Flat 3, 42 Bonnington Square, London, SW8 1TQ

UPRN:200000494145Flat/Maisonette2 bedsBuilt before 1900

Tenure: -Council Tax: -EPC: D (57)

Data freshness:Price Paid· freshPlanning· 4mo agoEPC· 6mo agoRisk· 5mo agoConnectivity· 1mo agoAmenities· 1mo agoArea· Census 2021

Flat 3, 42 Bonnington Square, London, SW8 1TQ

HP Score

/ 100

Mixed

Verdict

3 days ago

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

Evidence

19 of 21 sources

Sale Estimate

£586,000

£469k - £703kLow

Estimate

£586k

Range

£469k – £703k

Rent Estimate (pcm)

£2,400

£2k - £3k

Monthly

£2,400

Yield

5.34%

Verdict

Derived from HomePortfolio scores

Flat 3 earns an INVESTIGATE rating with HP Score 60/100. Investment score 63/100 reflects moderate fundamentals. Crime intensity is elevated. Walkability is excellent (93/100). 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)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 leasesHM Land Registry Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

60/ 100

Mixed

Investment Score

63/ 100

Moderate

100

Crime Score

100/ 100

Elevated

Walkability

93/ 100

Excellent

Transit & Bike

Transit 86Bike 79

Walk Score, out of 100

Opportunity

Not scored as an opportunity

We will not put a number on this one.

headline score requires valuation_edge (estimate confidence LOW below scoring floor)

What we could establish

Rental economics2.2/40
gross yield 5.3%; range width penalty ×0.82
- valuation_snapshotsrent estimate 2400/mo (range 2200-2650)· as of 13 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -642/mo, -27% 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 29 Oct 2026· verify before relying on this
Risk & liquidity9.3/15
268 sales/12mo in area; valuation range width 40%
- property_intelligencetransactions_12mo

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£539,500

At the asking price

Monthly rent£2,400/mo

Evidenced range £2,200-£2,650

Interest rate5.4%

Loan to value75%

Cash required: £180,125
Net cash flow: -£159/mo
Cash on cash: -1.1%
Score at this price: -

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.32 - 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_snapshotsrent estimate 2400/mo (range 2200-2650)Rental economics · as of 13 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 29 Oct 2026 · verify before relying on this
portal_listingsprice_changes + first_published_dateSeller motivation · as of 29 Oct 2026
property_intelligencetransactions_12moRisk & liquidity

Sold comparables in depth

Risks

What could kill this deal

Score confidence is low
largely a single source - treat the number as a prompt, not a conclusion
Valuation edge could not be scored
estimate confidence LOW below scoring floor
Rental economics needs verification before you rely on it
rent estimate 2400/mo (range 2200-2650)

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.
1 price cut(s) recorded on the listing history.
3. Fill the valuation edge gap before relying on the score.
estimate confidence LOW below scoring floor
4. 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£586,000

Rent Estimate (pcm)£2,400

Gross Yield5.34%

1y Growth-

3y Growth-15.5%

5y Growth-2.2%

10y Growth-1.6%

Last Sold Price£277,000 (2001-07-02)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

0SW8 1TQ

Approval Rate

-12mo

Development

low

26/03163/LB
Application for Listed Building Consent for internal alteration including removal of internal partitions and a door, reposition of staircase and amending of kitchen layout.
Pending
26/03122/TCA
T1 - Acer sp. - Reduce by 1m from branch tips back to previous points
Pending
26/03109/NMC
Non-Material Amendment Following a Grant of Planning Permission ref: 25/02795/FUL (Change of use from hostel for use by single homeless men (Sui Generis) to hostel for use as visitor accommodation (Sui Generis) and associated external works including cycle parking and a refuse store) granted 12.10.2026. Amendment sought: Rewording of conditon 15 from "209 bed spaces" to "253 bed spaces" Rewording of condition 19 from "no fewer than 16 cycle parking spaces" to no fewer than 20" Changes in the ground floor and elevation lightwell plans (condition 2)
Pending

View Planning Timeline

Ownership

Corporate Ownership35.1%
Overseas OwnershipNo
Lease Term Remaining-
CovenantsNone
Lease Type-
Last Ownership Change2001-07-02
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

17 Mbps

Mobile 4G/5G Coverage

EEThreeO2Vodafone

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£43,666

Population Density-

Owner Occupied25%

Age Distribution

0-15 8%16-64 80%65+ 12%

View Area Profile

Schools Nearby

St Anne's Catholic Primary School
0.1 mi
Report card2026
Ofsted no longer awards a single overall grade.
St Mark's Church of England Primary School
0.2 mi
Good
Lilian Baylis Technology School
0.2 mi
Outstanding
Wyvil Primary School and Resource Bases for Speech, Language and Communication Needs, and Autism
0.3 mi
Good

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

View All Schools

Comparables

View All

50B Bonnington Square
-
£535k
-
32B Bonnington Square
-
£932k
-
52 Bonnington Square
-
£1.82M
-
26 Bonnington Square
-
£580k
-

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