Ealing’s diggable stock is mostly freehold family houses, not mansion flats. Edwardian terraces and semis still often have loft or rear options; interwar houses can offer side margins and garages that buy space above ground more cheaply than excavation. Converted houses exist and fail the ownership test when subsoil sits with a freeholder. We classify stock and title before any basement ambition is treated as fixed.
Ealing Council decides these basements. Conservation pockets around Ealing Common change how front-area lightwells and street-facing works are read, but a basement is planned as a full householder application with engineering evidence regardless. Depth rules from other London boroughs are not treated as Ealing policy.
Most genuine Ealing digs are freehold houses. Where a building has been split into flats, Licence to Alter and freeholder control of structure usually stop the brief. We prove who owns the ground before commissioning boreholes.
Under a Ealing house, ground conditions are established by trial pits and boreholes on this plot — not by a finished basement two streets away — because made ground, groundwater and foundation depths drive retaining design, waterproofing grade and neighbour movement predictions here.
Semi-detached flanks dominate W5. Underpinning under an occupied neighbour, monitoring and Party Wall etc. Act awards are the programme spine. Shared drives and tree-lined approaches can block spoil compounds even when streets feel wider than inner London — access is surveyed early.
Below the existing drainage invert of a Ealing house, waterproofing is designed to BS 8102 with dual protection and pumped discharge; pumps need power, backup and lifelong servicing so rooms stay usable rather than merely dry.
Suburban Ealing gardens can look generous, yet a lightwell still spends amenity and can affect neighbour daylight on semi plots. Front lightwells near conservation streets face character scrutiny. We design the external package first so the buried floor plate does not outrun what Ealing and neighbours will accept.
On many Ealing plots a loft conversion or rear extension still delivers family space for less money and less risk than a basement under Council evidence rules. We present that comparison in pounds and programme before anyone digs a trial pit.
Pitshanger, Ealing Common and West Ealing are not interchangeable dig sites. Common-edge character, parking stress and plot depth differ; we write construction management to the street type, not to a generic W5 label.
Interwar garages and side passages sometimes offer an above-ground annex that clients mistake for ‘needing a basement’. We test those options on plan before structural fees are spent.
Ealing’s validation and evidence expectations are confirmed for the address. A statement written for Wandsworth or Hounslow is not reused here.
Where trees sit on the only practical lightwell line, we bring arboricultural input with the ground investigation so under-garden ambition is cut early if roots veto it.
A Ealing basement package is sequenced as survey, investigation, structure, Ealing drawings, party wall mapping and building regulations — approval is never promised; the goal is to remove avoidable refusal and neighbour deadlock. Clients should expect a longer pre-construction period than for a simple rear extension, and most digs are easier with the house empty for part of the works.
