Chartered extension drawings for planning permission — delivered in days, not months, and revised until your council says yes. Start with a free approval-odds score built from live council data.
Every London borough reads a house extension differently. A rear extension that sails through Croydon can be refused in Camden over a single overlooked policy on outlook, daylight or neighbouring amenity. That is why our extension plans start with your local planning authority, not a generic template: we check your council's approval patterns, its residential design guidance and any Article 4 directions or conservation-area rules that apply to your street before a single line is drawn.
Your drawing pack includes existing and proposed floor plans, elevations and a site location plan — everything your council requires for a householder planning application, prepared by chartered professionals who produce extension drawings for London homes every working day. We design to the exact wording of your borough's policies, so your application lands on the case officer's desk looking like an approval, not an argument.
And because we stand behind the work, revisions are free until you have a decision. If the planners push back, we amend the extension plans and resubmit — you never pay twice to get to yes.
Most single-storey rear extensions in London do not need planning permission — they fall under permitted development, provided they stay within set limits. You will usually need full planning permission for your extension if any of the following apply:
A fixed, transparent process refined over 2,400+ drawing packs — most London extension plans are ready to submit within seven days.
Enter your postcode and project details. We score your approval odds against live decision data from your borough before you spend a penny.
We survey your property — in person or from verified measurements — and produce accurate existing drawings of your home as it stands.
Chartered designers draw your extension to your brief and your council's design guidance: floor plans, elevations, sections and site plans.
We handle the planning application end to end, respond to your case officer, and revise the drawings free until you get a decision.
From Victorian terraces in Walthamstow to 1930s semis in Bromley, we draw extensions that respect what planners look for in your street — and push for every metre you're entitled to.
Whatever you're planning, the same chartered team takes it from survey to submitted application.
The classic London kitchen-diner extension — maximised under permitted development or full planning, with glazing and roof options planners accept.
Reclaim the dead alley beside your terrace. We handle the tricky boundary, daylight and neighbour-amenity rules these designs trigger.
Two floors of extra space — bedrooms above, kitchen below. Carefully composed elevations that overcome the stricter scrutiny two storeys attract.
Light-filled rear additions with bifolds, rooflights and level thresholds — drawn so building control sign-off follows smoothly.
Front-of-house additions where design sensitivity matters most. We match materials and proportions so planners have nothing to object to.
Once planning is granted, we produce the building regulation drawings and coordinate structural calculations so your builder can price and start.
Tell us about your project and get a fixed, no-obligation quote back within one working day. If you don't need planning permission at all, we'll tell you that too — for free.
Every home and borough is different, so we price each project individually and guarantee a fixed, no-obligation quote within one working day — with free revisions until your council approves. Request a quote and we'll also tell you if your extension doesn't need planning permission at all.
Most house extension plans are delivered within 7 days of the survey. A full householder planning application then typically takes the council 8 weeks to determine. We prepare and submit everything, so the only waiting you do is on the council's clock, not ours.
A London householder application needs existing and proposed floor plans, existing and proposed elevations, a site location plan at 1:1250, and a block plan. Some boroughs also ask for sections or a design statement. Every pack we produce includes all required drawings for your specific council.
Yes — we prepare extension plans across all 33 London boroughs and the Home Counties, including Surrey, Kent, Essex and Hertfordshire. Because we track live approval data for each local planning authority, our drawings are tuned to how your council actually decides.
We revise the drawings and resubmit free of charge. Most refusals are resolved with targeted amendments — reducing a projection, adjusting a window, changing materials. Our 96% approval rate reflects designs prepared for approval the first time, but if the planners push back, we keep working until you have a decision.
Yes. Our planning application service covers the entire submission: preparing forms, calculating fees, uploading drawings to the Planning Portal, liaising with your case officer, and responding to any queries — so you never have to deal with the council directly.
No — you need accurate, policy-compliant drawings, which chartered architectural designers and technicians produce at a fraction of traditional architect fees. Councils do not require drawings to come from a registered architect; they require them to be correct, to scale and compliant with local policy.
Local drawings tuned to each council's design guidance, with live borough approval rates. Pick your area:
House extension plans in Ealing — single and double-storey drawings submitted for you and revised free until your council approves.
View Ealing →House extension plans in Wandsworth — single and double-storey drawings submitted for you and revised free until your council approves.
View Wandsworth →House extension plans in Bromley — single and double-storey drawings submitted for you and revised free until your council approves.
View Bromley →House extension plans in Barnet — single and double-storey drawings submitted for you and revised free until your council approves.
View Barnet →House extension plans in Harrow — single and double-storey drawings submitted for you and revised free until your council approves.
View Harrow →House extension plans in Sutton — single and double-storey drawings submitted for you and revised free until your council approves.
View Sutton →House extension plans in Richmond upon Thames — single and double-storey drawings submitted for you and revised free until your council approves.
View Richmond upon Thames →House extension plans in Kingston upon Thames — single and double-storey drawings submitted for you and revised free until your council approves.
View Kingston upon Thames →House extension plans in Camden — single and double-storey drawings submitted for you and revised free until your council approves.
View Camden →House extension plans in Islington — single and double-storey drawings submitted for you and revised free until your council approves.
View Islington →House extension plans in Haringey — single and double-storey drawings submitted for you and revised free until your council approves.
View Haringey →House extension plans in Enfield — single and double-storey drawings submitted for you and revised free until your council approves.
View Enfield →House extension plans in Waltham Forest — single and double-storey drawings submitted for you and revised free until your council approves.
View Waltham Forest →House extension plans in Hillingdon — single and double-storey drawings submitted for you and revised free until your council approves.
View Hillingdon →House extension plans in Hounslow — single and double-storey drawings submitted for you and revised free until your council approves.
View Hounslow →House extension plans in Hammersmith and Fulham — single and double-storey drawings submitted for you and revised free until your council approves.
View Hammersmith and Fulham →House extension plans in Kensington and Chelsea — single and double-storey drawings submitted for you and revised free until your council approves.
View Kensington and Chelsea →House extension plans in Westminster — single and double-storey drawings submitted for you and revised free until your council approves.
View Westminster →House extension plans in Merton — single and double-storey drawings submitted for you and revised free until your council approves.
View Merton →House extension plans in Lambeth — single and double-storey drawings submitted for you and revised free until your council approves.
View Lambeth →House extension plans in Croydon — single and double-storey drawings submitted for you and revised free until your council approves.
View Croydon →House extension plans in Hackney — single and double-storey drawings submitted for you and revised free until your council approves.
View Hackney →House extension plans in Newham — single and double-storey drawings submitted for you and revised free until your council approves.
View Newham →House extension plans in Redbridge — single and double-storey drawings submitted for you and revised free until your council approves.
View Redbridge →House extension plans in Barking and Dagenham — single and double-storey drawings submitted for you and revised free until your council approves.
View Barking and Dagenham →House extension plans in Havering — single and double-storey drawings submitted for you and revised free until your council approves.
View Havering →House extension plans in Greenwich — single and double-storey drawings submitted for you and revised free until your council approves.
View Greenwich →House extension plans in Lewisham — single and double-storey drawings submitted for you and revised free until your council approves.
View Lewisham →House extension plans in Bexley — single and double-storey drawings submitted for you and revised free until your council approves.
View Bexley →House extension plans in Southwark — single and double-storey drawings submitted for you and revised free until your council approves.
View Southwark →Answer five quick questions and get a free planning score for your exact address — instantly. Then, if you want the full picture, unlock the detailed analysis: your council's live approval rates, local precedents, constraints on your street and a step-by-step route to permission.