121 Windmill Drive, Croxley Green, Rickmansworth, WD3 3FB

UPRN:100080915686Semi-Detached House2 bedsBuilt 1967-1975

FreeholdCouncil Tax: Band EEPC: D (55)

Data freshness:Listing· freshPlanning· freshEPC· 6mo agoRisk· 5mo agoConnectivity· 1mo agoSchools· 1mo agoAmenities· 2mo agoArea· Census 2021

121 Windmill Drive, Croxley Green, Rickmansworth, WD3 3FB

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

£607,000

£576k - £637kHigh

Estimate

£607k

Range

£576k – £637k

Rent Estimate (pcm)

£2,150

£2k - £2k

Monthly

£2,150

Yield

4.30%

Verdict

Derived from HomePortfolio scores

121 Windmill Drive earns an INVESTIGATE rating with HP Score 78/100. Investment score 60/100 reflects moderate fundamentals. Crime intensity is very low. Walkability is limited (63/100). 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

78/ 100

Strong

Investment Score

60/ 100

Moderate

Crime Score

10/ 100

Low

Walkability

63/ 100

Moderate

Transit & Bike

Transit 11Bike 39

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesListing checked 4 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 +1.2% (HIGH), sold-comps -4.9%, £/sqft -4.9%] → 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 100080915686· as of 13 Oct 2026
- property_comparablessold-evidence family (implied value + £/sqft): 11 comps, dispersion 20.7%· as of 1 Nov 2026
Rental economics0/40
gross yield 4.3%; range width penalty ×0.78
- valuation_snapshotsrent estimate 2150/mo (range 1900-2350)· as of 13 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -1,081/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 4 Nov 2026
Seller motivationNot scored
context, not scored: 0 price cut(s), 60 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
365 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

£450,000£690,000

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£600,000

At the asking price

Monthly rent£2,150/mo

Evidenced range £1,900-£2,350

Interest rate5.4%

Loan to value75%

Cash required: £201,300
Net cash flow: -£537/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): 1.06 - 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 100080915686Valuation edge · as of 13 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 11 comps, dispersion 20.7%Valuation edge · as of 1 Nov 2026
valuation_snapshotsrent estimate 2150/mo (range 1900-2350)Rental economics · as of 13 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 2150/mo (range 1900-2350)
Seller motivation could not be scored
context, not scored: 0 price cut(s), 60 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. 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.
3. 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£607,000

Rent Estimate (pcm)£2,150

Gross Yield4.30%

1y Growth-

3y Growth+0.6%

5y Growth+1.9%

10y Growth+2.4%

Last Sold Price£181,000 (2002-05-31)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningLow
LandslideLow
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

4WD3 3FB

Approval Rate

100%12mo

Development

low

26/1769/TCA
T1 Leylandii - fell to ground level as it is causing structural damage to fence and to prevent imminent damage to neighbour's shed due to butt expansion. It is also encroaching on nearby neighbouring buildings.
Pending
26/1751/TPO
Tree Number - T1 Tree Type - Apple (Malus) Approx. Diameter at 1.5m - 0.1m Approx. Height - 5m Approx. Crown Spread Diameter - 3m Location - See map Service - Crown Reduction Work Required - Reduce height by up to 2m and lateral spread on all sides by up to 1m, back to previous pruning points, to finished crown dimensions of 3m height and 1m lateral spread. Reason - As part of continued maintenance Priority Code - ON Tree Number - T2 Tree Type - Yew (Taxus baccata) Approx. Diameter at 1.5m - 0.1m Approx. Height - 4m Approx. Spread Diameter - 2m Location - See map Service - Reduce height Work Required - Reduce height by up to 2m (confirm with client on day of works) and trim sides hard to manage encroachment into garden. Reason - As per clients request Priority Code - ON Tree Number - G1 Tree Type - Holly (Ilex aquifolium) Approx Height - 10m Location - See map Service - Cut Back Work required - Cut back all lateral growth over the garden by removing up to 1.5m. Reason - To manage encroachment into garden Priority code -ON Tree Number - G1 Tree Type - Holly (Ilex aquifolium) Approx. Diameter at 1.5m - 0.25m Approx. Height - 10m Approx. Spread Diameter - 12m Location - See map Service - Reduce height Work Required - Reduce height by approximately 1m to finished height of 9m. Reason - As per clients request Priority Code - ON Tree Number - T3 Tree Type - Leyland cypress (Cupressus x leylandii) Approx. Diameter at 1.5m - 0.25m Approx. Height - 10m Approx. Spread Diameter - 2m Location - See map Service - Reduce height Work Required - Reduce height by approximately 5m. Trim lateral spread to tidy by removing up to 1m. Reason - To manage the size of the tree. Priority Code - ON
Pending
26/1752/TPO
Tree Number - T4 Tree Type - Sycamore (Acer pseudoplatanus) Approx Height - 14m Approx Spread- 10m Location - See map, neighbours tree. Service - Cut Back Work required - Cut back all lateral growth over the clients driveway by removing up to 3m back to previous pruning points to finished spread of 7m. Reason - To manage the encroachment Priority code -ON
Pending

View Planning Timeline

Ownership

Corporate Ownership61.8%
Overseas OwnershipNo
Lease Term Remaining-
CovenantsRestrictive
Lease TypeFreehold
Last Ownership Change2002-05-31
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£39,615

Population Density1,177 /km²

Owner Occupied87%

Age Distribution

0-15 18%16-64 58%65+ 24%

View Area Profile

Schools Nearby

Rickmansworth School
0.2 mi
Outstanding
Rickmansworth Park Junior Mixed and Infant School
0.3 mi
Area grades2025
Inspected after Ofsted withdrew the single overall grade.
Harvey Road Primary School
0.4 mi
Outstanding
Saint Joan of Arc Catholic School
0.4 mi
Good

7 of 10 nearby schools with published figures were oversubscribed in 2026 - demand, not a catchment.

View All Schools

Comparables

View All

123 Windmill Drive
-
£635k
-
79 Windmill Drive
-
£504k
-
77 Windmill Drive
-
£490k
-
123 Windmill Drive
-
£500k
-

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