01 — Rear extensions · Kitchen extensions
Single-storey extension builder for Poole homes
We design and build single-storey extensions, most often at the back of the house. We check whether you need planning permission, draw the plans, get the approvals and do the building work.
- ★ 5.0 on Google (15 reviews)
- Checkatrade 10/10 (20 reviews)
- We reply the same working day.
02 — Extensions
What a single-storey extension involves
A single-storey extension needs drawings, sometimes planning permission, and always Building Regulations approval. Then it needs foundations, drains, walls, a roof, windows and doors. We do all of it.
What this covers
- A check on whether you need planning permission.
- Measured drawings of the house and the extension.
- Building Regulations approval.
- Foundations, drains, walls and roof.
- Windows and doors, and the inside finished to the level we agree with you.
How we do the work
- 1
Stage 1
Check what is possible
We look at the size of the garden, access, drains and whether you need planning permission.
- 2
Stage 2
Drawings and approvals
We draw the extension and apply for planning permission if you need it, and for Building Regulations approval.
- 3
Stage 3
Build
We dig and lay the foundations, build the walls and roof, fit the windows and doors, then finish the inside.
Why homeowners choose us
The people who draw your project are the people who build it. So the drawings are made to be built, not just to get approval, and we price each item on them before you commit.
Free
Free project review
Tell us what you want to do. We call you back the same working day to tell you what your project needs and whether it is worth doing. There is no cost and no obligation.
The price is agreed from the drawings
The build price only changes if you change the design.
One firm and one contract
You don't have to find and manage separate designers, engineers and builders.
You can stop after any step
The drawings are yours to use with any builder.
Can I do this to my house?
Answer three or four quick questions to see what your project is likely to need before you speak to anyone.
What your project is likely to need
Your answer appears here as soon as you have answered the questions.
How a building project works
Every extension, knock-through or loft conversion has four stages. We do all four.
- 01
Drawings
We measure your house and draw it as it is now. Then we draw the new layout.
- 02
Approvals
We apply for planning permission if you need it, and prepare the Building Regulations drawings. Building Control is an independent inspector. They check the work and sign it off.
- 03
Engineering
A structural engineer works out the size of any steel beams and foundations before building starts.
- 04
Building work
We do the building work and finish the rooms.
Some single-storey extensions need planning permission and some don't. They all need Building Regulations approval.
What can go wrong, and how we stop it
What goes wrong
How we stop it
The price goes up once building starts.
We price the building work from our own finished drawings, so the price is agreed before work starts.
The steel beam is the wrong size, or rests on the wrong thing.
A structural engineer sizes the beam and what it rests on before building starts. Building Control checks it on site.
Old chimney breasts, pipes or cables turn up once the wall comes out.
We look at what the wall holds up and what runs through it before the drawings are finished.
A neighbour dispute holds the job up.
We tell you early if the Party Wall Act applies, so notices go out before the work is planned.
You find out too late that you needed planning permission.
We tell you at the free review whether you need planning permission, and we make the application if you do.
04 — What goes into an extension
The parts you won’t see once it’s finished
Foundations
Concrete foundations, dug to the depth Building Control agrees for your ground.
Single-Storey Extension Builder in Poole: photos from our jobs
How it works
There are five steps. You can stop after any of them.
You can stop after any step. The drawings are yours, and you can use them with another builder.
We build in Poole, Bournemouth, Christchurch and about 20 miles around them. For homes further away, our remote layout service works anywhere in the UK, and we can price the work, prepare tender documents and vet local builders.
Step 1
Free project review
Send us a few details or call. We look at what you want to do and tell you what it will need and whether it is worth taking further.
Free
Step 2
Layout Ideas Pack
We draw your home as it is now and up to three ways it could work, then fine-tune your favourite with you on a video call. Done remotely from your Rightmove link, floor plan or sketch, or in person with a measured site survey and a 3D point cloud scan.
Remote or in person
Step 3
Cost estimate
Once you have a layout you like, we estimate what it would cost to build.
Price agreed before you commit
Step 4
Drawings, approvals and engineering
Full drawings, structural calculations, and the planning and Building Regulations applications. The house is measured at this stage if it hasn't been already.
Priced after the estimate
Step 5
The build
Near Poole, we price the building work from the finished drawings, then do the work and finish the rooms. Further away, we price it, prepare the tender documents and vet local builders.
Price agreed from the drawings
What our customers say
- ★ 5.0 on Google (15 reviews)
- Checkatrade 10/10 (20 reviews)
- We reply the same working day.
“…they can do everything from start to finish for you.”
“…carried out layout drawings for a very reasonable amount. Josh also gave us a budget price to carry out the works.”
“I couldn't recommend Josh enough! He has been absolutely fantastic, nothing was too much trouble, he was happy to bounce lots of ideas back and forth until we were happy. He is polite, friendly and professional in every aspect. I would definitely be using his services again in the future when needed.”
“Josh got the plans for our extension completed and submitted very quickly. We had a number of amendments and obstacles to overcome but nothing was too much trouble for him. A very professional and efficient service.”
Is PlanBuild right for your project?
We are a good fit if
- You want an extension, a knock-through, a wall removed or a loft conversion.
- Your home is in or near Poole, Bournemouth or Christchurch.
- You want one firm to do the drawings, the approvals, the engineering and the building work.
- You want to see your options and a rough cost before you pay for full drawings.
We are not the right choice if
- Your home is more than about 20 miles from Poole, Bournemouth or Christchurch. Start with our remote layout service instead: it works anywhere in the UK.
How we help
You want more space or a better layout, but you don't know where to start, what it will cost, or who to trust with it.
We tell you what your project needs
At the free review we tell you whether you need planning permission, Building Regulations approval or a structural engineer, and what that involves.
You see your options before you commit
The Layout Ideas Pack gives you up to three layout options for your house, and the cost estimate tells you what your favourite would cost to build.
You know the cost before work starts
We price the build from our own drawings, so you are not relying on a builder's guess.
You deal with one firm
We do the drawings, the approvals, the engineering and the building work. You don't have to find, manage and chase separate firms.
Often done with this job: Kitchen knock-throughs, Structural wall removal, Floor plans and drawings
Questions about Single-Storey Extension Builder in Poole
Do single-storey extensions in Poole need planning permission?
Some don't, because they are allowed under rules called permitted development. Others need a planning application. We check which applies before we draw the design.
Can you give me a price from a rough idea?
We can give you a rough idea of cost after the survey. An accurate price needs the finished drawings.
Do you finish the inside too?
We can. Some customers have us build the walls, roof, windows and doors and finish the inside themselves. We agree this with you before the price is set.
Tell us what you want to change
Send a few details and we will call you back the same working day to tell you what your project needs. There is no cost and no obligation.
We build in Poole, Bournemouth, Christchurch and about 20 miles around them.
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