Flat A, 11 Anderson Street, London, SW3 3LZ

UPRN:217001636Flat/Maisonette3 bedsBuilt before 1900

Tenure: -Council Tax: -EPC: D (68)

Data freshness:Listing· freshPrice Paid· freshPlanning· freshOwnership· freshEPC· 3mo agoRisk· 5mo agoConnectivity· 1mo agoSchools· 1mo agoAmenities· 2mo agoArea· Census 2021

Flat A, 11 Anderson Street, London, SW3 3LZ

HP Score

/ 100

Strong

Verdict

today

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

Evidence

18 of 21 sources

Sale Estimate

£1,641,000

£1.56M - £1.72MHigh

Estimate

£1.64M

Range

£1.56M – £1.72M

Rent Estimate (pcm)

£7,450

£7k - £8k

Monthly

£7,450

Yield

5.96%

Verdict

Derived from HomePortfolio scores

Flat A earns an INVESTIGATE rating with HP Score 82/100. Investment score 68/100 reflects moderate fundamentals. Crime intensity is low. Walkability is excellent (99/100). 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)Defra 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

82/ 100

Strong

Investment Score

68/ 100

Moderate

Crime Score

19/ 100

Moderate

Walkability

99/ 100

Excellent

Transit & Bike

Transit 74Bike 71

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesListing checked 5 Nov 2026

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

Valuation edge0/15
claims [AVM +8.6% (HIGH)] → 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 13 Oct 2026
- valuation_snapshotsestimate for 217001636· as of 13 Oct 2026
Rental economics6.5/40
gross yield 6.0%; range width penalty ×0.85
- valuation_snapshotsrent estimate 7450/mo (range 6800-8100)· as of 13 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -982/mo, -13% 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 5 Nov 2026
Seller motivationNot scored
context, not scored: 1 price cut(s), 101 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 5 Nov 2026
Risk & liquidity14.6/15
190 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

£1,125,000£1,725,000

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£1,500,000

At the asking price

Monthly rent£7,450/mo

Evidenced range £6,800-£8,100

Interest rate5.4%

Loan to value75%

Cash required: £545,050
Net cash flow: £95/mo
Cash on cash: 0.2%
Score at this price: 21

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.47 - 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 217001636Valuation edge · as of 13 Oct 2026
valuation_snapshotsrent estimate 7450/mo (range 6800-8100)Rental economics · as of 13 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 5 Nov 2026
portal_listingsprice_changes + first_published_dateSeller motivation · as of 5 Nov 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
Rental economics needs verification before you rely on it
rent estimate 7450/mo (range 6800-8100)
Seller motivation could not be scored
context, not scored: 1 price cut(s), 101 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.
1 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£1,641,000

Rent Estimate (pcm)£7,450

Gross Yield5.96%

1y Growth-

3y Growth-9.5%

5y Growth-4.5%

10y Growth-2.4%

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

1SW3 3LZ

Approval Rate

0%12mo

Development

low

26/07305/FULL
Installation of an external condenser at roof level and internal insulation, replacement sashes and crittall windows/doors. Internal alterations.
Pending
26/07306/LBC
Installation of an external condenser and internal insulation, replacement sashes and crittall windows/doors, complete with minor internal alterations. (Linked to 26/07305/FULL)
Pending
26/07295/TCA
Magnolia in the rear garden- Reduce crown by 1.5 Metres on North, west and southern aspects Lift crown to a height of 3 Metres from ground level This tree has a twin stem that twist across each other, with a bark inclusion at the division, reducing the crown will reduce forces at the division reducing the risk of the tree failing at this point during storm condition. In addition the tree has out grown its position in the small garden and the crown reduction would be in keeping with the character and dimensions of the garden
Pending

View Planning Timeline

Ownership

Corporate Ownership32.6%
Overseas OwnershipNo
Lease Term Remaining-
CovenantsNone
Lease Type-
Last Ownership Change-
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

19 Mbps

Mobile 4G/5G Coverage

EEThreeO2Vodafone

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£46,690

Population Density14,570 /km²

Owner Occupied35%

Age Distribution

0-15 17%16-64 68%65+ 15%

View Area Profile

Schools Nearby

Marlborough Primary School
0.1 mi
Area grades2024
Inspected after Ofsted withdrew the single overall grade.
St. Thomas More Language College
0.1 mi
Inspected as Saint Thomas More Language College (URN 100502) on 24 May 2022
St Joseph's Catholic Primary School
0.1 mi
Outstanding
Sussex House School
0.3 mi
Inspected by ISI

3 of 6 nearby schools with published figures were oversubscribed in 2026 - demand, not a catchment.

View All Schools

Comparables

View All

10 Anderson Street
-
£1.32M
-
10 Anderson Street
-
£600k
-
10 Anderson Street
-
£245k
-

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