
House Extensions
Side return, rear, wraparound, double-storey and basement extensions — drawn to maximise footprint within your borough’s tolerances, with daylight and neighbour impact considered before the council does.

Fixed-fee planning permission, planning drawings and architectural drawings for London homes — chartered, delivered in days, priced to beat any comparable quote, and reviewed until your council says yes. Drawings drawn to be approved.
Free 2026 London Planning Report — planning, costs & approval odds for your London home
From first sketch to approved stamp — planning, building regs and structural packages produced in-house by chartered technologists.

Side return, rear, wraparound, double-storey and basement extensions — drawn to maximise footprint within your borough’s tolerances, with daylight and neighbour impact considered before the council does.

Dormer, mansard, hip-to-gable and Velux — we check permitted development eligibility first, free.
Existing and proposed plans, elevations and sections — formatted precisely to your borough’s validation checklist.
Full-plans packages with structural calculations coordinated in-house — one team, no handoffs between architect and engineer.
Lawful development certificates, listed building consent, flat & HMO conversions, change of use, retrospective applications and appeals.
From Camden’s conservation officers to Croydon’s validation checklists — we submit across London every week, so your application lands exactly how your council expects it.
Pick your project, tell us where it is, and an accurate fixed quote lands in your inbox within 60 minutes — with a free planning appraisal of your property’s potential. No obligation, no pressure.
From your 60-second quote to the council's decision — your online portal shows exactly where the project stands, at every hour of every day.
60 seconds online. We check borough constraints and permitted development rights the same day — with a fixed fee that never moves.
Your property measured with laser precision, so every drawing matches reality millimetre for millimetre.
Existing and proposed sets delivered to your portal — each one passed through a council-ready review first.
Filed to your borough and tracked in your portal, with every letter and response stored where you can see it.
Decision managed to the end — we answer every council query, and redraw free until the approval lands.
Tracked Live in Your PortalEvery set is drawn to your borough’s validation checklist and reviewed before it ever reaches a planner’s desk.

Same council result, roughly 30% smaller number.
Highly competitive fixed fees — quoted free, agreed upfront, and defended by four guarantees most London practices won’t put in writing.
Bring us any comparable chartered quote and we’ll beat it. If we can’t, we’ll tell you to take it — honestly.
Survey to full drawing set in seven days — while other practices are still booking your first meeting.
If your council asks for revisions, we redraw at no charge — as many times as it takes to get the decision.
Message your technologist before 3pm, hear back the same working day. No gatekeepers, no voicemail purgatory.
“Our wraparound extension was approved first time in Lambeth. The drawings were immaculate and the portal meant I never once had to chase for an update.”
“They spotted our loft qualified as permitted development — saved us the whole planning process. An architect had already quoted us triple for the same job.”
“Fixed fee meant the price never moved, even when the council asked for revisions. Structural calcs were handled in-house, which made the builder's life easy.”
“Quote on Monday, survey on Thursday, drawings the following Friday. Wandsworth approved without a single amendment. Ridiculously smooth.”
“Two other firms quoted more and wanted twice as long. These drawings sailed through Islington's conservation team first time.”
“Our builder said they were the clearest drawings he'd worked from in twenty years. The council agreed — approved in six weeks.”
Tell us your London address and project. We'll confirm feasibility, whether you even need planning permission, and a fixed fee — within one working day.
Tell us your address and your ambition — we’ll confirm feasibility and a fixed fee within one working day.
Get My Free QuoteOr call us — 020 7864 7245