HOUSE EXTENSION PLANS
London's House Extension Plans Specialists
Create valuable living space with expert design and planning guidance. Fixed-price package includes all drawings, calculations, and unlimited design revisions.
Or call us on: 0208 154 5569
Why London homeowner's choose us
Expert extension designs delivered efficiently and affordably. We handle all drawings, calculations and planning requirements at one fixed cost.
Survey within 7 days
Your full property survey completed within a week of booking. No delays, no waiting.
Designs in 2 weeks
First draft drawings delivered within 14 days of survey, guaranteed.
Unlimited changes
We revise until you're completely satisfied. No extra charges, no compromise on your design preferences.
Full engineering package
Complete structural calculations and drawings included. Everything your builder needs to start work.
Complete drawing set
Planning permission, building regulations, and construction drawings - all included in one package.
Full planning support
We handle your entire application process. No paperwork hassle, no planning stress.
Fixed-price extension plans package
Complete extension design package with one transparent price. From measured survey to final approval, everything included. Additional costs may apply for listed buildings, conservation areas, or non-standard designs - we'll confirm during consultation.
Detailed property
survey
Planning application management
Full planning or permitted development drawings
Unlimited design
revisions
Complete building
regulation drawings
Fixed price. No hidden
costs. No surprise fees.
Structural engineering calculations
Non-standard projects may incur additional charges
Construction drawings
for your builder
HOW WE DELIVER YOUR EXTENSION PLANS
Your journey from plans to approval
A clear, proven process to transform your extension ideas into approved plans. Here's our approach:
Property survey
Our surveyors visit your home to take detailed measurements and assess conversion potential. Quick, thorough, and scheduled at your convenience.
Initial design
You receive your first design draft within 14 days. We'll walk you through the plans and note any adjustments you want.
Planning submission
Once you're happy with the designs, we submit everything to your local council. We manage the entire process and handle any questions from the planning department.
Technical drawings package
After planning approval, we prepare your final building regulation drawings and structural calculations. Your builder gets everything needed to deliver your project.
HOUSE EXTENSION DESIGNS AND STYLES
Choose your extension design
Transform your London home with the right extension type. Here's how each option maximises your space and adds value.
Rear extensions
Most popular choice for London homes. Perfect for expanding your kitchen, creating open-plan living spaces, or adding extra rooms. Often falls within permitted development rights and maintains your property's street appearance.
Ideal for:
Homes needing larger kitchens, dining spaces, or family rooms.
Side extensions
Converts unused side passages into valuable living space. Creates continuous floor space from front to back, ideal for widening existing rooms or adding utility spaces. Minimal impact on garden area.
Ideal for: Properties with unused side access, narrow rooms needing more width.
Wraparound extensions
Combines the benefits of both rear and side extensions. Creates L-shaped spaces perfect for open-plan living. Maximises natural light and offers flexible room configurations.
Ideal for: Homes needing maximum additional space, particularly for open-plan kitchen-dining areas.
PLANNING AND REGULATIONS
Planning made simple
Extensions fall under three approval routes: permitted development, householder planning, or full planning permission. Getting this right from the start saves time and money. We'll determine the best path for your project and handle all requirements.
Permitted Development
Most extensions qualify under permitted development rights, allowing you to extend without full planning permission. Strict guidelines apply to dimensions, materials, and property type.
Householder Planning
Required for larger extensions, conservation areas, and when exceeding permitted development limits. Our expertise with London councils ensures smooth applications.
Party Wall Matters
Extensions often affect neighbouring properties. We advise on requirements and can recommend party wall surveyors when needed.
Building Regulations
All extensions require building control approval, covering structural safety, insulation, and utilities. Our drawings ensure full compliance from design stage.
OUR TRACK RECORD
Building trust through results
Delivering successful extension projects across London since 2009. Our 98% planning success rate and thousands of satisfied clients demonstrate our expertise.
15 yrs+
Design Experience
98%+
Planning Success Rate
1,000+
Completed Projects
4.9*
Avg. Client Rating
Frequently asked questions
Everything you need to know about getting your London extension designed and approved.
Ready to get started?
Our experienced team has helped thousands of London homeowners create their ideal extension. Call us on 0208 154 5569 for expert advice or request a callback below.
Expert drawing and planning services that take your project from concept to approval. Fixed prices, fast turnaround, and full support throughout.
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