27 St Helens Avenue, Swansea, SA1 4ND

UPRN:100100354746Mid Terrace House5 bedsBuilt 1900-1929

FreeholdCouncil Tax: -EPC: E (53)

Data freshness:Planning· 3mo agoOwnership· freshEPC· 6mo agoRisk· 2y agoConnectivity· 1mo agoSchools· 1mo agoAmenities· 2mo 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

17 of 21 sources

Sale Estimate

£266,000

£253k - £280kHigh

Estimate

£266k

Range

£253k – £280k

Rent Estimate (pcm)

£1,700

£2k - £2k

Monthly

£1,700

Yield

8.00%

Verdict

Derived from HomePortfolio scores

27 St Helens Avenue earns an INVESTIGATE rating with HP Score 75/100. 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

75/ 100

Strong

Investment Score

64/ 100

Moderate

Crime Score

25/ 100

Moderate

Walkability

No data

Transit & Bike

No data

Opportunity

Why this could be an opportunity

Reduced confidence2 independent sourcesLead to verifyListing checked 4 Nov 2026

Fewer independent sources agree, or a component could not be scored.

Check before relying on this score: the advert has 7 bedrooms but the valuation snapshot describes 5 - an extension, conversion or HMO the evidence does not reflect, or a different home. It ranks after every home whose inputs are verified.

Valuation edge0/15
claims [AVM +4.1% (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 100100354746· as of 13 Oct 2026
Rental economics23.2/40
gross yield 8.0%; range width penalty ×0.96
- valuation_snapshotsrent estimate 1700/mo (range 1600-1800)· as of 13 Oct 2026· verify before relying on this
Stress margin2.6/30
stressed cash flow +44/mo, +3% of rent (6.75% on a 75% loan; no service charge or ground rent disclosed); passes the stress
- underwriting_assumptionscosts not disclosed by the advert· as of 4 Nov 2026
Seller motivationNot scored
context, not scored: 3 price cut(s), 165 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
446 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 sensitivityScores 70+ up to £197,500

£191,000£293,000

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£255,000

At the asking price

Monthly rent£1,700/mo

Evidenced range £1,600-£1,800

Interest rate5.4%

Loan to value75%

Cash required: £80,550
Net cash flow: £316/mo
Cash on cash: 4.7%
Score at this price: 40

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.98 - 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 100100354746Valuation edge · as of 13 Oct 2026
valuation_snapshotsrent estimate 1700/mo (range 1600-1800)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 reduced
fewer independent sources agree, or a component could not be scored
Rental economics needs verification before you rely on it
rent estimate 1700/mo (range 1600-1800)
Seller motivation could not be scored
context, not scored: 3 price cut(s), 165 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.
3 price cut(s) recorded on the listing history.
3. Set your walk-away price before viewing - above £197,500 the deal stops scoring well.
Computed by re-running the score at higher prices.
4. 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.

Valuation & Market

Sale Estimate£266,000

Rent Estimate (pcm)£1,700

Gross Yield8.00%

1y Growth+13.1%

3y Growth+1.2%

5y Growth+1.5%

10y Growth+2.0%

Last Sold Price£200,000 (2019-01-11)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceLow
RadonLow
MiningUnknown
LandslideModerate
Air QualityLow
NoiseWithheld

View Full Risk Report

Planning Activity

Recent Apps

2SA1 4ND

Approval Rate

100%12mo

Development

low

2026/1815/NMA
Demolition of outbuildings and construction of two detached dwellings - Non Material Amendment of Planning Permission 2016/1619 granted 5th January 2018 to allow the relocation of foul drainage only entry into the Welsh Water system - CMH1
Pending
2026/1803/TPO
To fell one English Elm tree, Crown Reduce and lop 3 no. Holm Oak Trees and one Scots Pine tree covered by TPO's 26 and 49
Pending
2026/1780/ELD
Use as a 5 bed HMO (application for a Certificate of Existing Lawful Development)
Pending

View Planning Timeline