Planning an extension in London? Before builders quote or designers finalise layouts, you need accurate existing plans. We create survey-led drawings for homeowners, architects, and property investors.
Delivered in PDF + CAD (DWG) formats, ready for design work and planning submissions.
An extension is additional space added to a home—rear extensions, side returns, wrap-arounds, or second storeys. In London, extensions are common because terraces and semis need more space without moving. Local planning rules, neighbour relationships, and tight sites mean accurate drawings matter.
Most projects start with house extension drawings and existing floor plans, then move to extension plans that support design decisions and planning conversations.
London context: Victorian terraces with party walls, conservation areas, permitted development limits, and varied rear access all require accurate baseline measurements before design work can begin.
We don’t build extensions. We provide the measured survey and drawing package your architect, designer, or planning consultant needs.
Based on your brief, we can provide:
Extension drawings
House extension plans
Architectural drawings for extension
Planning drawings extension London
Building regs drawings extension London
London projects move fast, and inaccurate plans create delays, redesigns, and budget creep. We keep the process simple and reliable.
Clear scope, clear pricing, no hidden surprises
Drawings supplied in PDF + CAD for easy next steps
We start from real measurements, not assumptions
Accurate drawings delivered on time, every time
In 6 Easy Steps
We start with receiving your project with brief discussion and understanding requirements.
If you don't have any survey drafts, we have to conduct a site survey and prepare the drawings.
After completing the draft design, we will show it to you for further changes if needed.
If any changes/amendments needed, we will prepare 2-3 changes for free. For the 4th change charges are applicable.
After the changes/amendments, we will then show you the final drafts and submit the invoice for the CAD files and PDFs.
After confirming the final payment. We will then submit you the DWG file as well as the PDFs. We are happy to work with you again soon.
We work across London & Greater London, plus regular commuter-belt areas where extensions are common.
Complete Greater London coverage
Westminster, City, Kensington & Chelsea
Islington, Camden, Barnet, Enfield
Croydon, Bromley, Lewisham, Greenwich
Hackney, Tower Hamlets, Newham, Redbridge
Ealing, Hounslow, Hillingdon, Richmond
Guildford, Woking, Epsom, Reigate
Watford, St Albans, Hemel Hempstead
Chelmsford, Brentwood, Basildon, Harlow
Dartford, Sevenoaks, Maidstone, Tonbridge
Costs depend on property size, access, and scope (existing only vs planning and building regs). A typical terraced house extension costs £500-£850 for existing drawings. Share your postcode, property type, and extension idea—we confirm clear scope and quote with no hidden fees.
Yes, if you want accurate quotes. Builders price confidently when they see measured existing plans, clear dimensions, and a consistent drawing set. Even at early stage, having reliable drawings reduces misunderstandings and prevents the “figure it out on site” approach that causes cost overruns.
They show what you want to build and how it affects the property’s exterior. This is what planning officers and neighbours review. Clear planning drawings help your architect submit clean information and reduce back-and-forth with the council.
Building regulations drawings support technical compliance—structure, insulation, fire safety, and drainage. The exact content varies by project and who prepares the final technical pack, but accurate existing drawings are always the foundation. We confirm scope upfront.
Most projects are delivered within 3-5 working days after the site visit. The typical flow is: brief → survey visit → drawings produced → delivery in PDF and CAD. If you have a planning deadline or contractor start date, tell us early—we can align the timeline.
Yes. An as-built survey captures what was actually constructed—not what was planned. We produce clean drawings in PDF and CAD formats for property records, lease packs, or future renovation planning. Same professional standards as pre-construction surveys.
If you’re in Greater London or nearby counties, yes. We cover North, South, East, West, and Central London boroughs, plus commuter towns in Surrey, Essex, Kent, and Hertfordshire. Share your postcode and we confirm availability and the most suitable drawing package.
Share your address/postcode, property type (terrace/semi/detached/flat), and what you’re planning (rear, side return, wrap-around, etc.). If you have rough sketches or inspiration links, include them. We confirm what drawings are needed so you don’t overbuy.
Get a free, no-obligation quote for your project. We’ll respond within 24 hours.
