31 Blue Rock Drive, Aylesbury, HP18 1AW

UPRN:766356236Detached House4 bedsBuilt 2021

FreeholdCouncil Tax: Band EEPC: B (84)

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

HP Score

/ 100

Mixed

Verdict

2 days ago

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

Evidence

20 of 21 sources

Sale Estimate

£485,000

£461k - £510kHigh

Estimate

£485k

Range

£461k – £510k

Rent Estimate (pcm)

£1,800

£2k - £2k

Monthly

£1,800

Yield

4.41%

Verdict

Derived from HomePortfolio scores

31 Blue Rock Drive earns an INVESTIGATE rating with HP Score 65/100. Investment score 60/100 reflects moderate fundamentals. Crime intensity is very low. Walkability is limited (4/100). 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 leasesHM Land Registry Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

65/ 100

Mixed

Investment Score

60/ 100

Moderate

Crime Score

14/ 100

Low

Walkability

4/ 100

Low

Transit & Bike

Transit 9Bike 38

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesListing checked 2 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 -1.0% (HIGH), sold-comps -26.3%, £/sqft -26.2%] → 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 12 Oct 2026
- valuation_snapshotsestimate for 766356236· as of 12 Oct 2026
- property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 21%· as of 17 Oct 2026
Rental economics0/40
gross yield 4.4%; range width penalty ×0.87
- valuation_snapshotsrent estimate 1800/mo (range 1650-1950)· as of 12 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -874/mo, -49% 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 2 Nov 2026
Seller motivationNot scored
context, not scored: 1 price cut(s), 56 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 2 Nov 2026
Risk & liquidity14.6/15
199 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

£367,500£563,500

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£490,000

At the asking price

Monthly rent£1,800/mo

Evidenced range £1,650-£1,950

Interest rate5.4%

Loan to value75%

Cash required: £162,800
Net cash flow: -£408/mo
Cash on cash: -3.0%
Score at this price: 15

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.09 - 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 766356236Valuation edge · as of 12 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 21%Valuation edge · as of 17 Oct 2026
valuation_snapshotsrent estimate 1800/mo (range 1650-1950)Rental economics · as of 12 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 2 Nov 2026
portal_listingsprice_changes + first_published_dateSeller motivation · as of 2 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 1800/mo (range 1650-1950)
Seller motivation could not be scored
context, not scored: 1 price cut(s), 56 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. Ask the agent why the price was reduced and whether a previous sale fell through.
1 price cut(s) recorded on the listing history.
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£485,000

Rent Estimate (pcm)£1,800

Gross Yield4.41%

1y Growth-5.8%

3y Growth+0.8%

5y Growth+1.4%

10y Growth+2.5%

Last Sold Price£387,125 (2021-08-13)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideModerate
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

0HP18 1AW

Approval Rate

-12mo

Development

low

PL/26/07674/FA
Partial conversion of the existing integral garage to provide a home office ancillary to the existing house
Pending
PL/26/07151/FA
Conversion of existing garage to habitable accommodation, replacement of garage door with double doors and enlargement of existing window.
Pending
PL/26/05349/SA
Certificate of lawfulness for proposed single storey rear extension
Pending

View Planning Timeline

Ownership

Corporate Ownership72.3%
Overseas OwnershipNo
Lease Term Remaining-
CovenantsRestrictive
Lease TypeFreehold
Last Ownership Change2021-08-13
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

1 Mbps

Mobile 4G/5G Coverage

EEThreeO2Vodafone

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£35,937

Population Density-

Owner Occupied81%

Age Distribution

0-15 30%16-64 68%65+ 2%

View Area Profile

Schools Nearby

Green Ridge Primary Academy
0.5 mi
Report card2026
Ofsted no longer awards a single overall grade.
The Aylesbury Vale Academy
0.6 mi
Good
Thomas Hickman School
1.4 mi
Good
The Pace Centre
1.8 mi
Outstanding

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

View All Schools

Comparables

View All

8 Blue Rock Drive
-
£385k
-
26 Blue Rock Drive
-
£315k
-
19 Blue Rock Drive
-
£375k
-
14 Blue Rock Drive
-
£387k
-

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