House Extension Plans
Existing and proposed plans, elevations and sections for rear, side-return, wraparound and two-storey extensions, ready for planning and on to Building Regulations.
⭐ Rated 4.9 on Google · Since 2014 · 1,000+ projects completed
Affordable Architectural Design Services in London
Draw & Plan provides affordable, fixed-fee residential architectural design services for homeowners across London. We prepare house extension plans, loft conversion drawings, planning applications and Building Regulations drawings.
From the initial measured survey through to planning and technical drawings, we offer a practical, cost-effective service tailored to your project. Our complete Survey, Planning and Building Regulations drawing packages start from £1,950 + VAT.
Get a Fixed-Fee Quote
Tell us about your extension, loft conversion or residential alteration and receive a quotation for the drawings and applications you need.
98%
planning approval rate
4.9
Google rating
1,000+
London projects
2014
Year established
What we do
Residential Architectural Design & Drawing Services
We work only on homes: extensions, loft conversions, garage conversions, internal reconfigurations and refurbishments. Choose a single service or a complete package. Find out more about our residential design approach.
Loft Conversion Drawings
Floor, roof and section drawings for dormer, hip-to-gable and rooflight conversions, showing the new stair, headroom and roof alterations.
Planning Drawings & Applications
The existing and proposed drawings and site plans a householder application needs. We prepare, submit and manage the application with the council for you.
Building Regulations Drawings
Technical plans, sections, construction details and a written specification for Building Control and your builder, coordinated with the structural calculations.
Measured Building Surveys
Your designer measures the property on site and produces accurate existing plans, elevations, a roof plan and a section in DWG and PDF.
Not sure which you need?
Send your address and a short description of the work. We'll recommend the right drawings and reply with a fixed-fee quotation, usually within 24 hours.
Fixed-fee packages
See full pricing details Choose the package that fits your project.
Simple fixed-fee packages covering the drawings you need from measured survey through to planning and Building Regulations. Prices are starting fees: your quotation depends on the scope and complexity of the project.
Planning package
Measured Survey Drawings + Planning Drawings
From£1,450+ VAT
Your architectural designer personally visits your property to carry out the measured survey, discuss your ideas and prepare the drawings and planning application.
If suitable existing survey or planning drawings are provided: reduced package price from £950 + VAT.
Structural calculations from £950 + VAT. They are additional to the Draw & Plan drawing/package fees.
Application fees are additional.
Building Regulations package
Measured Survey Drawings + Building Regulations Drawings
From£1,450+ VAT
Your architectural designer personally visits your property to carry out the measured survey, assess the proposed work against the existing building and prepare the drawings and specification for Building Regulations approval.
If suitable existing drawings are provided: reduced package price from £950 + VAT.
Structural calculations from £950 + VAT. They are additional to the Draw & Plan drawing/package fees.
Application fees are additional.
Most popular
Complete drawing package
Measured Survey Drawings + Planning Drawings + Building Regulations Drawings
From£1,950+ VAT
Your architectural designer personally visits your property during the measured survey to discuss your ideas and assess the proposed design, then takes the project through planning and on to Building Regulations.
If suitable existing drawings are provided: reduced package price from £1,450 + VAT.
Structural calculations from £950 + VAT. They are additional to the Draw & Plan drawing/package fees.
Application fees are additional.
Measured survey package
Measured Building Survey Drawings
From£950+ VAT
Your architectural designer personally visits your property to carry out the measured survey, discuss your ideas and prepare accurate existing drawings for your planning, design or Building Regulations work.
Drawings typically issued within 5 working days.
DWG & PDF delivery included.
Not sure what you need?
Send us your property address and a brief description of your proposed works and we'll advise which package is right for your project and provide a fixed-fee quotation.
How it works
From first message to council submission in three steps.
Step 01
Send us your project detailsAddress, scope, what you're planning. We check the planning constraints before replying within 24 hours with a fixed fee.
Step 02
We prepare your drawingsYour architectural designer personally visits your property to carry out the measured survey, discuss your ideas and assess the proposed design in the context of the existing building before preparing the full CAD pack.
Step 03
We submit to the councilPlanning and / or building control — handled end to end so you don't have to chase.
Choosing the right architectural designer
For most home projects, you don’t need an ARB-registered architecture firm.
For house extensions, loft conversions and home alterations, an experienced residential architectural designer can prepare the planning and Building Regulations drawings you need.
Learn about our architectural designer serviceARB-registered architecture firm vs architectural designer
ARB-registered architecture firm
Often provides a wider design service for complex, large-scale or specialist projects, with fees that reflect that broader scope.
Residential architectural designer
Focuses on the planning and technical drawings needed for extensions, loft conversions and other domestic alterations.
Why our fees are lower
We specialise in domestic projects and run a small, focused studio. Every drawing is prepared by the director, without the overheads or junior handoffs of a larger architectural practice.
Why choose us
More than a decade of London residential drawings — done properly.
We're a small practice, which means you deal directly with the architectural designer drafting your project. No junior handoffs, no call-centre queues, no surprises on the invoice.
Fixed, transparent pricing
Quoted up front. No surprise hourly billing.
Fast turnaround
5–7 days typical from survey to issued drawings.
Across all London boroughs
Every borough, every project type since 2014.
Meet your designer at your property
Meet the architectural designer who will prepare your drawings during the measured survey. Discuss your ideas, ask questions and explore the proposed design together on site.
Experienced since 2014
More than a decade and 1000+ residential projects completed.
Trusted
Rated 4.9 on Google. Most of our work comes from referrals.
What clients say
From real clients and collaborators.
Reviews and recommendations from Google and LinkedIn, written by the people we’ve worked with.
Google · Today★★★★★
“Excellent architecture drawings and plans for new build in full details for building control regulations. Reasonable cost and good in keeping contact.”
— R C
Google · 1 day ago★★★★★
“I'd like to extend my sincere thanks to David for his support. He has been consistently professional, responds promptly, and resolves any issues quickly. I'd be happy to recommend David to friends and family.”
— Abdil Curumtally
Google · 3 days ago★★★★★
“Very happy with the plans we received. David listened carefully to what we wanted and turned the brief into clean, buildable drawings the builder was happy to quote from.”
— M A
LinkedIn · July 2026
“I have been using David for all my architectural needs over the years; he is knowledgeable, responsive and good at problem-solving.”
Jacob Botha
Vice President, Salesforce
LinkedIn · July 2026
“Highly recommend David. He provides an efficient and effective service. My plans were approved by the local council earlier than expected.”
Davina Debidin
Head of Communications & Responsible Business, Morrisroe Group
Get your drawings started today
Tell us about your project. We’ll reply within 24 hours.
Fixed fees. No obligation. Most projects quoted within one working day.
8 Hollies Way, London SW12 0QG