Olympia and Avonmore, and Queen's Club Gardens
West Kensington is in the London Borough of Hammersmith and Fulham, and this guide reads it through two conservation areas, Olympia and Avonmore, and Queen's Club Gardens. Together they cover about 27.9 hectares, and the figures below refer to that combined study area unless a section says otherwise.
Housing statistics are drawn from three statistical areas around the designations, so they are context rather than an exact count. Borough-level material is gathered in the Hammersmith and Fulham guide.
Public records for the two conservation areas
Every statement below links to the public record it comes from; sources were re-checked on .
Flood zones and their source
On the Environment Agency's planning flood map, 27.1% of the combined study area lies in Flood Zone 3 and 6.3% in Flood Zone 2, and the source recorded for both is the sea rather than a river.
Zones on that map leave defences out of account and are not property-level, so the national long-term flood risk checker on GOV.UK, which also shows surface water, is run for the individual address.
For basement or ground-floor flats inside the mapped zones, the inspection looks at floor levels, routes by which water could enter and any flood-resistance measures, and notes what the planning map shows without treating it as a forecast.
The designations
Planning.data.gov.uk maps Olympia and Avonmore at about 16.7 hectares and Queen's Club Gardens at about 11.2 hectares, and neither record carries a designation date.
Without a date in either planning.data.gov.uk entry, any question that turns on when conservation-area control began, such as whether an old alteration predates it, is put to the council with the property's planning history.
No direction intersecting either area appears among the Article 4 entries on planning.data.gov.uk, so Hammersmith and Fulham Council is the body to ask before permitted development rights are relied on.
The Royal Borough of Kensington and Chelsea's website has a page on the Earls Court and West Kensington Opportunity Area, which is context for the wider district rather than a record of either conservation area.
Listed entries
The NHLE point data, queried on 1 November 2026, returns 14 list entries inside the two boundaries: 12 at Grade II and 2 at Grade II*.
Those two higher-graded entries are 22 and 22A Avonmore Road and the Grand Hall and Pillar Hall, Olympia Exhibition Centre.
Listing status is confirmed in the NHLE record for each property, because one entry can cover a whole terrace or a pair of houses as readily as a single building.
The Olympia exhibition halls entry is also a reminder that list entries here include large non-residential buildings, so the total is not a count of listed homes.
Gravel, silt and clay
Every one of five sample points sits on London Clay Formation bedrock in the British Geological Survey's 1:50,000 data.
Above it, the superficial layer records Kempton Park Gravel at three points and Langley Silt, a clay and silt deposit, at the other two.
Kempton Park Gravel is free-draining sand and gravel that leaking drains can wash out, whereas Langley Silt is finer and can soften when wet, so the BGS map guides which cracking or drainage patterns are looked for rather than explaining any one building.
Where a basement has been dug or deepened, the change in loading and drainage is a separate question from the mapped units, and any party wall or structural records for that work are requested alongside the geology viewer entry.
Housing stock nearby
Three LSOAs around the conservation areas, E01001866, E01001913 and E01001870, together hold about 2,590 dwellings, according to the VOA's 2025 tables of council tax stock, with counts rounded to the nearest 10.
The VOA build-period counts date 74.1% of those dwellings to before 1900, 7.3% to 1900-1918 and 12.0% to 1919-1939, leaving only 1.9% from 1945-1972, 1.2% from 1973-1999 and 3.5% from 2000 onwards.
Flats or maisonettes are 90.7% of the stock and terraced houses 3.5% in the property-type table.
In the VOA band counts, band D is the largest at 39.8%, and bands F to H together hold 23.9%.
When a flat is part of a pre-1900 building, the lease decides who repairs the roof, main walls and drains, so those clauses are read alongside the inspection; the VOA data cannot show how any single building is divided.
These three LSOAs are a stand-in for the designations rather than their outline, so the VOA tables describe the surrounding streets, not the conservation areas alone.
Local pages by instruction type
Nine local pages cover this area, each concentrating on one instruction, and alongside them sit the practice-wide pages that set out the same services in general terms.
Surrounding guides
The Hammersmith and Fulham guide covers the borough. Neighbouring pages deal with Hammersmith, Fulham, Shepherd's Bush, Earl's Court and Kensington, each drawing on its own records.
West Kensington questions
How much of the area is in a flood zone?
The Flood Map for Planning records 27.1% of the two conservation areas in Flood Zone 3 and 6.3% in Flood Zone 2, with the sea as the source. Those zones ignore defences, so they show where planning policy applies rather than how likely an individual flat is to flood.
Is my flat in a listed building?
Check rather than assume. The NHLE data returns 14 list entries inside the two boundaries, two of them Grade II*. One entry can cover a terrace, so search for the address itself rather than relying on the street name.
Does an Article 4 direction apply?
None intersecting either conservation area appears in the planning.data.gov.uk Article 4 records, but that dataset can be incomplete. Ask Hammersmith and Fulham Council before relying on permitted development for windows, doors, roofs or front boundaries.
What lies under the streets here?
London Clay underlies all five sample points on the geological map, overlain by Kempton Park Gravel at three and Langley Silt at two. These are mapped units, not site findings; drainage leaks and tree roots still need checking at the address.
Are most homes here flats in older buildings?
In the three LSOAs used, VOA 2025 figures record 90.7% of dwellings as flats or maisonettes and date 74.1% to before 1900. Taken together, those two shares mean most dwellings must be flats in pre-1900 buildings, where the lease's repair clauses matter as much as the condition found.
What lease points matter for a flat purchase here?
Who repairs the roof, main walls, foundations and drains; how costs are shared; whether major works are planned; and what consent is needed for alterations. Bring the lease and recent service-charge accounts, so the inspection findings can be matched to whoever is responsible for each part.
How we work on an instruction
Hampstead Chartered Surveyors is a RICS-regulated firm (RICS Regulated Firm No. 923064) working from its registered Hampstead NW3 office. The firm does not claim premises, staff or completed instructions in an individual locality, and it does not treat a neighbourhood name as evidence about a particular building.
An instruction starts with the full address, the decision the client faces and the documents already available, such as leases, drawings, notices or earlier reports. The scope, fee and inspection date are confirmed in writing only after that review, and access to roofs, lofts, basements or common parts is agreed before the visit.
Reports include RICS Level 2 and Level 3 home surveys, building and defect investigations, party wall appointments, reinstatement cost assessments, contract administration and schedules of condition. Each report records what was inspected, what could not be seen and what further investigation the evidence supports.
Public datasets such as the conservation-area register, the National Heritage List for England, British Geological Survey mapping, the Environment Agency flood map and Valuation Office Agency housing statistics describe areas rather than individual properties. They frame questions before an inspection; they never replace it.
Reviewed by Savas Bulduk BSc (Hons) MRICS, Director & Chartered Building Surveyor at Hampstead Chartered Surveyors & Building Consultancy. Last reviewed: . Our people · RICS firm record