Flat 2, Onslow House, 1 Crummock Chase, Surbiton, KT6 4NP

UPRN:128030430Flat/Maisonette1 bedsBuilt 1930-1949

LeaseholdCouncil Tax: -EPC: D (60)

Data freshness:Listing· freshPrice Paid· freshPlanning· 2mo agoEPC· 6mo agoRisk· 5mo agoConnectivity· 1mo agoSchools· freshAmenities· 1mo agoArea· Census 2021

Flat 2, Onslow House, 1 Crummock Chase, Surbiton, KT6 4NP

HP Score

/ 100

Mixed

Verdict

today

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

Evidence

18 of 21 sources

Sale Estimate

£342,000

£325k - £360kHigh

Estimate

£342k

Range

£325k – £360k

Rent Estimate (pcm)

£1,450

£1k - £2k

Monthly

£1,450

Yield

4.35%

Verdict

Derived from HomePortfolio scores

Flat 2 earns an INVESTIGATE rating with HP Score 50/100. Investment score 58/100 reflects moderate fundamentals. Crime intensity is elevated. Walkability is limited (41/100). Flood risk is not assessed: check the Environment Agency long-term flood map before offering. Tenure is leasehold. Every figure here comes from the live HomePortfolio API; anything it does not publish is left out.

Key SourcesEPC RegisterPortal listingsMarket 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

50/ 100

Mixed

Investment Score

58/ 100

Moderate

Crime Score

96/ 100

Elevated

Walkability

41/ 100

Mixed

Transit & Bike

Transit 63Bike 59

Walk Score, out of 100

Opportunity

Not scored as an opportunity

We will not put a number on this one.

listing is 'Sold subject to contract' - sale already progressing, not an actionable opportunity

Withholding a score is deliberate. A number built on missing or stale inputs would look more certain than the evidence allows.

Economics

What happens to your money

Your assumptions

Purchase price£400,000

At the asking price

Monthly rent£1,450/mo

Evidenced range £1,350-£1,600

Interest rate5.4%

Loan to value75%

Cash required: £131,300
Net cash flow: -£346/mo
Cash on cash: -3.2%
Score at this price: -

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.07 - below the usual 1.25 test. These are your assumptions, not evidence: only the pre-filled rent and price come from the record.

Risks

What could kill this deal

Score confidence is low
largely a single source - treat the number as a prompt, not a conclusion

Property risk deep-dive →flood, subsidence, crime, environment - the full domain

Plan

Before you offer

1. 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£342,000

Rent Estimate (pcm)£1,450

Gross Yield4.35%

1y Growth-

3y Growth-0.1%

5y Growth-0.4%

10y Growth+0.8%

Last Sold Price-

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseModerate

View Full Risk Report

Planning Activity

Recent Apps

0KT6 4NP

Approval Rate

-12mo

Development

low

26/02309/NMA
Application for a Non-Material Amendment to Planning Permission ref: 25/01574/FUL (Change of use from care home (Use Class C2) to a large House in Multiple Occupation (HMO) providing specialist supported accommodation for vulnerable individuals (Use Class Sui Generis), including associated external alterations, changes to fenestration, provision of refuse storage, vehicle and cycle parking, landscaping and plant). Amendment to relocate the refuse and recycling store.
Pending
26/02293/TCA
T1540: (Goat Willow) - Pollard - Previous pollard height.
Pending
26/02290/TCA
T2: Yew - Cut back to fence line on No. 5 side
Pending

View Planning Timeline

Ownership

Corporate Ownership58.6%
Overseas OwnershipNo
Lease Term Remaining104 yrs
CovenantsRestrictive
Lease TypeLeasehold
Last Ownership Change-
SourceLand Registry

View Ownership Details

Connectivity

Broadband (-)

Mobile 4G/5G Coverage

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£41,833

Population Density8,917 /km²

Owner Occupied33%

Age Distribution

0-15 11%16-64 77%65+ 12%

View Area Profile

Schools Nearby

St Andrew's and St Mark's CofE Junior School
0.2 mi
Report card2026
Ofsted no longer awards a single overall grade.
Maple Infants' School
0.2 mi
Good
Lime Tree Primary School
0.3 mi
Good
The Hollyfield School and Sixth Form Centre
0.5 mi
Inspected as The Hollyfield School and Sixth Form Centre (URN 102600) on 11 May 2011

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

View All Schools

Comparables

View All

Onslow House, 1 Crummock Chase
-
£320k
-
Crown House, 3 Crummock Chase
-
£470k
-
Crown House, 3 Crummock Chase
-
£365k
-

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