Shadow Diagrams for
London Planning Applications.
shadow diagrams for planning applications across every London borough — from a Camden rear extension to a multi-storey scheme in Vauxhall Nine Elms. Fixed prices from £280. First draft in 48 hours. Full BRE 209 daylight & sunlight assessments (VSC/APSH/NSL) join the London service line in late August 2026 — enquire to reserve a slot.
We read your borough's validation checklist before we model a single shadow
Daylight, sunlight and shadow evidence that survives London's toughest planning officers.
Inner-London boroughs — Camden, Westminster, Kensington & Chelsea, Islington, Hackney, Southwark, Tower Hamlets — apply BRE 209 in some of the densest, most heavily contested planning contexts in the country. Officers see a shadow diagram a day. We build ours to survive scrutiny the first time: correct reference dates, a full BRE 209 methodology statement, and geometry matched exactly to your submitted drawings.
Everything your London planning application requires
One fixed price. No hidden extras. No surprise charges for additional time-points or revision rounds.
Shadow Footprints at Required Dates
Shadow diagrams at the equinox (21 March / 21 September) and winter solstice (21 December) at the times your borough requires — typically 9am, 12pm and 3pm, or 8am–4pm hourly for larger schemes. Existing and proposed shadows distinguished by colour.
BRE 209 Methodology Statement
Written methodology note confirming software and sun-path model, OS grid reference, applicable BRE 209 criteria, reference dates and times, and true north basis. Ready to include in your Design and Access Statement.
VSC / APSH / NSL Analysis
Where required by your borough, full Vertical Sky Component, Annual Probable Sunlight Hours and No Sky Line calculations for affected neighbouring windows, with results and interpretation against BR 209 (2022) thresholds for each window assessed.
True North & OS-Accurate Geometry
True north confirmed against OS map data. Site boundaries, neighbouring footprints and street alignment verified against your planning drawings — critical in London's tight terraced and mansion-block plots where a few degrees changes the outcome.
Print-Ready PDF + DWG / ArchiCAD Source
A1/A3 print-ready PDF formatted for planning portal upload, plus full DWG and/or ArchiCAD source files. No locked files, no watermarks.
One Free Planning Amendment
If your borough's planning officer requests amended diagrams as a Further Information request, one amendment round is included at no additional charge — updated and re-issued within 48 hours.
The key thresholds London planning officers check against
BRE 209 (Site Layout Planning for Daylight and Sunlight) is the guidance document London boroughs use to assess daylight and sunlight impacts. For full VSC/APSH/NSL calculations with window-by-window interpretation against the applicable BR 209 (2022) criteria, see our Daylight & Sunlight Assessment London service — here's the summary that matters for a standard shadow diagram.
27% VSC or more generally indicates adequate skylight. A reduction to below 0.8 times the former value may be considered noticeable.
Inner-London boroughs frequently apply BRE 209's own guidance on flexibility in dense, historic urban contexts — we confirm your borough's typical approach before modelling.
Main living room windows facing within 90° of south should receive at least 25% of annual probable sunlight hours, including at least 5% in winter (21 September–21 March).
Assessed per window for every affected neighbouring property within the study area.
Divides a room's working plane into areas that can and can't see the sky. If the daylit area falls below 0.8 times its former value, occupants typically notice the change.
BRE 209 §2.3BRE 209 thresholds are guidance, not mandatory standards. London boroughs apply them with varying degrees of contextual flexibility. We confirm the applicable approach with your borough before commencing.
From brief to submission-ready evidence in four steps
Send Your Brief
Share your planning drawings, OS map extract, and the borough name or planning reference. We confirm the required reference dates, time-points and any borough-specific validation requirements before starting.
Borough Brief & Scope Confirmed
We confirm applicable BRE 209 criteria, reference dates and whether full VSC/APSH/NSL is required, in writing. OS grid reference verified against your drawings.
First Draft in 48 Hours
3D model built from your drawings. Shadow footprints generated at all required times. BRE 209 methodology statement prepared. First working draft delivered within 48 hours.
Print-Ready & Submission-Ready
After review and one amendment round, final print-ready PDF, DWG and ArchiCAD source files delivered — formatted for direct upload to the Planning Portal.
Transparent pricing. No surprises.
Every quote is fixed price — not hourly. Invoiced in GBP. No VAT applicable (invoiced from North Macedonia).
Extensions, single dwellings, rear additions and standard applications — shadow diagram for London planning submission.
- Shadow footprints at equinox & solstice
- All required borough time-points
- Existing vs proposed shadows
- BRE 209 methodology statement
- True north & OS-accurate geometry
- Print-ready PDF + DWG source
- 1 free planning amendment · NET 14
Multi-storey schemes and applications affecting neighbouring windows usually need full VSC/APSH/NSL analysis, not just shadow diagrams. See Daylight & Sunlight Assessment London — from £450, with interpretation against the applicable criteria.
All prices in GBP. No VAT — invoiced from KAS STUDIO DOOEL, Skopje, North Macedonia. Fixed quotes within 24 hours of brief received.
All 33 London boroughs, plus the City and LLDC
Regularly instructed across inner and outer London. Not listed here? Get in touch — we work with every London borough.
Common questions about daylight, sunlight and shadow diagrams in London
Also need coverage elsewhere in the UK?
Fixed-price quote within 24 hours.
- £280 householder / single dwelling
- £450+ multi-unit / commercial
- 48-hour first draft
- 1 free planning amendment included
- No VAT · NET 14 payment terms
Prefer to email directly? info@casstudio.com