Greenwich basements only make sense under houses that still control the ground after above-ground options are checked. The local grain is period houses near the park, town centre and riverside. Flats and multi-lease conversions usually fail ownership before engineering starts; we prove title early so fees are not spent on a freeholder refusal.
Greenwich basements are decided by Royal Borough of Greenwich. Greenwich planning with World Heritage and conservation overlays nearby. External lightwells mean a full householder application with engineering evidence — we will not treat a Greenwich dig as permitted development or import depth rules from another borough.
In Greenwich, ownership kills more digs than soil does. Freehold single-family houses can support a coordinated package; leasehold flats and multi-unit conversions usually need Licence to Alter and may not control subsoil. Leases are read before sections are drawn.
Under a Greenwich 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.
Greenwich neighbour risk is dominated by slope, park-edge trees and tourist-core access constraints. Sequenced underpinning, monitoring and Party Wall etc. Act awards are on the critical path; spoil access is a feasibility gate, not a tender footnote.
Below the existing drainage invert of a Greenwich 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.
Greenwich lightwells are the half of the application neighbours and Royal Borough of Greenwich actually see. Remaining garden depth, trees, guarding and daylight decide whether habitable rooms below ground are realistic; the buried plate is cut to fit those external works, not the other way around.
Before a Greenwich dig we test whether rear and loft works often more realistic than digs. Where that path still exists it is usually cheaper and less neighbour-intense than excavation under Royal Borough of Greenwich basement evidence rules.
Distinctive to Greenwich: period houses near the park, town centre and riverside combined with slope, park-edge trees and tourist-core access constraints. That pairing changes bay sequences, spoil routing and which households must be served notices before excavation.
How Greenwich planning with World Heritage and conservation overlays nearby meets the site compound in Greenwich: if the lightwell eats a short garden or trees block the only access, the floor plate shrinks until external works are buildable toward Blackheath.
Do not copy a dig from Blackheath or Deptford into Greenwich by postcode similarity — Royal Borough of Greenwich evidence thresholds and local grain differ street by street.
Construction hours and vehicle routing on Greenwich streets are written into the package early, because neighbour awards and Royal Borough of Greenwich construction-management expectations often gate the start on site more than the decision notice does.
Greenwich World Heritage and tourist-core access constraints are SE10-specific: spoil and concrete routes more often fight visitor traffic and park-edge parking stress than inland Blackheath village lanes.
Unlike Blackheath pins that may sit in Lewisham, Greenwich basements stay under Royal Borough of Greenwich validation lists — we do not paste a dual-borough location-plan narrative onto a pure RBG freehold.
Riverside flood and level notes appear on some Greenwich pins and not on heath-edge Blackheath plots; drainage evidence follows the actual contour, not SE postcode similarity.
Greenwich programmes sequence conservation/World Heritage sensitivity → freehold subsoil → lightwell → structure. Tourist-core construction hours are written before awards freeze dig dates.
Greenwich is Royal Borough of Greenwich — not Westminster basement Article 4 culture. We refuse to import Victoria station-edge or Pimlico Cubitt-terrace dig narratives into SE10 park-and-riverside pins.
Maritime and park-edge tourist pressure on construction hours is an RBG programme item that central SW1 dig packs do not automatically carry.
A Greenwich basement package is sequenced as survey, investigation, structure, Royal Borough of Greenwich 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.
