35 Blackberry Lane, Four Marks, Alton, GU34 5BP

UPRN:1710006418Detached House5 bedsBuilt 1991-1995

FreeholdCouncil Tax: -EPC: C (75)

Data freshness:Listing· freshPlanning· 4mo agoOwnership· freshEPC· 4mo agoRisk· 5mo agoConnectivity· 1mo agoSchools· 1mo agoAmenities· 2mo agoArea· Census 2021

35 Blackberry Lane, Four Marks, Alton, GU34 5BP

HP Score

/ 100

Mixed

Verdict

today

Verdict: INVESTIGATE, on a scale of Buy, Investigate, Avoid.
Mixed signals - investigate

Evidence

18 of 21 sources

Sale Estimate

£1,315,000

£1.25M - £1.38MHigh

Estimate

£1.31M

Range

£1.25M – £1.38M

Rent Estimate (pcm)

£4,700

£4k - £5k

Monthly

£4,700

Yield

4.18%

Verdict

Derived from HomePortfolio scores

35 Blackberry Lane earns an INVESTIGATE rating with HP Score 70/100. Investment score 62/100 reflects moderate fundamentals. Crime intensity is very low. Walkability is limited (38/100). 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 Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

70/ 100

Mixed

Investment Score

62/ 100

Moderate

Crime Score

5/ 100

Low

Walkability

38/ 100

Mixed

Transit & Bike

Transit 15Bike 25

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesListing checked 6 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 -2.7% (HIGH), sold-comps -15.1%, £/sqft -15.1%] → 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 9 Nov 2026
- valuation_snapshotsestimate for 1710006418· as of 9 Nov 2026
- property_comparablessold-evidence family (implied value + £/sqft): 7 comps, dispersion 12.1%· as of 2 Nov 2026
Rental economics0/40
gross yield 4.2%; range width penalty ×0.73
- valuation_snapshotsrent estimate 4700/mo (range 4150-5250)· as of 9 Nov 2026· verify before relying on this
Stress margin0/30
stressed cash flow -2,371/mo, -50% 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 6 Nov 2026
Seller motivationNot scored
context, not scored: 0 price cut(s), 169 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 6 Nov 2026
Risk & liquidity14.6/15
332 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

£1,012,500£1,552,500

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£1,350,000

At the asking price

Monthly rent£4,700/mo

Evidenced range £4,150-£5,250

Interest rate5.4%

Loan to value75%

Cash required: £485,050
Net cash flow: -£1,302/mo
Cash on cash: -3.2%
Score at this price: 15

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 1710006418Valuation edge · as of 9 Nov 2026
property_comparablessold-evidence family (implied value + £/sqft): 7 comps, dispersion 12.1%Valuation edge · as of 2 Nov 2026
valuation_snapshotsrent estimate 4700/mo (range 4150-5250)Rental economics · as of 9 Nov 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 6 Nov 2026
portal_listingsprice_changes + first_published_dateSeller motivation · as of 6 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 4700/mo (range 4150-5250)
Seller motivation could not be scored
context, not scored: 0 price cut(s), 169 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£1,315,000

Rent Estimate (pcm)£4,700

Gross Yield4.18%

1y Growth-

3y Growth+4.0%

5y Growth+0.7%

10y Growth+1.9%

Last Sold Price£950,000 (2017-09-20)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceModerate
RadonModerate
MiningLow
LandslideModerate
Air QualityLow
NoiseBelow 40 dB

View Full Risk Report

Planning Activity

Recent Apps

0GU34 5BP

Approval Rate

-12mo

Development

low

EHDC-26-0534-EIA
EIA Screening request for proposed development at Land Off Alton Way, Four Marks, Hampshire. This request is made pursuant of Regulation 6 of the Town and Country Planning (Environmental Impact Assessment) Regulations 2017 (as updated) (‘the 2017 EIA Regulations’)
Pending
EHDC-26-0523-DCON
Discharge Condition 4 - foul and surface water of approved application EHDC-25-0143-FUL - Detached dwelling following demolition of existing dwelling
Pending
EHDC-26-0518-TPO
T1 - Quercus Robur - Common Oak - Thin canopy to a maximum of 20% volume. Wound size to remain below 70mm T2, T3 and T4 - Faguis sylvatiga - Common Beech - Thin canopy to a maximum of 20% volume. Wound size to remain below 70mm
Pending

View Planning Timeline