3 Llys Y Porth, Porthmadog, LL49 9NG

UPRN:10024258130Semi-Detached HouseBeds -Built 2003-2006

Tenure: -Council Tax: Band EEPC: C (77)

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

HP Score

/ 100

Strong

Verdict

2 days ago

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

Evidence

15 of 21 sources

Sale Estimate

£179,000

£170k - £188kHigh

Estimate

£179k

Range

£170k – £188k

Rent Estimate (pcm)

£600

£550 - £650

Monthly

£600

Yield

4.16%

Verdict

Derived from HomePortfolio scores

3 Llys Y Porth earns an INVESTIGATE rating with HP Score 80/100. Investment score 86/100 reflects strong fundamentals. Crime intensity is low. 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 SourcesEPC RegisterPortal listingsOfcom Connected NationsOfcom mobile coverageMarket estimates (third-party AVM)ONS Census 2021Police.ukHM Land Registry covenantsHM Land Registry leasesHM Land Registry Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

80/ 100

Strong

Investment Score

86/ 100

Excellent

Crime Score

33/ 100

Moderate

Walkability

No data

Transit & Bike

No data

Opportunity

Why this could be an opportunity

Low confidence1 independent sourceListing checked 3 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 +3.4% (HIGH), sold-comps +38.7%, £/sqft +38.7%] → 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 12 Oct 2026
- valuation_snapshotsestimate for 10024258130· as of 12 Oct 2026
- property_comparablessold-evidence family (implied value + £/sqft): 7 comps, dispersion 9.9%· as of 30 Oct 2026
Rental economics3.3/40
gross yield 5.4% on contractual rent (listing-disclosed tenancy); contractual 795/mo far above the 600/mo estimate - credited at the 1.3x cap, verify
- listing_factscontractual rent 795/mo (tenanted)· as of 3 Nov 2026· verify before relying on this
Stress margin0/30
stressed cash flow -287/mo, -37% 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: 6 price cut(s), 100 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
50 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

£130,000£199,000

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£173,000

At the asking price

Monthly rent£600/mo

Evidenced range £550-£650

Interest rate5.4%

Loan to value75%

Cash required: £54,160
Net cash flow: -£168/mo
Cash on cash: -3.7%
Score at this price: 20

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.03 - 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 10024258130Valuation edge · as of 12 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 7 comps, dispersion 9.9%Valuation edge · as of 30 Oct 2026
listing_factscontractual rent 795/mo (tenanted)Rental economics · as of 3 Nov 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
contractual rent 795/mo (tenanted)
Seller motivation could not be scored
context, not scored: 6 price cut(s), 100 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. Ask the agent why the price was reduced and whether a previous sale fell through.
6 price cut(s) recorded on the listing history.
3. 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.
4. Commission a full structural survey, not a basic condition report.
The score prices market evidence, not the fabric of the building.

Valuation & Market

Sale Estimate£179,000

Rent Estimate (pcm)£600

Gross Yield4.16%

1y Growth-

3y Growth-5.1%

5y Growth-0.1%

10y Growth+1.8%

Last Sold Price-

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceLow
RadonLow
MiningSignificant
LandslideModerate
Air QualityLow
NoiseWithheld

View Full Risk Report

Planning Activity

Recent Apps

0LL49 9NG

Approval Rate

-12mo

Development

low

C26/0387/44/HY
Cais am arwyddion lefel uchel wedi'u goleuo ar y drychiadau blaen ac ochr dde, arwyddion taflunol wedi'u goleuo ar y drychiadau ochr dde ac ochr chwith, ac arwydd nad yw wedi'i goleuo ar y drychiad cefn / Application for Illuminated high level signs to front and right hand side elevations, illuminated projecting signs to right and left hand elevations and non illuminated sign to rear elevation
Pending
C26/0259/44/LL
Cais llawn i newid defnydd yr adeilad presennol i ddefnydd cymysg i gynnwys modurdy MOT(Defnydd B2) gyda gweddill yr adeilad yn cael ei ddefnyddio fel man storio a warysau (Defnydd B8) / Full planning application for the change of use of the existing building to a mixed use comprising of a MOT garage (B2 use class) with the remainder of the building to be used for storage and warehouse purposes (B8 use class)
Pending
C26/0240/44/DT
Cais arfaethedig am estyniad llanw umllawr ar fyngalo gydag estyniad i'r to / Proposed single storey infill extension to bungalow with an extension to roof
Pending

View Planning Timeline