🇬🇧 United Kingdom Walthamstow Willow House — Planning & Building Regulations — single dwelling (PROJECT / DRAFT) (8 sheets, auto-generated from bim.json v1)Ctrl/Cmd+P
⚠ DRAFT / TEMPLATE — not a legal application
Document auto-generated from bim.json v1 — this is not a planning application. A real submission requires: (1) confirming Planning Permission or Permitted Development (GPDO 2015), (2) a Building Regulations full-plans / building notice application, (3) location & block plans, elevations and sections, (4) compliance with the Approved Documents.
Planning & Building Regulations — single dwelling (PROJECT / DRAFT)
Local Planning Authority (LPA) + Building Control
Project
Walthamstow Willow House
Site address
St Johns Road, Walthamstow E17, UK
Applicant / Owner
_______________________
Stories
2
Structure
timber-frame bungalow
Site area
237.60 m²
Building footprint
79.39 m²
Gross floor area
118.80 m²
Required documents / dossier
Document
Status
Basis
Planning application form (or Lawful Development Certificate)
✗ to prepare
Town & Country Planning Act 1990
Location plan (1:1250)
✗ to prepare
DMPO 2015
Block / site plan (1:500)
✓ auto
DMPO 2015
Existing & proposed elevations
✓ auto
DMPO 2015
Existing & proposed floor plans / sections
✓ auto
DMPO 2015
Building Regulations full-plans application
✗ to prepare
Building Act 1984
✓ auto = generated from /api/showcase/u-walthamstowwillowhou-xgei6uex/bim.json (open BIM-JSON).
Drawings carry Japanese annotations from the BIM source — dimensions and geometry are jurisdiction-neutral.
Code compliance summary
Item
Code reference
Result
Daylight (glazing 42.4% of floor area, target ≥ 10.0%)
Approved Doc O / BS EN 17037 (≈ 1/10)
✓ Complies
Purge ventilation (openable 14.5% of floor area, target ≥ 5.0%)
Approved Document F
✓ Complies
Site coverage (computed 33.4%)
Local plan policy
— verify with LPA
Maximum height
Permitted Development / local plan
— verify with LPA
Daylight (Approved Doc O — glazing ≈ 1/10 of floor area): window 62.55 m² / floor 147.62 m² = 42.4%
Purge ventilation (Approved Doc F — openable ≈ 1/20)
Computed from BIM geometry by houki-engine (open source). District-specific zoning limits
(height / coverage / setbacks) must be verified with the local authority before filing.