4 Gonville Crescent, Northolt, UB5 4SJ

UPRN:12047599Mid Terrace House2 bedsBuilt 1930-1949

FreeholdCouncil Tax: Band DEPC: D (57)

Data freshness:Listing· freshPrice Paid· freshPlanning· 2mo agoEPC· 4mo agoRisk· 5mo agoConnectivity· 1mo agoSchools· 1mo agoAmenities· 1mo agoArea· Census 2021Council Tax· 6mo ago

HP Score

/ 100

Strong

Verdict

today

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

Evidence

19 of 21 sources

Sale Estimate

£546,000

£492k - £601kMedium

Estimate

£546k

Range

£492k – £601k

Rent Estimate (pcm)

£2,850

£3k - £3k

Monthly

£2,850

Yield

4.89%

Verdict

Derived from HomePortfolio scores

4 Gonville Crescent earns an INVESTIGATE rating with HP Score 81/100. Investment score 77/100 reflects strong fundamentals. Crime intensity is very low. Walkability is limited (59/100). 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 company ownershipHM Land Registry covenantsHM Land Registry Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

81/ 100

Strong

Investment Score

77/ 100

High

Crime Score

13/ 100

Low

Walkability

59/ 100

Moderate

Transit & Bike

Transit 50Bike 40

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesLead to verifyListing checked 31 Oct 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: the advert has 4 bedrooms but the valuation snapshot describes 2 - an extension, conversion or HMO the evidence does not reflect, or a different home. It ranks after every home whose inputs are verified.

Valuation edge-0.6/15
claims [AVM -28.2% (MEDIUM), sold-comps -36.5%, £/sqft -36.4%] → measured edge -0.12pp of the ask; on later-registered sales an AVM discount carried no edge and a sold-evidence gap at most +0.5pp; asking more than 10% above the estimate (measured -0.33pp)
Market estimate used (MEDIUM confidence) · snapshot 9 Oct 2026
- valuation_snapshotsestimate for 12047599· as of 9 Oct 2026
- property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 22.6%· as of 4 Nov 2026
Rental economics0/40
gross yield 4.9%; range width penalty ×0.92
- valuation_snapshotsrent estimate 2850/mo (range 2650-3050)· as of 9 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -988/mo, -35% 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 31 Oct 2026
Seller motivationNot scored
context, not scored: 0 price cut(s), 86 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 31 Oct 2026
Risk & liquidity12.8/15
221 sales/12mo in area; valuation range width 20%
- 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

£525,000£805,000

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£700,000

At the asking price

Monthly rent£2,850/mo

Evidenced range £2,650-£3,050

Interest rate5.4%

Loan to value75%

Cash required: £236,300
Net cash flow: -£389/mo
Cash on cash: -2.0%
Score at this price: 12

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.21 - 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 12047599Valuation edge · as of 9 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 22.6%Valuation edge · as of 4 Nov 2026
valuation_snapshotsrent estimate 2850/mo (range 2650-3050)Rental economics · as of 9 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 31 Oct 2026
portal_listingsprice_changes + first_published_dateSeller motivation · as of 31 Oct 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 2850/mo (range 2650-3050)
Seller motivation could not be scored
context, not scored: 0 price cut(s), 86 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£546,000

Rent Estimate (pcm)£2,850

Gross Yield4.89%

1y Growth-1.6%

3y Growth+0.6%

5y Growth-0.7%

10y Growth+2.1%

Last Sold Price£77,500 (1996-06-06)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

6UB5 4SJ

Approval Rate

80%12mo

Development

low

263989PALHE
Single storey (Max 6m deep and Max 3.15m high) rear extension (42 days Prior Notification Process)
Pending
263850PALHE
Single storey rear extension (max 6m deep and max 2.83 (following part demolition of rear extension) (42 Days Prior Approval Notification Process)
Pending
263815PALHE
Single storey (Max 6m deep and Max 3m high) rear extension (42 days Prior Notification Process)
Pending

View Planning Timeline

Ownership

Corporate Ownership55.3%
Overseas OwnershipNo
Lease Term Remaining-
CovenantsRestrictive
Lease TypeFreehold
Last Ownership Change1996-06-06
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

8 Mbps

Mobile 4G/5G Coverage

EEThreeO2Vodafone

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£35,665

Population Density11,072 /km²

Owner Occupied65%

Age Distribution

0-15 18%16-64 69%65+ 13%

View Area Profile

Schools Nearby

Petts Hill Primary School
0.3 mi
Good
Greenwood Primary School
0.5 mi
Good
Wood End Primary School
0.6 mi
Requires improvement
Belvue School
0.6 mi
Report card2026
Ofsted no longer awards a single overall grade.

2 of 12 nearby schools with published figures were oversubscribed in 2026 - demand, not a catchment.

View All Schools

Comparables

View All

59 Gonville Crescent
-
£595k
-
65 Gonville Crescent
-
£445k
-
85 Gonville Crescent
-
£515k
-
46 Gonville Crescent
-
£575k
-

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