House extension specialists

Professional home extension drawings, from design to planning to building regulations, all from just £1,195.
Quick. Affordable. Convenient.

Home extension plans

About our service

A home extension is a great way to create more living space and add value to your home.

But, getting the architectural drawings and structural calculations you need to start construction or secure planning consent can be a frustrating and time-consuming process.

At Online Plans, we provide an architectural drawing service to homeowners and builders throughout England, specialising in drawings for house extensions. Our easy-to-use online service provides a quick and affordable way to get the drawings you need, so you can stop waiting and start building.

Quick & seamless

Why choose Online Plans?

All in one

We offer a wide range of architectural services to cover all your needs.

Save time

We take care of every aspect of your project to speed up the process.

Hassle free

We sort all the paperwork to give your application the best chance of success.

Project management

A dedicated project manager will ensure the experience is seamless.

Cost effective

Fair & transparent pricing so you know what you’re paying up-front.

Quick & convenient

Our process

Our online service is a quick and cost-effective way for homeowners and builders to obtain professional drawings for house extensions.

To start, choose your drawing package, required addons and buy securely online. We’ll send you a comprehensive guide of the information you need to provide.

Next, we’ll validate the information and produce your drawings, ready for your review. Once approved, we’ll submit the application to your local authority, and act as your agent to oversee the process.

Finally, you’ll receive your drawings and a comprehensive building control package, so your chosen contractor can start work.

What's included

We create accurate architectural drawings for home extensions, planning applications and building regulations. You get a comprehensive set of drawings and building specifications that comply with current planning regulations.

"Wonderful service from the beginning to the end. Great advice, and detail about the Plan and guided us through the building reg and structural calculation. Lee was professional all through and his communication was great”

“From the moment Lee contacted us, we felt assured, informed and confident that our project was safe in his hands! He drew the detailed plans and made clear the best use of space and cost. We felt like nothing was too much trouble for Lee and the team, answering questions we had and talking us through the process clearly and putting our minds at ease.”

“Absolutely fantastic. Couldn't be more happy, it's rare you are left feeling like you got full value for money. Lee took care of the whole process. Importantly they produced amazing plans. Were very informative, and took away a lot of the confusion I found when embarking of my project. Offered so much advice outside of the architectural services.”