Planning · England · Free to use

Urban Greening Factor calculator

London Plan Policy G5 score from surface types and areas, against the 0.4 residential or 0.3 commercial target.

London Plan (2021) and Urban Greening Factor LPG (2023)

Your inputs

Results update as you type.

Predominant use

Residential (target 0.4)Commercial (target 0.3)

Total site area (m²)

m²

Semi-natural vegetation, woodland (1.0) (m²)

m²

Wetland or open water, semi-natural (1.0) (m²)

m²

Intensive green roof, 150 mm+ substrate (0.8) (m²)

m²

Trees in pits, soil volume ≥ ⅔ canopy area (0.8) (m²)

m²

Extensive green roof, 80 mm+ substrate (0.7) (m²)

m²

Flower-rich perennial planting (0.7) (m²)

m²

Rain gardens and vegetated SuDS (0.7) (m²)

m²

Hedges (0.6) (m²)

m²

Trees in pits, smaller soil volume (0.6) (m²)

m²

Green wall (0.6) (m²)

m²

Groundcover planting (0.5) (m²)

m²

Amenity grassland, mown lawn (0.4) (m²)

m²

Sedum mat roof, lightweight (0.3) (m²)

m²

Chlorinated water or unplanted basin (0.2) (m²)

m²

Permeable paving (0.1) (m²)

m²

Planning · Result

UGF 0.4

Meets the 0.4 target with 970 weighted m² on a 2,400 m² site.

Checks passed

Trees, large soil volume: Calculated result180 m² × 0.8144
Extensive green roof: Calculated result620 m² × 0.7434
Flower-rich perennials: Calculated result140 m² × 0.798
Rain gardens and SuDS: Calculated result60 m² × 0.742
Hedges: Calculated result40 m² × 0.624
Green wall: Calculated result90 m² × 0.654
Groundcover: Calculated result80 m² × 0.540
Amenity grassland: Calculated result260 m² × 0.4104
Permeable paving: Calculated result300 m² × 0.130
Sealed surfaces (0): Calculated resultremainder630 m²
Urban Greening Factor: Checks passedtarget 0.40.4

Score = sum of (factor × area) ÷ total site area (para 8.5.6). Retained green cover counts (Policy G5 C).
Tree areas are the projected mature canopy area. Boroughs may set their own targets in local plans.

Clauses this relies on

Source edition and scope

London Plan (2021) and Urban Greening Factor LPG (2023).

This is a preliminary check of the conditions shown. Confirm the edition, project circumstances and any additional requirements with your architect or building control.

A design aid, not legal advice. Checked against the Building Regulations 2010 for England; confirm with building control.