18 Blenheim Avenue, Stony Stratford, Milton Keynes, MK11 1EX

UPRN:25001193Semi-Detached HouseBeds -Built 1900-1929

Tenure: -Council Tax: Band EEPC: E (42)

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

18 Blenheim Avenue, Stony Stratford, Milton Keynes, MK11 1EX

HP Score

/ 100

Strong

Verdict

2 days ago

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

Evidence

17 of 21 sources

Sale Estimate

£472,000

£425k - £519kMedium

Estimate

£472k

Range

£425k – £519k

Rent Estimate (pcm)

£1,950

£2k - £2k

Monthly

£1,950

Yield

4.25%

Verdict

Derived from HomePortfolio scores

18 Blenheim Avenue earns an INVESTIGATE rating with HP Score 78/100. Investment score 63/100 reflects moderate fundamentals. Crime intensity is very low. Walkability is limited (62/100). Flood risk is not assessed: check the Environment Agency long-term flood map before offering. 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)Defra 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

78/ 100

Strong

Investment Score

63/ 100

Moderate

Crime Score

8/ 100

Low

Walkability

62/ 100

Moderate

Transit & Bike

Transit 9Bike 59

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 edge-0.6/15
claims [AVM -16.5% (MEDIUM), sold-comps -22.5%, £/sqft -22.4%] → 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 12 Oct 2026
- valuation_snapshotsestimate for 25001193· as of 12 Oct 2026
- property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 6.2%· as of 29 Oct 2026
Rental economics0/40
gross yield 4.3%; range width penalty ×0.84
- valuation_snapshotsrent estimate 1950/mo (range 1800-2150)· as of 12 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -1,017/mo, -52% 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: 0 price cut(s), 39 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 & liquidity12.9/15
125 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

£412,500£632,500

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£550,000

At the asking price

Monthly rent£1,950/mo

Evidenced range £1,800-£2,150

Interest rate5.4%

Loan to value75%

Cash required: £183,800
Net cash flow: -£506/mo
Cash on cash: -3.3%
Score at this price: 12

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.05 - 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 25001193Valuation edge · as of 12 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 6.2%Valuation edge · as of 29 Oct 2026
valuation_snapshotsrent estimate 1950/mo (range 1800-2150)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 1950/mo (range 1800-2150)
Seller motivation could not be scored
context, not scored: 0 price cut(s), 39 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£472,000

Rent Estimate (pcm)£1,950

Gross Yield4.25%

1y Growth-

3y Growth+5.0%

5y Growth-0.1%

10y Growth+1.4%

Last Sold Price-

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

0MK11 1EX

Approval Rate

-12mo

Development

low

TEST/2026/1975
TEST
Pending
PLN/2026/2093
Erection of a new SEND educational block and community centre together with associated, parking, hard and soft landscaping
Pending
PLN/2026/2085
Prune the excessive growth on the width of the Thuja tree in the back garden by reducing the lateral branches that trespass on the house by approximately 2m and non-trespassing laterals to balance
Pending

View Planning Timeline

Ownership

Corporate Ownership61.4%
Overseas OwnershipNo
Lease Term Remaining-
CovenantsRestrictive
Lease Type-
Last Ownership Change-
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

18 Mbps

Mobile 4G/5G Coverage

EEThreeO2Vodafone

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£36,061

Population Density3,963 /km²

Owner Occupied80%

Age Distribution

0-15 15%16-64 52%65+ 33%

View Area Profile

Schools Nearby

Russell Street School
0.4 mi
OutstandingImproving
St Mary and St Giles Church of England School
0.5 mi
Good
St Mary Magdalene Catholic Primary School
0.9 mi
Area grades2025
Inspected after Ofsted withdrew the single overall grade.
Fairfields Primary School
1.0 mi
Good

4 of 13 nearby schools with published figures were oversubscribed in 2026 - demand, not a catchment.

View All Schools

Comparables

View All

26 Blenheim Avenue
-
£275k
-
46 Blenheim Avenue
-
£330k
-
36 Blenheim Avenue
-
£350k
-
42 Blenheim Avenue
-
£295k
-

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