House Extensions

Moving home isn’t always the best way to gain more space. In many cases, a professionally designed house extension offers a faster, more cost-effective solution — adding value, light, and functionality while allowing you to stay where you are.

At Get Rapid Plans Ltd, we specialise in house extension planning drawings and building regulations drawings for homeowners, landlords, and property investors across Greater London. Our role is to turn your ideas into clear, council-compliant plans that are ready for approval and construction.

Whether you’re planning an open-plan kitchen, a larger living area, a home office, or additional bedrooms, the success of your extension depends on two things:
the right design and the right permissions.

Looking for More Information on House Extensions?

How Much Does a Single Storey Rear Extension Cost?

Planning-Led House Extension Design

House extensions may fall under Permitted Development or require full planning permission, depending on size, layout, and location. We clearly explain which route applies to your property and whether a Lawful Development Certificate is recommended for long-term peace of mind.

Our planning drawings are prepared to address common council concerns from the outset, helping reduce delays, objections, and refusals. We also manage the planning submission process and liaise with the local authority on your behalf.

Ready to extend your space?
Contact us today to begin your Single Storey Rear Extension project and transform your home with Get Rapid Plans!

Building Regulations Drawings – Built for Construction

Once planning is approved or confirmed, we prepare detailed Building Regulations drawings that builders can rely on. These drawings demonstrate compliance with current UK Building Regulations and are suitable for building control approval.

We work closely with builders during construction, providing clarification, additional details where needed, and ongoing technical support — particularly helpful when working with less-experienced contractors.

Our planning drawings are prepared to address common council concerns from the outset, helping reduce delays, objections, and refusals. We also manage the planning submission process and liaise with the local authority on your behalf.

Share your project details with us, and we’ll provide a free quote! It only takes 60 seconds!

Why Choose Get Rapid Plans Ltd for Your House Extension?

Our approach is simple: design with approval and buildability in mind, so your extension works on paper and on site.

Testimonials

londoner mick

In life you need to be guided when taking on jobs you have no experience in. Well Rapid Plans was that company. A loft conversion and extension was needed. i was told what the council would give and what they wouldnt. they where bang on correct. Good pricing good communication. Would i recommend? i wouldnt go anywhere else.

Chinwe Nwofor

I recently used Get Rapid Plans for my house renovation projects -Dormer loft extension and first floor rear extension . Javad and Nash were highly professional throughout, easy to contact and communicate with. As it was the first time I undertook a renovation work of this nature, I relied alot on Get Rapid Response to guide me through the process even down to recommending reputable builders and Structural Engineers.

Gurpreet Singh

I was referred by my brother to use get rapid plans for my loft conversion. They gave me lots of good advice and helped me get approval on my application quickly and comparatively the quote was very reasonable.Dilnashin checked my property details over the phone and gave me a quote quickly, unlike past experience with others who took a long time and gave an expensive price which was quite a time waster.

Mansoor Malik

Great experience with this company Used them for a loft conversion and another application for side extension with hip to gableCommunication from Dilnashin has been really professional Both application granted without any issuesWill definitely use them again for future projects

Speak to an Expert Before You Start

If you’re considering a house extension and want clear answers, realistic guidance, and professional plans, our team is here to help.

We’ll review your property, explain your options, and guide you through the next steps with clarity.

Looking for More Information on Single Storey Rear Extensions?

How Much Does a Single Storey Rear Extension Cost?

FAQ

Do I need planning permission for a single storey rear extension?

In most cases, single storey rear extensions fall under permitted development, meaning you may not need planning permission if the extension meets specific size and design criteria. However, we will handle all planning permission applications if required, ensuring your project complies with local regulations.

How long does it take to complete a single storey rear extension?

The timeline for a single storey rear extension can vary depending on the size and complexity of the project. Typically, the design and planning process takes a few weeks, followed by 8-12 weeks for construction. We provide a detailed project timeline during the initial consultation.

Will a single storey rear extension increase my property value?

Yes, a well-designed rear extension can significantly increase the market value of your property by providing additional living space and modernizing your home’s layout, making it more appealing to future buyers.