20 Grendon Gardens, Wembley, HA9 9NE

UPRN:202093404Detached House4 bedsBuilt 1930-1949

FreeholdCouncil Tax: Band GEPC: C (78)

Data freshness:Listing· freshPrice Paid· freshEPC· 4mo agoRisk· 5mo agoConnectivity· 1mo agoSchools· 1mo agoAmenities· 1mo 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

19 of 21 sources

Sale Estimate

£1,039,000

£987k - £1.09MHigh

Estimate

£1.04M

Range

£987k – £1.09M

Rent Estimate (pcm)

£3,950

£4k - £4k

Monthly

£3,950

Yield

4.03%

Verdict

Derived from HomePortfolio scores

20 Grendon Gardens earns an INVESTIGATE rating with HP Score 79/100. Investment score 73/100 reflects strong fundamentals. Crime intensity is low. Walkability is good (73/100). 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

79/ 100

Strong

Investment Score

73/ 100

High

Crime Score

28/ 100

Moderate

Walkability

73/ 100

High

Transit & Bike

Transit 69Bike 40

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesLead to verifyListing checked 4 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: the advert has 6 bedrooms but the valuation snapshot describes 4 - 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-1.6/15
claims [AVM -13.1% (HIGH), sold-comps -64.1%, £/sqft -64.2%] → measured edge -0.33pp 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 (HIGH confidence) · snapshot 9 Oct 2026
- valuation_snapshotsestimate for 202093404· as of 9 Oct 2026
- property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 18.4%· as of 23 Oct 2026
Rental economics0/40
gross yield 4.0%; range width penalty ×0.77
- valuation_snapshotsrent estimate 3950/mo (range 3550-4400)· as of 9 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -2,184/mo, -55% 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 4 Nov 2026
Seller motivationNot scored
context, not scored: 0 price cut(s), 141 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
256 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

£881,000£1,351,000

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£1,175,000

At the asking price

Monthly rent£3,950/mo

Evidenced range £3,550-£4,400

Interest rate5.4%

Loan to value75%

Cash required: £415,050
Net cash flow: -£1,231/mo
Cash on cash: -3.6%
Score at this price: 13

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.00 - 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 202093404Valuation edge · as of 9 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 18.4%Valuation edge · as of 23 Oct 2026
valuation_snapshotsrent estimate 3950/mo (range 3550-4400)Rental economics · as of 9 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

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 3950/mo (range 3550-4400)
Seller motivation could not be scored
context, not scored: 0 price cut(s), 141 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£1,039,000

Rent Estimate (pcm)£3,950

Gross Yield4.03%

1y Growth-

3y Growth-1.6%

5y Growth-0.6%

10y Growth+2.7%

Last Sold Price£870,000 (2016-01-28)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

1HA9 9NE

Approval Rate

-12mo

Development

low

26/2765
T1 Purple Leaved Plum - Lift crown to 4m over deployment only, T2 Goat Willow - Remove to facilitate development, T3 Plum - Lift crown to 4m over development only, T4 Plum - Lift crown to 4m over development only, T5 Leyland Cypress - No works, T6 Purple Leaved Plum - Lift crown to 4m over development only, T7 Purple Leaved Plum - Lift crown to 4m over development only, T8 Hawthorn - No works, T9 Ash - No works.
Pending
26/2729
Erection of single storey side extension for a covered winter terrace with new entrance lobby, removal of entrance lobby to front with installation of new fire door, relocation of 2x accessible bays and existing booth window to side, insertion of cycle hoops to front, removal of 5x parking spaces, bollards, signages, alteration to fenestration & side patio, replacement of height restrictors to rear, formations of dropped kerbs to side, repainting of existing shopfront frames and roof and internal reconfiguration to drive thru of restaurant.
Pending
26/2731
Advertisement consent for installation of 3x static internally illuminated freestanding signs and 1x static internally illuminated 15-inch digital screen to drive thru of restaurant.
Pending

View Planning Timeline

Ownership

Corporate Ownership47.2%
Overseas OwnershipNo
Lease Term Remaining-
CovenantsRestrictive
Lease TypeFreehold
Last Ownership Change2016-01-28
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

16 Mbps

Mobile 4G/5G Coverage

EEThreeO2Vodafone

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£34,871

Population Density-

Owner Occupied69%

Age Distribution

0-15 17%16-64 67%65+ 16%

View Area Profile

Schools Nearby

Ark Academy
0.1 mi
Report card2026
Ofsted no longer awards a single overall grade.
Preston Manor School
0.3 mi
Good
Michaela Community School
0.3 mi
Outstanding
Lycee International de Londres
0.3 mi
Inspected by ISI

3 of 11 nearby schools with published figures were oversubscribed in 2026 - demand, not a catchment.

View All Schools

Comparables

View All

45 Grendon Gardens
-
£900k
-
21 Grendon Gardens
-
£1.05M
-
32 Grendon Gardens
-
£1.15M
-
45 Grendon Gardens
-
£835k
-

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