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Flat 16, Quassia House, 36 Thonrey Close, London, NW9 4EE

UPRN:10093992011Purpose Built Flat3 bedsBuilt -
LeaseholdCouncil Tax: Band EEPC: B (87)
Data freshness:Listing· freshListing: fresh, refreshed yesterday (2026-11-04T04:00:06.345886+00:00)Price Paid· freshPrice Paid: fresh, refreshed 3d ago (2026-11-01T10:00:48.330989+00:00)Planning· 4mo agoPlanning: stale, refreshed 4mo ago (2026-07-10T09:12:08.706938+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· 1mo agoAmenities: ageing, refreshed 1mo ago (2026-09-23T00:00:00+00:00)Area· Census 2021Area: static reference data (Census 2021); authoritative and does not refreshCouncil Tax· 4mo agoCouncil Tax: stale, refreshed 4mo ago (2026-07-11T10:03:02.717914+00:00)
Flat 16, Quassia House, 36 Thonrey Close, London, NW9 4EE

HP Score

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

    Mixed signals - investigate

Evidence
20 of 21 sources
Sale Estimate
£573,000
£545k - £602kHigh
Estimate
£573k
Range
£545k – £602k
Rent Estimate (pcm)
£2,950
£3k - £3k
Monthly
£2,950
Yield
6.18%

Verdict

Derived from HomePortfolio scores

Flat 16 earns an INVESTIGATE rating with HP Score 72/100. Investment score 68/100 reflects moderate fundamentals. Crime intensity is low. Walkability is limited (39/100). 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
72/ 100
Mixed
Investment Score
68/ 100
Moderate
Crime Score
18/ 100
Moderate
Walkability
39/ 100
Mixed
Transit & Bike
Transit 48Bike 41
Walk Score, out of 100

Valuation & Market

Sale Estimate£573,000
Rent Estimate (pcm)£2,950
Gross Yield6.18%
1y Growth-
3y Growth-4.0%
5y Growth-1.2%
10y Growth+0.7%
Last Sold Price£550,000 (2019-05-22)

Risk Overview

  • Flood RiskUnknown
  • SubsidenceSignificant
  • RadonLow
  • MiningUnknown
  • LandslideLow
  • Air QualityLow
  • NoiseHigh

Planning Activity

Recent Apps
0NW9 4EE
Approval Rate
-12mo
Development
low
  • 26/3905/ADV
    Installation of internally illuminated suspended entrance sign
    Pending
  • 26/3898/FUL
    Replacement of the existing main roof covering. Installation of a permanent roof edge protection system. Repairs to rainwater goods. Adaptations to the existing lightning protection system to accommodate roof changes. Provision of infrastructure to facilitate the future installation of photovoltaic (PV) solar panels. Improved main roof access via a staircase rather than existing hooped ladders.
    Pending
  • 26/3858/HSE
    Single storey rear extension. New front porch
    Pending

Ownership

  • Corporate Ownership34.1%
  • Overseas OwnershipNo
  • Lease Term Remaining999+ yrs
  • CovenantsRestrictive
  • Lease TypeLeasehold
  • Last Ownership Change2019-05-22
  • SourceLand Registry

Connectivity

Broadband (Standard)
28 Mbps
Mobile 4G/5G Coverage
EEThreeO2Vodafone
EV Charger
-
PTAL Rating
-

Area Profile

Median EarningsLocal authority£39,239
Population Density-
Owner Occupied50%
Age Distribution
0-15 17%16-64 78%65+ 5%

Schools Nearby

  • North London Grammar School
    0.3 mi
    Inspected by ISI
  • Colindale Primary School
    0.3 mi
    Good
  • Beis Yaakov Primary School
    0.5 mi
    -
  • Saracens High School
    0.5 mi
    Good

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

Comparables

View All
  • Quassia House 36 Thonrey Close
    -
    £635k
    -
  • Quassia House, 36 Thonrey Close
    -
    £610k
    -
  • Quassia House, 36 Thonrey Close
    -
    £615k
    -
  • Quassia House, 36 Thonrey Close
    -
    £380k
    -