408 Mariners Court, Lamberts Road, Swansea, SA1 8QW

UPRN:10010056744Flat/Maisonette2 bedsBuilt 2007-2011

LeaseholdCouncil Tax: -EPC: B (82)

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

408 Mariners Court, Lamberts Road, Swansea, SA1 8QW

HP Score

/ 100

Strong

Verdict

3 days ago

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

Evidence

17 of 21 sources

Sale Estimate

£172,000

£164k - £181kHigh

Estimate

£172k

Range

£164k – £181k

Rent Estimate (pcm)

£900

£850 - £950

Monthly

£900

Yield

6.75%

Verdict

Derived from HomePortfolio scores

408 Mariners Court earns an INVESTIGATE rating with HP Score 77/100. Investment score 74/100 reflects strong fundamentals. Crime intensity is 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 covenantsHM Land Registry leasesHM Land Registry Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

77/ 100

Strong

Investment Score

74/ 100

High

Crime Score

31/ 100

Moderate

Walkability

No data

Transit & Bike

No data

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesLead to verifyListing checked 5 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: leasehold with no service charge disclosed - the stress test assumes GBP 0. It ranks after every home whose inputs are verified.

Valuation edge0/15
claims [AVM +7.0% (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 10010056744· as of 13 Oct 2026
Rental economics13.7/40
gross yield 6.8%; range width penalty ×0.98
- valuation_snapshotsrent estimate 900/mo (range 850-950)· as of 13 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -144/mo, -16% of rent (6.75% on a 75% loan; no service charge or ground rent disclosed); fails the stress - earns nothing; leasehold with no service charge disclosed - the stress assumes GBP 0
- underwriting_assumptionscosts not disclosed by the advert· as of 5 Nov 2026· verify before relying on this
Seller motivationNot scored
context, not scored: 2 price cut(s), 297 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 5 Nov 2026
Risk & liquidity14.7/15
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 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£160,000

At the asking price

Monthly rent£900/mo

Evidenced range £850-£950

Interest rate5.4%

Loan to value75%

Cash required: £50,000
Net cash flow: £83/mo
Cash on cash: 2.0%
Score at this price: 28

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.67 - 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 10010056744Valuation edge · as of 13 Oct 2026
valuation_snapshotsrent estimate 900/mo (range 850-950)Rental economics · as of 13 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 5 Nov 2026 · verify before relying on this
portal_listingsprice_changes + first_published_dateSeller motivation · as of 5 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 900/mo (range 850-950)
Stress margin needs verification before you rely on it
costs not disclosed by the advert

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.
2 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£172,000

Rent Estimate (pcm)£900

Gross Yield6.75%

1y Growth+19.8%

3y Growth+1.2%

5y Growth+1.5%

10y Growth+2.0%

Last Sold Price£142,375 (2011-01-14)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceLow
RadonModerate
MiningUnknown
LandslideModerate
Air QualityLow
NoiseWithheld

View Full Risk Report

Planning Activity

Recent Apps

0SA1 8QW

Approval Rate

-12mo

Development

low

2026/1816/NMA
Construction of up to 108 residential units and associated works - Proposed non-material amendment application to vary the proposed house types as approved under planning permission 2022/1134/RES granted 14th February 2024
Pending
2026/1774/DOC
Repair, refurbishment and retrofitting - Discharge condition 6 (details of front elevation doors) of Listed Building Consent 2025/1485/S99 granted 17th October 2025
Pending
2026/1772/PND
Demolition of the Swansea Boat Men Building (application for Prior notification of Demolition)
Pending

View Planning Timeline