Flat 45, Sundial Court, Barnsbury Lane, Surbiton, KT5 9AN

UPRN:128043071Converted Flat1 bedsBuilt 2007-2011

LeaseholdCouncil Tax: Band CEPC: C (80)

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

Flat 45, Sundial Court, Barnsbury Lane, Surbiton, KT5 9AN

HP Score

/ 100

Mixed

Verdict

today

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

Evidence

20 of 21 sources

Sale Estimate

£248,000

£235k - £260kHigh

Estimate

£248k

Range

£235k – £260k

Rent Estimate (pcm)

£1,150

£1k - £1k

Monthly

£1,150

Yield

5.53%

Verdict

Derived from HomePortfolio scores

Flat 45 earns an INVESTIGATE rating with HP Score 74/100. Investment score 76/100 reflects strong fundamentals. Crime intensity is moderate. Walkability is good (80/100). 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 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

74/ 100

Mixed

Investment Score

76/ 100

High

Crime Score

52/ 100

Elevated

Walkability

80/ 100

High

Transit & Bike

Transit 47Bike 67

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesLead to verifyListing checked 4 Nov 2026

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

Check before relying on this score: leasehold with no service charge disclosed - the stress test assumes GBP 0. It ranks after every home whose inputs are verified.

Valuation edge0/15
claims [AVM -0.6% (HIGH), sold-comps -4.8%, £/sqft -4.7%] → 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 9 Oct 2026
- valuation_snapshotsestimate for 128043071· as of 9 Oct 2026
- property_comparablessold-evidence family (implied value + £/sqft): 9 comps, dispersion 18.1%· as of 23 Oct 2026
Rental economics4/40
gross yield 5.5%; range width penalty ×0.94
- valuation_snapshotsrent estimate 1150/mo (range 1050-1200)· as of 9 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -337/mo, -29% of rent (6.75% on a 75% loan; no service charge or ground rent disclosed); fails the stress - earns nothing; leasehold with no service charge disclosed - the stress assumes GBP 0
- underwriting_assumptionscosts not disclosed by the advert· as of 4 Nov 2026· verify before relying on this
Seller motivationNot scored
context, not scored: 0 price cut(s), 251 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
184 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

£187,000£287,000

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£249,500

At the asking price

Monthly rent£1,150/mo

Evidenced range £1,050-£1,200

Interest rate5.4%

Loan to value75%

Cash required: £78,640
Net cash flow: -£46/mo
Cash on cash: -0.7%
Score at this price: 19

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.37 - clears 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 128043071Valuation edge · as of 9 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 9 comps, dispersion 18.1%Valuation edge · as of 23 Oct 2026
valuation_snapshotsrent estimate 1150/mo (range 1050-1200)Rental economics · as of 9 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 4 Nov 2026 · verify before relying on this
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 1150/mo (range 1050-1200)
Stress margin needs verification before you rely on it
costs not disclosed by the advert

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£248,000

Rent Estimate (pcm)£1,150

Gross Yield5.53%

1y Growth-

3y Growth+2.8%

5y Growth+1.5%

10y Growth+1.6%

Last Sold Price£252,500 (2015-09-14)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseHigh

View Full Risk Report

Planning Activity

Recent Apps

0KT5 9AN

Approval Rate

-12mo

Development

low

26/02186/CLC
Details required for Conditions 5 (Landscape and planting plan) and 6 (Construction Management Plan) of planning permission 25/01215/FUL (Erection of a single storey rear extension, hip-to-gable roof conversion with rear dormer and installation 2nos front rooflights. Conversion of a single dwelling house into two self-contained flats)
Pending
26/02169/HOU
Erection of single-storey part front and single-storey part rear extension, demolition of rear outbuilding and erection of replacement detached outbuilding. Changes to fenestrations and addition of 2nos. side windows, with internal and external alterations.
Pending
26/02117/PAEXT
Erection of single storey rear extension (6.00m in depth, maximum height of 3.00m and eaves height of 2.70m)
Approved

View Planning Timeline

Ownership

Corporate Ownership73.5%
Overseas OwnershipNo
Lease Term Remaining112 yrs
CovenantsRestrictive
Lease TypeLeasehold
Last Ownership Change2015-09-14
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

5 Mbps

Mobile 4G/5G Coverage

EEThreeO2Vodafone

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£41,833

Population Density-

Owner Occupied43%

Age Distribution

0-15 20%16-64 68%65+ 12%

View Area Profile

Schools Nearby

Our Lady Immaculate Catholic Primary School
0.3 mi
Inspected as Our Lady Immaculate Catholic Primary School (URN 102595) on 4 Dec 2018
Knollmead Primary School
0.3 mi
Area grades2025
Inspected after Ofsted withdrew the single overall grade.
Tolworth Junior School
0.5 mi
Area grades2024
Inspected after Ofsted withdrew the single overall grade.
Tolworth Infant and Nursery School
0.5 mi
Outstanding

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

View All Schools

Comparables

View All

Sundial Court Barnsbury Lane
-
£240k
-
Sundial Court Barnsbury Lane
-
£215k
-
Sundial Court Barnsbury Lane
-
£250k
-
Sundial Court Barnsbury Lane
-
£215k
-

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