4 Devon Place, Mumbles, Swansea, SA3 4DR

UPRN:100100338167Mid Terrace House4 bedsBuilt 1900-1929

FreeholdCouncil Tax: Band FEPC: D (66)

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

4 Devon Place, Mumbles, Swansea, SA3 4DR

HP Score

/ 100

Strong

Verdict

5 days ago

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

Evidence

17 of 21 sources

Sale Estimate

£448,000

£425k - £470kHigh

Estimate

£448k

Range

£425k – £470k

Rent Estimate (pcm)

£1,900

£2k - £2k

Monthly

£1,900

Yield

5.07%

Verdict

Derived from HomePortfolio scores

4 Devon Place earns an INVESTIGATE rating with HP Score 81/100. Investment score 64/100 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 Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

81/ 100

Strong

Investment Score

64/ 100

Moderate

Crime Score

15/ 100

Moderate

Walkability

No data

Transit & Bike

No data

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesListing checked 4 Nov 2026

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

Valuation edge0/15
claims [AVM -0.4% (HIGH)] → 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 (HIGH confidence) · snapshot 13 Oct 2026
- valuation_snapshotsestimate for 100100338167· as of 13 Oct 2026
Rental economics0.5/40
gross yield 5.1%; range width penalty ×0.88
- valuation_snapshotsrent estimate 1900/mo (range 1750-2050)· as of 13 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -632/mo, -33% 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 4 Nov 2026
Seller motivationNot scored
context, not scored: 0 price cut(s), 102 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 4 Nov 2026
Risk & liquidity14.6/15
273 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

£337,500£517,500

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£450,000

At the asking price

Monthly rent£1,900/mo

Evidenced range £1,750-£2,050

Interest rate5.4%

Loan to value75%

Cash required: £148,800
Net cash flow: -£203/mo
Cash on cash: -1.6%
Score at this price: 15

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.25 - 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 100100338167Valuation edge · as of 13 Oct 2026
valuation_snapshotsrent estimate 1900/mo (range 1750-2050)Rental economics · as of 13 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 4 Nov 2026
portal_listingsprice_changes + first_published_dateSeller motivation · as of 4 Nov 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 1900/mo (range 1750-2050)
Seller motivation could not be scored
context, not scored: 0 price cut(s), 102 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£448,000

Rent Estimate (pcm)£1,900

Gross Yield5.07%

1y Growth-

3y Growth+0.3%

5y Growth+2.1%

10y Growth+3.6%

Last Sold Price£300,000 (2011-10-17)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceLow
RadonModerate
MiningSignificant
LandslideModerate
Air QualityLow
NoiseWithheld

View Full Risk Report

Planning Activity

Recent Apps

0SA3 4DR

Approval Rate

-12mo

Development

low

2026/1819/FUL
Construction of a rear dormer roof extension and insertion of a conservation style rooflight to the front elevation
Pending
2026/1794/TPO
To crown reduce 1 Yew tree, fell 1 Yew tree, and remove stem of 1 Oak tree covered by TPO 092
Pending
2026/1770/FUL
Single storey rear/side extension, rear timber pergola and one rear flue
Pending

View Planning Timeline