Looking for an architectural designer in London for a house extension, loft conversion or renovation? Draw & Plan specialises in residential architectural design, planning drawings and Building Regulations drawings for homeowners across Greater London.
We provide planning and technical drawing services for house extensions, home extensions and loft conversions—with fixed fees from £950 + VAT.
Services & pricing
Choose the package that matches the stage of your project. All prices are fixed and agreed up front.
+ VAT · measured survey included
+ VAT
+ VAT · measured survey included
Structural design packages from our affiliated structural engineer start at £395 (no VAT) for a simple extension.
Need existing drawings first?
Accurate floor plans, roof plan, elevations and a section, delivered in DWG and PDF.
Our process
Send your address and project details. We check the planning constraints before providing a clear fixed-fee quote.
Your architectural designer visits your property to complete the measured survey and discuss the design with you on site.
We prepare the planning and Building Regulations drawings you need.
We submit the application and manage it through the approval process.
Why choose Draw & Plan
By focusing on residential projects and operating efficiently, we provide the planning and technical drawing services many homeowners need at a significantly lower cost than many traditional architectural practices.
Every drawing set and planning application is personally handled by the director, so you always know who is working on your project.
Choosing the right service
Many house extensions, loft conversions and residential renovations do not require you to appoint an ARB-registered architecture firm. The right choice depends on the project's complexity and the level of service you need. Read our guide to choosing an ARB-registered architecture firm or architectural designer for an extension.
Architectural designer
An experienced residential architectural designer is often suitable when you need a measured survey, design development, planning drawings, Building Regulations drawings and application management for an extension, loft conversion or renovation.
ARB-registered architecture firm
You may prefer an ARB-registered architecture firm for a highly complex new build, sensitive heritage project or a wider appointment that includes detailed design, consultant coordination, tendering and construction-stage contract administration.
Residential design services
Draw & Plan provides coordinated residential design services for house extensions, loft conversions, garage conversions, changes of use and home renovations across every London borough. Start with the service or homeowner guide that matches your project.
Existing and proposed drawings for planning applications and permitted development.
Detailed construction drawings, technical details and written specifications.
Architectural drawings for rear, side and wraparound home extensions.
Planning and technical drawings for dormer, hip-to-gable and rooflight conversions.
A practical guide to planning and Building Regulations for garage conversions.
Guidance on permitted development and planning applications for changes of use.
Understand whether your project needs planning permission, Building Regulations or both.
Learn which drawings are required for Building Regulations approval and what they contain.
Need accurate existing plans first? View our Measured Building Survey service, or explore our Drawing Samples.
Sample projects
Plan sets we prepared and completed builds from the same projects.
Helpful answers
Many house extensions do not require you to appoint an ARB-registered architecture firm. An experienced residential architectural designer can prepare the planning drawings, Building Regulations drawings and application documents needed for a typical domestic extension.
An ARB-registered architecture firm may provide a broad range of design, consultant coordination and construction-stage services. An architectural designer can provide the focused architectural design and drawing services many homeowners need. For a domestic project, the practical question is whether the provider has the right residential experience and can prepare the planning and technical information required.
Yes. Our planning packages include the existing and proposed drawings, site information and supporting documents commonly required for a householder planning application, Lawful Development Certificate or Prior Approval application.
Yes. We prepare, submit and manage householder planning applications, Lawful Development Certificate applications and Prior Approval applications on your behalf.
Yes. We provide residential architectural design, measured surveys, planning drawings and Building Regulations drawings across Greater London and all London boroughs.
The next stage is usually to prepare Building Regulations drawings, obtain any required structural calculations and submit the technical package to Building Control before construction progresses.
Yes. We prepare detailed Building Regulations plans, construction details and written specifications for extensions, loft conversions, garage conversions and internal refurbishments.
Building Regulations drawings typically start from £950 + VAT, while combined planning and Building Regulations packages typically start from £1,650 + VAT. Measured building surveys start from £750 + VAT.
Yes. Our Building Regulations packages include technical plans, construction details and a written specification for your builder. Where applicable, they should be read alongside structural calculations and Building Control instructions.
Planning drawings are typically issued within seven days of the measured survey. Building Regulations drawing times vary with the project’s complexity and the availability of structural or other specialist information.
Ready to begin?
Clear, fixed fees from an established residential drawing practice serving London homeowners since 2014 and rated 4.9 on Google. Tell us about your project through our Contact page.