Flat 4, 19 Chalcot Square, London, NW1 8YA

UPRN:5115850Converted Flat2 bedsBuilt before 1900

FreeholdCouncil Tax: Band GEPC: C (72)

Data freshness:Listing· freshPrice Paid· freshEPC· 6mo agoRisk· 5mo agoConnectivity· 1mo agoAmenities· 1mo agoArea· Census 2021Council Tax· 6mo ago

Flat 4, 19 Chalcot Square, London, NW1 8YA

HP Score

/ 100

Strong

Verdict

3 days ago

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

Evidence

20 of 21 sources

Sale Estimate

£1,753,000

£1.58M - £1.93MMedium

Estimate

£1.75M

Range

£1.58M – £1.93M

Rent Estimate (pcm)

£8,750

£8k - £9k

Monthly

£8,750

Yield

5.25%

Verdict

Derived from HomePortfolio scores

Flat 4 earns an INVESTIGATE rating with HP Score 80/100. Investment score 71/100 reflects strong fundamentals. Crime intensity is moderate. Walkability is excellent (97/100). Flood risk is not assessed: check the Environment Agency long-term flood map before offering. Tenure is freehold. 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

80/ 100

Strong

Investment Score

71/ 100

High

Crime Score

39/ 100

Elevated

Walkability

97/ 100

Excellent

Transit & Bike

Transit 66Bike 78

Walk Score, out of 100

Opportunity

Why this could be an opportunity

Low confidence0 independent sourcesLead to verifyListing checked 31 Oct 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-0.6/15
claims [AVM -14.1% (MEDIUM)] → measured edge -0.12pp 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 (MEDIUM confidence) · snapshot 9 Oct 2026
- valuation_snapshotsestimate for 5115850· as of 9 Oct 2026
Rental economics1.8/40
gross yield 5.2%; range width penalty ×0.89
- valuation_snapshotsrent estimate 8750/mo (range 8050-9400)· as of 9 Oct 2026· verify before relying on this
Stress margin0/30
stressed cash flow -2,136/mo, -24% 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 31 Oct 2026· verify before relying on this
Seller motivationNot scored
context, not scored: 0 price cut(s), 397 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 31 Oct 2026
Risk & liquidity12.8/15
284 sales/12mo in area; valuation range width 20%
- 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

£1,500,000£2,000,000

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£2,000,000

At the asking price

Monthly rent£8,750/mo

Evidenced range £8,050-£9,400

Interest rate5.4%

Loan to value75%

Cash required: £755,050
Net cash flow: -£692/mo
Cash on cash: -1.1%
Score at this price: 14

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 1.30 - 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 5115850Valuation edge · as of 9 Oct 2026
valuation_snapshotsrent estimate 8750/mo (range 8050-9400)Rental economics · as of 9 Oct 2026 · verify before relying on this
underwriting_assumptionscosts not disclosed by the advertStress margin · as of 31 Oct 2026 · verify before relying on this
portal_listingsprice_changes + first_published_dateSeller motivation · as of 31 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
Rental economics needs verification before you rely on it
rent estimate 8750/mo (range 8050-9400)
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£1,753,000

Rent Estimate (pcm)£8,750

Gross Yield5.25%

1y Growth-

3y Growth-9.6%

5y Growth-2.1%

10y Growth-0.7%

Last Sold Price£875,000 (2006-08-15)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseLow

View Full Risk Report

Planning Activity

Recent Apps

20NW1 8YA

Approval Rate

100%12mo

Development

medium

2026/4814/T
REAR GARDEN: 1 x Birch (T1) - Reduce branches overhanging rear neighbour back to boundary, approx. 1m reduction and reduce height by approx. 1m to match other birch tree, shaping top edge of crown to balance shape. 1 x Birch (T2) - Reduce branches overhanging rear neighbour back to boundary, approx. 1m reduction. FRONT GARDEN: 1 x Privet hedge (T3) - Trim top with hedge cutters to promote denser growth.
Pending
2026/4813/T
REAR GARDEN: 1 x Robina (T1) - Crown reduction back to previous pruning points, approx. 3m reduction. 1 x Cypress hedge (T2) - Tidy with hedge trimmers.
Pending
2026/4819/T
FRONT GARDEN: 1 x Ceanothus (T4) - Lift overhanging branches away from privet hedge, creating 1m clearance.
Pending

View Planning Timeline

Ownership

Corporate Ownership36.5%
Overseas OwnershipNo
Lease Term Remaining-
CovenantsRestrictive
Lease TypeFreehold
Last Ownership Change2006-08-15
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

12 Mbps

Mobile 4G/5G Coverage

EEThreeO2Vodafone

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£44,088

Population Density-

Owner Occupied43%

Age Distribution

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

View Area Profile

Schools Nearby

Haverstock School
0.3 mi
-
Primrose Hill School
0.3 mi
Good
St Paul's Church of England Primary School
0.3 mi
Report card2026
Ofsted no longer awards a single overall grade.
Hampstead Fine Arts College
0.4 mi
Inspected by ISI

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

View All Schools

Comparables

View All

27 Chalcot Square
-
£980k
-
14 Chalcot Square
-
£9.90M
-
15 Chalcot Square
-
£13.00M
-
32A Chalcot Square
-
£885k
-

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