17 Westwood House, 47 Old Devonshire Road, London, SW12 9RF

UPRN:10091500919Purpose Built Flat2 bedsBuilt -

LeaseholdCouncil Tax: Band DEPC: B (89)

Data freshness:Listing· freshPlanning· 4mo agoOwnership· freshEPC· 6mo agoRisk· 5mo agoConnectivity· 1mo agoSchools· freshAmenities· 2mo agoArea· Census 2021Council Tax· 6mo ago

17 Westwood House, 47 Old Devonshire Road, London, SW12 9RF

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

£674,000

£640k - £708kHigh

Estimate

£674k

Range

£640k – £708k

Rent Estimate (pcm)

£3,800

£4k - £4k

Monthly

£3,800

Yield

6.08%

Verdict

Derived from HomePortfolio scores

17 Westwood House earns an INVESTIGATE rating with HP Score 85/100. Investment score 74/100 reflects strong fundamentals. Crime intensity is low. Walkability is excellent (91/100). 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

85/ 100

Strong

Investment Score

74/ 100

High

Crime Score

15/ 100

Moderate

Walkability

91/ 100

Excellent

Transit & Bike

Transit 47Bike 64

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesLead to verifyListing checked 7 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 edge-1.6/15
claims [AVM -11.3% (HIGH), sold-comps -21.8%, £/sqft -21.7%] → measured edge -0.33pp 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 (HIGH confidence) · snapshot 9 Oct 2026
- valuation_snapshotsestimate for 10091500919· as of 9 Oct 2026
- property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 10.7%· as of 6 Nov 2026
Rental economics8.1/40
gross yield 6.1%; range width penalty ×0.94
- valuation_snapshotsrent estimate 3800/mo (range 3550-4050)· as of 9 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -501/mo, -13% 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 7 Nov 2026· verify before relying on this
Seller motivationNot scored
context, not scored: 0 price cut(s), 164 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 7 Nov 2026
Risk & liquidity14.6/15
320 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

£562,500£862,500

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£750,000

At the asking price

Monthly rent£3,800/mo

Evidenced range £3,550-£4,050

Interest rate5.4%

Loan to value75%

Cash required: £253,800
Net cash flow: £100/mo
Cash on cash: 0.5%
Score at this price: 21

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.50 - 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 10091500919Valuation edge · as of 9 Oct 2026
property_comparablessold-evidence family (implied value + £/sqft): 12 comps, dispersion 10.7%Valuation edge · as of 6 Nov 2026
valuation_snapshotsrent estimate 3800/mo (range 3550-4050)Rental economics · as of 9 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 7 Nov 2026 · verify before relying on this
portal_listingsprice_changes + first_published_dateSeller motivation · as of 7 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 3800/mo (range 3550-4050)
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£674,000

Rent Estimate (pcm)£3,800

Gross Yield6.08%

1y Growth+0.6%

3y Growth-2.2%

5y Growth-0.2%

10y Growth+0.6%

Last Sold Price£675,000 (2024-11-08)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

0SW12 9RF

Approval Rate

-12mo

Development

low

26/03219/NMC
Non-Material Amendment Following a Grant of Planning Permission ref: 20/02678/VOC (Variation of condition 2 (Approved Plans) of appeal decision APP/N5660/W/19/3225699 following planning application 16/03148/FUL (Redevelopment of the site involving demolition of existing retail warehouse and associated outbuildings (use class B8) and erection of 8 x 2 storey detached family houses with lower ground floor (use class C3), together with the provision of car parking spaces, cycle storage and landscaping) allowed on 10.02.2020.) dated 17.12.2020 Amendments Sought: Repositioning of basement level party wall to sit under flank wall and not halfway between properties
Pending
26/03213/TCA
T1 Robinia sp. (x1) Reduce crown by 2.5-3m off height and width. Reason: Lost two stems in October. The branches had weak unions with the old pollard head, causing them to fail under their own weight. T2 Robinia sp. (x1) Reduce crown by 1.5m all around. Reason: To lessen the load on the crown. T3 Robinia sp. (x1) Reduce crown by 1m all around. Reason: To lessen the load on the crown.
Pending
26/03140/FUL
Installation of 1x DRS container unit within newly erected pod.
Pending

View Planning Timeline

Ownership

Corporate Ownership62.8%
Overseas OwnershipNo
Lease Term Remaining111 yrs
CovenantsRestrictive
Lease TypeLeasehold
Last Ownership Change2024-11-08
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

22 Mbps

Mobile 4G/5G Coverage

EEThreeO2Vodafone

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£49,310

Population Density16,296 /km²

Owner Occupied52%

Age Distribution

0-15 13%16-64 77%65+ 10%

View Area Profile

Schools Nearby

Alderbrook Primary School
0.1 mi
Good
Balham Nursery School
0.2 mi
Area grades2025
Inspected after Ofsted withdrew the single overall grade.
Chestnut Grove Academy
0.3 mi
GoodImproving
La Retraite Roman Catholic Girls' School
0.3 mi
Outstanding

4 of 8 nearby schools with published figures were oversubscribed in 2026 - demand, not a catchment.

View All Schools

Comparables

View All

Westwood House, 47 Old Devonshire Road
-
£700k
-
Westwood House, 47 Old Devonshire Road
-
£525k
-
Westwood House, 47 Old Devonshire Road
-
£670k
-
Westwood House, 47 Old Devonshire Road
-
£675k
-

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