Exp|Arc
Areas we coverGreater London

Extension drawings and planning in London

Council-ready drawings for extensions, loft and garage conversions and planning applications across Greater London. We check your address against the right council first, then draw the full set it expects, at a fixed written price.

  • Planning route confirmed for your exact address on day one
  • Fixed price in writing, unlimited design revisions
  • First draft within 10 working days

Get your free London route check
No obligation · Fast response · 100% refund if any application is refused
Prefer to talk? Call +44 118 207 2681

We use your details only to answer your enquiry. See our privacy policy.

Any application refused? 100% refund within 5 days.We are confident in our work, so we stand behind it. Refund terms.
Your councilLocal planning authorities

Councils we submit to in Greater London

In plain English: London has 33 local planning authorities: the 32 boroughs and the City of London. Your application goes to the borough your home sits in, and each one applies its own local plan and design guidance.

  • Barking and Dagenham
  • Barnet
  • Bexley
  • Brent
  • Bromley
  • Camden
  • City of London
  • Croydon
  • Ealing
  • Enfield
  • Greenwich
  • Hackney
  • Hammersmith and Fulham
  • Haringey
  • Harrow
  • Havering
  • Hillingdon
  • Hounslow
  • Islington
  • Kensington and Chelsea
  • Kingston upon Thames
  • Lambeth
  • Lewisham
  • Merton
  • Newham
  • Redbridge
  • Richmond upon Thames
  • Southwark
  • Sutton
  • Tower Hamlets
  • Waltham Forest
  • Wandsworth
  • Westminster
Local know-howGreater London

What to expect locally

Borough by borough rules

Each borough publishes its own design guidance for extensions, and many have Article 4 directions that remove some permitted development rights, so a rear extension allowed in one street can need full planning in the next. We check your exact address before anything is drawn.

Conservation areas and terraces

Large parts of inner London sit in conservation areas, and Victorian and Edwardian terraces dominate many boroughs. Side return, rear and loft extensions here are judged closely on materials, roof form and the effect on neighbours, which is where a carefully drawn set makes the difference.

Basements and party walls

Several central boroughs have specific policies on basements, and almost every terraced or semi-detached project in London involves party wall notices. We draw with both in mind so your builder and neighbours are not surprised later.

Not sure what applies to your address?

Send your postcode and what you are planning. You get the route, the drawings you need and a fixed price in writing, usually the same working day.

Check my route →See how pricing works
Common questionsLondon

Quick answers

Which council do I apply to in London?

The council for the borough your property is in. London has 32 boroughs plus the City of London, each a separate planning authority. Send us your postcode and we confirm which one and what it expects.

Is my London home in a conservation area?

Many are, particularly in inner boroughs. It changes what you can build without full planning permission. We check the conservation area, any Article 4 direction and listed status as part of your free route check.

Do I need a party wall agreement for my extension?

If you build on or near a shared wall or boundary, the Party Wall Act usually applies. It is separate from planning. We flag it early and our drawings show the party wall details your surveyor will need.

Still not sure where you stand?Send a few details and we will confirm your route and price in writing, with no obligation.Get my drawings quoted
Start nowFree route check

Tell us about your project

Your postcode tells us which council decides your application and whether any local restrictions apply. We reply with your route, the drawings you need and a fixed price.

Your free route check
No obligation · Fast response · 100% refund if any application is refused
Prefer to talk? Call +44 118 207 2681

We use your details only to answer your enquiry. See our privacy policy.

Ready when you are

Get your drawings quoted, fast.

Tell us what you are planning in London. We confirm the right route and the council-ready drawings you need.

What happens next
✓We confirm your council and planning route on day one.
✓Fixed scope and price, no hourly surprises.
✓100% refund if any application we submit is refused.