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Apartment 27, 66 Chiltern Street, London, W1U 4EJ

UPRN:10033640411Flat/MaisonetteBeds -Built -
LeaseholdCouncil Tax: Band GEPC: B (87)
Data freshness:Listing· freshListing: fresh, refreshed yesterday (2026-11-07T04:00:05.687115+00:00)Planning· 4mo agoPlanning: stale, refreshed 4mo ago (2026-07-10T09:11:32.948224+00:00)Ownership· freshOwnership: fresh, refreshed 2d ago (2026-11-06T17:34:01.679477+00:00)EPC· 6mo agoEPC: stale, refreshed 6mo ago (2026-05-20T10:58:39.129138+00:00)Risk· 5mo agoRisk: stale, refreshed 5mo ago (2026-06-18T00:00:00+00:00)Connectivity· 1mo agoConnectivity: ageing, refreshed 1mo ago (2026-10-03T06:43:10.905825+00:00)Schools· 1mo agoSchools: ageing, refreshed 1mo ago (2026-10-06T08:24:30.427161+00:00)Amenities· 2mo agoAmenities: ageing, refreshed 2mo ago (2026-09-23T00:00:00+00:00)Area· Census 2021Area: static reference data (Census 2021); authoritative and does not refresh
Apartment 27, 66 Chiltern Street, London, W1U 4EJ

HP Score

Mixed
Verdict
yesterday
  • Verdict: INVESTIGATE, on a scale of Buy, Investigate, Avoid.

    Mixed signals - investigate

Evidence
20 of 21 sources
Sale Estimate
£5,849,000
£5.26M - £6.43MMedium
Estimate
£5.85M
Range
£5.26M – £6.43M
Rent Estimate (pcm)
£18,550
£17k - £21k
Monthly
£18,550
Yield
3.81%

Verdict

Derived from HomePortfolio scores

Apartment 27 earns an INVESTIGATE rating with HP Score 69/100. Investment score 82/100 reflects strong fundamentals. Crime intensity is elevated. Walkability is excellent (100/100). 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
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HP Score
69/ 100
Mixed
Investment Score
82/ 100
High
Crime Score
100/ 100
Elevated
Walkability
100/ 100
Excellent
Transit & Bike
Transit 100Bike 71
Walk Score, out of 100

Valuation & Market

Sale Estimate£5,849,000
Rent Estimate (pcm)£18,550
Gross Yield3.81%
1y Growth-24.0%
3y Growth-6.2%
5y Growth-2.6%
10y Growth-1.3%
Last Sold Price£5,750,000 (2026-01-06)
View Market Details

Risk Overview

  • Flood RiskUnknown
  • SubsidenceSignificant
  • RadonLow
  • MiningUnknown
  • LandslideLow
  • Air QualityLow
  • NoiseModerate
View Full Risk Report

Planning Activity

Recent Apps
0W1U 4EJ
Approval Rate
-12mo
Development
low
  • 26/07416/LBC
    Amalgamation of Flats 3 and 4 to form one single dwelling including associated internal reconfiguration and refurbishments, alterations to access arrangements and improvements to the existing terrace and private amenity spaces. Together with the removal and alteration of modern partitions, roof replacement, rebuilding of the roof terrace, new plant and addition of a new staircase, structural works, new window openings, and other associated works. (Linked with 26/07415/FULL)
    Pending
  • 26/07415/FULL
    Amalgamation of Flats 3 and 4 (Use Class C3) to form one single dwelling (Use Class C3) including associated internal reconfiguration and refurbishments, alterations to access arrangements and improvements to the existing terrace and private amenity spaces, new plant and other associated works. (Linked with 26/07416/LBC)
    Pending
  • 26/07390/LBC
    Installation of a non-illuminated fascia sign measuring 0.29m x 0.79m and two vinyl signs applied to inside face of the glazed shopfront each measuring 0.22m x 0.84m. (Linked with 26/06970/ADV)
    Pending
View Planning Timeline

Ownership

  • Corporate Ownership15.2%
  • Overseas OwnershipNo
  • Lease Term Remaining999+ yrs
  • CovenantsRestrictive
  • Lease TypeLeasehold
  • Last Ownership Change2026-01-06
  • 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£45,172
Population Density-
Owner Occupied36%
Age Distribution
0-15 10%16-64 76%65+ 14%
View Area Profile

Schools Nearby

  • ICS London
    0.2 mi
    Inspected by ISI
  • The St Marylebone CofE School
    0.2 mi
    Area grades2025

    Inspected after Ofsted withdrew the single overall grade.

  • St Vincent's Catholic Primary School
    0.2 mi

    Inspected as St Vincent's Catholic Primary School (URN 101143) on 23 Nov 2023

  • St Mary's Bryanston Square CofE School
    0.3 mi
    GoodConcerns

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

View All Schools

Comparables

View All
  • Chiltern Place, 66 Chiltern Street
    -
    £5.75M
    -
  • Chiltern Place, 66 Chiltern Street
    -
    £9.70M
    -
  • 66 Chiltern Street
    -
    £300k
    -
  • Chiltern Place, 66 Chiltern Street
    -
    £5.38M
    -