31 St Martins, Marlborough, SN8 1AS

UPRN:100120984606Mid Terrace House2 bedsBuilt 1900-1929

FreeholdCouncil Tax: Band CEPC: D (58)

Data freshness:Listing· freshPlanning· 2mo agoOwnership· freshEPC· 6mo agoRisk· 5mo agoCrime· freshConnectivity· 1mo agoSchools· 1mo agoAmenities· 2mo agoArea· Census 2021Council Tax· 1mo ago

HP Score

/ 100

Strong

Verdict

2 days ago

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

Evidence

19 of 21 sources

Sale Estimate

£448,000

£426k - £471kHigh

Estimate

£448k

Range

£426k – £471k

Rent Estimate (pcm)

£1,700

£2k - £2k

Monthly

£1,700

Yield

4.53%

Verdict

Derived from HomePortfolio scores

31 St Martins earns an INVESTIGATE rating with HP Score 76/100. Investment score 66/100 reflects moderate fundamentals. Crime intensity is very low. Walkability is good (77/100). 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 addressDefra strategic noise mapping, England Round 4 (Contains Defra data © Crown copyright and database right 2023-2024, Open Government Licence v3.0)Walk ScoreONS Census 2021Police.ukHM Land Registry covenantsHM Land Registry leasesHM Land Registry Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

76/ 100

Strong

Investment Score

66/ 100

Moderate

Crime Score

13/ 100

Low

Walkability

77/ 100

High

Transit & Bike

Transit 19Bike 59

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesListing checked 12 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), sold-comps -31.6%, £/sqft -31.5%] → 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 14 Nov 2026
- valuation_snapshotsestimate for 100120984606· as of 14 Nov 2026
- property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 20.9%· as of 31 Oct 2026
Rental economics0/40
gross yield 4.5%; range width penalty ×0.85
- valuation_snapshotsrent estimate 1700/mo (range 1550-1850)· as of 14 Nov 2026· verify before relying on this
Stress margin0/30
stressed cash flow -779/mo, -46% 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 12 Nov 2026
Seller motivationNot scored
context, not scored: 0 price cut(s), 177 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 12 Nov 2026
Risk & liquidity14.6/15
210 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£1,700/mo

Evidenced range £1,550-£1,850

Interest rate5.4%

Loan to value75%

Cash required: £148,800
Net cash flow: -£342/mo
Cash on cash: -2.8%
Score at this price: 15

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.12 - 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 100120984606Valuation edge · as of 14 Nov 2026
property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 20.9%Valuation edge · as of 31 Oct 2026
valuation_snapshotsrent estimate 1700/mo (range 1550-1850)Rental economics · as of 14 Nov 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 12 Nov 2026
portal_listingsprice_changes + first_published_dateSeller motivation · as of 12 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
rent estimate 1700/mo (range 1550-1850)
Seller motivation could not be scored
context, not scored: 0 price cut(s), 177 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)£1,700

Gross Yield4.53%

1y Growth-

3y Growth-1.1%

5y Growth-0.6%

10y Growth+1.3%

Last Sold Price£315,000 (2014-08-08)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceModerate
RadonLow
MiningLow
LandslideLow
Air QualityLow
NoiseBelow 40 dB

View Full Risk Report

Planning Activity

Recent Apps

2SN8 1AS

Approval Rate

100%12mo

Development

low

PL/2026/07085
Proposals include hacking off 300mm from the roof deck of existing render, renewing lead work in code 5 using a Hydraulic lime mortar to seal the chase, new bell cast drip to form the new render which will be Hydraulic lime render mix to the area of hacke
Pending
PL/2026/07036
T1 Beech tree - Crown lift by removing the four lowest limbs back to source up to 6 meters from ground level.
Pending
PL/2026/06839
1. Holly- Fell to ground level- This small tree is located on the boundary of the property and is very close to the house. It is very tall and 'straggly' and will only cause problems in the future. The tree is also interfering with he boundary fence to cr
Pending

View Planning Timeline

Ownership

Corporate Ownership70.7%
Overseas OwnershipNo
Lease Term Remaining-
CovenantsRestrictive
Lease TypeFreehold
Last Ownership Change2014-08-08
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

19 Mbps

Mobile 4G/5G Coverage

EEThreeO2Vodafone

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£31,873

Population Density3,143 /km²

Owner Occupied42%

Age Distribution

0-15 17%16-64 62%65+ 21%

View Area Profile

Schools Nearby

Marlborough St Mary's CE Primary School
0.5 mi
Inspected as St Mary's Church of England Infant School, Marlborough (URN 126339) on 19 Mar 2015
St John's Marlborough
0.6 mi
Area grades2025
Inspected after Ofsted withdrew the single overall grade.
Marlborough College
0.7 mi
Inspected by ISI
Preshute Church of England Primary School
1.4 mi
GoodConcerns

3 of 13 nearby schools with published figures were oversubscribed in 2026 - demand, not a catchment.

View All Schools

Comparables

View All

Hillcrest St Martins
-
£499k
-
34 St Martins
-
£390k
-
30 St Martins
-
£300k
-
52 St Martins
-
£499k
-

Boundary data not available for this property

No registered title polygon, building footprint, or street match for this property yet.

Why: No HMLR INSPIRE / OSM footprint / OS Open USRN match for this UPRN

Source: HM Land Registry INSPIRE / OpenStreetMap / OS Open USRN