Home Extensions
for Homeowners
This is where it all began for us, working closely with homeowners and helping them create their ideal home extension. Designing living spaces, kitchen extensions, open-plan layouts, and bedroom extensions.
We have delivered home extensions across the UK, including the East Midlands, Cambridge and London, and have extensive experience working with local authorities to secure successful planning approvals.
Extend &
Add livable spaces
Use our specialist team today to make the most from your property.
We do more than just get planning permission for your home extension, we make the space work for you. Many architects will charge you just for calls, whilst we prioritise communication to make sure we design something just right.
Permitted Development
Want to extend your open and create an open plan living kitchen diner with island and bi folds? Then we can advise how you can extend your home without the need for full planning permission.
Most properties in the UK (unless an article 4 direction is in place or is a listed building) can be extended without the need for planning permission. This will depend on your house type (detached, semi detached or terrace). Download the permitted development guide below to understand how your property can be extended without planning permission.
Clear &
readable plans
We don’t use lots of architectural jargon or mess for your plans they are clear and readable with 3D options too.
Most architects tend to cram on all plans for your extension onto one large A1 page which may work sometimes for planning but they are not always readable. We like to put each plan on separate A3 size pages which means they can scale bigger and fill much more of the page.
Home Extensions – By the Numbers
Home extensions have been our bread and butter since we started. This means we have been asked almost every question about extensions and found solutions for all spaces and property types. We always listen to how you want your space to be created and give you the options to achieve it.
99%
You will almost certainly succeed using our architectural planning drawings as we boast a 99% approval rating from local councils with our planning applications
91%
Almost everyone who chooses us for their design and planning stage will continue with us into the detailed drawings needed for building control and accurate costs for builders to price
83%
Of our clients also choose us to complete the construction work for a full design and build service
“Brilliant communication throughout”
— David FoxAdam and the team provided excellent support, both in guiding the design of the extension and the speed of providing quality drawings. Brilliant communication throughout, helping to explain the process and making adjustments as we went. Great service and would 100% recommend to others.
Our Extensions
Frequently Asked Questions
These are the most common question we get from homeowners when extending their property. If you can’t find your question below feel free to contact us, and we’ll be happy to help.
How long will the extension take from start to finish?
9 months – 1 year. Would be a typical timeframe from concept to competition for your house extension. This is just an average so it may take less time. Below is an average breakdown from once you engage us on your extension plans;
Architectural Planning & Design Drawings (1-2 weeks)
Planning Submission & Permission (8-14 weeks)
Architectural Building Regulation Drawings (2-4 weeks)
Builder Invite to Tender/Cost (2-4 weeks)
Construction (3-6 months).
Do you have your own trusted builders?
Yes. We can provide you with our own design and build quote as a one stop solution. So no need to worry about doing all the leg work. We have got you covered.
Do I need to move out?
It depends on the extent of the works being carried out and the type of property that you have. In most cases, you will not need to move out during the build, but there are certain instances where it may be necessary. If major structural changes are being made or the foundations are being replaced, it may be necessary to move out for safety reasons. If you require significant demolition work to be carried out, this could also mean that you need to vacate the property.
How much will me extension cost to build in 2026?
On average between £50-70,000 for a typical single storey rear extension.
A good estimate for your extension cost is to multiply the square meter area of the proposed extension by £2,500. Therefore, if you have an extension which is 5x4m – 20 square meters your extension would roughly cost £50,000. You should also factor in any potential VAT which would add a further 20% to the costs. This estimate doesn’t include the internal works if you were fitting a new kitchen, say. Depending on your specification, it could be £3,000 per square meter if you are having a high-quality specification and finish.
Can build over or move the drains and manhole cover?
Yes. If the manhole is private and only connected to your property then you can alter the drainage runs and locations. If it is public, you can apply for a domestic build over application to Severn Trent (or Anglian Water/Thames Water if your out of the midlands). This process is similar to that of a planning application. They will charge a small application submission fee and will require details of the proposed manhole. This should be completed as early as possible to ensure the building works can be signed off.
Can I extend up to my boundary?
You can extend to the boundary in most cases. However, you should appoint a party wall surveyor or serve you a 14 day notice. Excavating within 3m of an adjoining owners property you should appoint a party wall surveyour. This is under the Party Wall Act 1996. In most cases, party wall agreements can resolve any disputes. Just speaking and coming to an agreement with your neighbour is always the best solution before any works begin. You can use many sites online where you can create your own Party Wall Notice.
How much do you charge for home extension plans?
Extension plans can cost between £750 – £5,000 (plus VAT) depending on what extension and outcome you need. Specifically, you may only need the plans and drawings for planning permissions rather than detailed drawings for contractors to use. Plans for just the planning permission and design stage will be roughly £1,000 (plus VAT).
Is it better to use private or the councils building control?
We recommend you use private building control inspectors because your not always sure if who you will get appointed from the council. As if April 6th 2024, all of the building control officers in the UK where required to be independently checked and verified as RBI.
How long will planning take?
8 weeks. However, we say it can be up to 10-12 weeks due to validation time and sometimes planning officers may ask for an extension of time for the decision date.
