18 Siareys Close, Chinnor, OX39 4EF

UPRN:10033012289Mid Terrace House2 bedsBuilt 2003-2006

FreeholdCouncil Tax: Band CEPC: C (77)

Data freshness:Listing· freshPrice Paid· freshPlanning· 2mo agoEPC· 6mo agoRisk· 5mo agoConnectivity· 1mo agoSchools· 1mo agoAmenities· 1mo agoArea· Census 2021Council Tax· 3mo ago

HP Score

/ 100

Strong

Verdict

yesterday

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

Evidence

20 of 21 sources

Sale Estimate

£393,000

£374k - £413kHigh

Estimate

£393k

Range

£374k – £413k

Rent Estimate (pcm)

£1,250

£1k - £1k

Monthly

£1,250

Yield

4.17%

Verdict

Derived from HomePortfolio scores

18 Siareys Close earns an INVESTIGATE rating with HP Score 75/100. Investment score 68/100 reflects moderate fundamentals. Crime intensity is very low. Walkability is limited (58/100). 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

75/ 100

Strong

Investment Score

68/ 100

Moderate

Crime Score

14/ 100

Low

Walkability

58/ 100

Moderate

Transit & Bike

Transit 24Bike 26

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence1 independent sourceListing checked 4 Nov 2026

This rests largely on a single source. Treat the score as a prompt to investigate, not a conclusion.

Valuation edge0.9/15
claims [AVM +8.4% (HIGH), sold-comps +1.1%, £/sqft +1.2%] → measured edge +0.18pp 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 10033012289· as of 13 Oct 2026
- property_comparablessold-evidence family (implied value + £/sqft): 6 comps, dispersion 7.8%· as of 17 Oct 2026
Rental economics0/40
gross yield 4.2%; range width penalty ×0.72
- valuation_snapshotsrent estimate 1250/mo (range 1100-1400)· as of 13 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -730/mo, -58% 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: 3 price cut(s), 126 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 & liquidity14.7/15
91 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

£270,000£414,000

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£360,000

At the asking price

Monthly rent£1,250/mo

Evidenced range £1,100-£1,400

Interest rate5.4%

Loan to value75%

Cash required: £117,300
Net cash flow: -£350/mo
Cash on cash: -3.6%
Score at this price: 16

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.03 - 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 10033012289Valuation edge · as of 13 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 6 comps, dispersion 7.8%Valuation edge · as of 17 Oct 2026
valuation_snapshotsrent estimate 1250/mo (range 1100-1400)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 1250/mo (range 1100-1400)
Seller motivation could not be scored
context, not scored: 3 price cut(s), 126 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.
3 price cut(s) recorded on the listing history.
3. 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.
4. Commission a full structural survey, not a basic condition report.
The score prices market evidence, not the fabric of the building.

Valuation & Market

Sale Estimate£393,000

Rent Estimate (pcm)£1,250

Gross Yield4.17%

1y Growth-

3y Growth+2.1%

5y Growth+1.6%

10y Growth+2.8%

Last Sold Price£345,000 (2021-11-24)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonModerate
MiningLow
LandslideLow
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

1OX39 4EF

Approval Rate

0%12mo

Development

low

P26/S4994/HH
Garage conversion with part single storey side extension to front of garage and part single storey rear extension (Schedule 1 application under the 2026 Regulations)
Pending
P26/S4665/HH
Installation of replacement escape pavement light and erection of front boundary railings and gate.
Pending
P26/S4430/LDP
Proposed loft conversion.
Pending

View Planning Timeline

Ownership

Corporate Ownership76.1%
Overseas OwnershipNo
Lease Term Remaining-
CovenantsRestrictive
Lease TypeFreehold
Last Ownership Change2021-11-24
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£43,026

Population Density658 /km²

Owner Occupied69%

Age Distribution

0-15 23%16-64 63%65+ 14%

View Area Profile

Schools Nearby

St Andrew's Church of England Primary School, Chinnor
0.1 mi
Area grades2024
Inspected after Ofsted withdrew the single overall grade.
Mill Lane Community Primary School
0.4 mi
Area grades2025
Inspected after Ofsted withdrew the single overall grade.
Aston Rowant Church of England Primary School
1.7 mi
Good
Stokenchurch Primary School
2.9 mi
Area grades2024
Inspected after Ofsted withdrew the single overall grade.

7 of 14 nearby schools with published figures were oversubscribed in 2026 - demand, not a catchment.

View All Schools

Comparables

View All

20 Siareys Close
-
£380k
-
31 Siareys Close
-
£375k
-
27 Siareys Close
-
£423k
-
22 Siareys Close
-
£385k
-

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