Flat 18, Quassia House, 36 Thonrey Close, London, NW9 4EE
UPRN:10093992013Flat/MaisonetteBeds -Built -
LeaseholdCouncil Tax: Band EEPC: B (87)
Data freshness:Listing· 4mo agoListing: stale, refreshed 4mo ago (2026-07-13T02:58:05.759783+00:00)Price Paid· freshPrice Paid: fresh, refreshed 6d ago (2026-11-01T10:00:48.330989+00:00)Planning· 4mo agoPlanning: stale, refreshed 4mo ago (2026-07-10T09:12:08.706938+00:00)Ownership· freshOwnership: fresh, refreshed today (2026-11-06T17:41:53.203824+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· freshSchools: fresh, refreshed yesterday (2026-11-05T17:42:09.721250+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 refreshCouncil Tax· 4mo agoCouncil Tax: stale, refreshed 4mo ago (2026-07-11T10:03:02.717914+00:00)
HP Score
72
/ 100
Mixed
Verdict
today
- Verdict: INVESTIGATE, on a scale of Buy, Investigate, Avoid.
Mixed signals - investigate
Evidence
20 of 21 sourcesSale Estimate
£580,000
£551k - £609kHigh
Estimate
£580k
Range
£551k – £609k
Rent Estimate (pcm)
£2,950
£3k - £3k
Monthly
£2,950
Yield
6.10%
Verdict
Derived from HomePortfolio scores
Flat 18 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
72
HP Score
72/ 100
Mixed
68
Investment Score
68/ 100
Moderate
18
Crime Score
18/ 100
Moderate
39
Walkability
39/ 100
Mixed
Transit & Bike
Transit 48Bike 41
Walk Score, out of 100
Valuation & Market
Sale Estimate£580,000
Rent Estimate (pcm)£2,950
Gross Yield6.10%
1y Growth-
3y Growth-4.0%
5y Growth-1.2%
10y Growth+0.7%
Last Sold Price£610,000 (2022-07-01)
Risk Overview
- Flood RiskUnknown
- SubsidenceSignificant
- RadonLow
- MiningUnknown
- LandslideLow
- Air QualityLow
- NoiseHigh
Planning Activity
Recent Apps
0NW9 4EE
Approval Rate
-12mo
Development
low
- Pending26/3993/CONSubmission of details for partial discharge of condition 27 (Architectural Details - Phase 01A) in relation to building B06 pursuant to planning permission 24/1746/S73 dated 29/11/24
- Pending26/3956/ADVInstallation of 1no. externally illuminated fascia sign (Part retrospective)
- Pending26/3969/CONSubmission of details for partial discharge of condition 28 (Details of Roof Structures) in relation to building B06 pursuant to planning permission 24/1746/S73 dated 29/11/24
Ownership
- Corporate Ownership34.1%
- Overseas OwnershipNo
- Lease Term Remaining999+ yrs
- CovenantsRestrictive
- Lease TypeLeasehold
- Last Ownership Change2022-07-01
- 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
- Inspected by ISINorth London Grammar School0.3 mi
- Colindale Primary School0.3 miGood
- -Beis Yaakov Primary School0.5 mi
- Saracens High School0.5 miGood
5 of 11 nearby schools with published figures were oversubscribed in 2026 - demand, not a catchment.
Comparables
- Quassia House 36 Thonrey Close-£635k-
- Quassia House, 36 Thonrey Close-£610k-
- Quassia House, 36 Thonrey Close-£615k-
- Quassia House, 36 Thonrey Close-£380k-