

£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£159,950

At the asking price

Monthly rent£1,000/mo

Evidenced range £950-£1,050

Interest rate5.4%

Loan to value75%

Cash required: £49,985
Net cash flow: £152/mo
Cash on cash: 3.7%
Score at this price: 37

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.85 - 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 64013376Valuation edge · as of 10 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 11.5%Valuation edge · as of 28 Oct 2026
valuation_snapshotsrent estimate 1000/mo (range 950-1050)Rental economics · as of 10 Oct 2026 · verify before relying on this
valuation_snapshotssale estimate 24% above the ask on the same snapshot - verify the rent describes this homeRental economics · as of 10 Oct 2026 · verify before relying on this
listing_factsservice charge / ground rent from the advert

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 1000/mo (range 950-1050)
Rental economics needs verification before you rely on it
sale estimate 24% above the ask on the same snapshot - verify the rent describes this home

Plan

Before you offer

1. Get two written rental appraisals from local lettings agents.
The market estimate this rent rides on sits far above the asking price, so the rent may describe a different home.
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£211,000

Rent Estimate (pcm)£1,000

Gross Yield7.50%

1y Growth-6.9%

3y Growth+0.6%

5y Growth+2.0%

10y Growth+3.7%

Last Sold Price£140,000 (2019-11-01)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceModerate
RadonModerate
MiningUnknown
LandslideLow
Air QualityLow
NoiseWithheld

View Full Risk Report

Planning Activity

Recent Apps

0CF64 1SE

Approval Rate

-12mo

Development

low

26/01153/CLPUD
Remediation works comprising of replacement rendering, cladding and balcony decking. Installation of cavity barriers within brickwork and inspection of curtain walling system with cavity barriers installed at compartment floor and wall lines wherever deficiencies are identified
Approved
26/01078/CLPUD
Remediation works comprising of replacement rendering, cladding and balcony decking. Installation of cavity barriers within brickwork and inspection of curtain walling system with cavity barriers installed at compartment floor and wall lines wherever deficiencies are identified
Approved
26/01079/CLPUD
Remediation works comprising of replacement rendering, cladding and balcony decking. Installation of cavity barriers within brickwork and inspection of curtain walling system with cavity barriers installed at compartment floor and wall lines wherever deficiencies are identified
Approved

View Planning Timeline