BCP Council

Extensions, knock-throughs and wall removal in Christchurch

Clear drawing and build-readiness support for Christchurch homes, including layout changes, extensions and structural checks.

  • ★ 5.0 on Google (15 reviews)
  • Checkatrade 10/10 (20 reviews)
  • We reply the same working day.
A finished house extension, brick exterior

Houses in Christchurch

We work on a mix of house types across Christchurch, from period terraces to modern estates. The free review tells you what your specific property and project need.

Houses in Church Street, Christchurch — residential properties near the historic Priory
Houses in Church Street, Christchurch — residential properties near the historic Priory. Photo: Basher Eyre, Geograph, CC BY-SA 2.0.

Why homeowners choose us

We combine design and construction experience, so the early layout discussion considers how a home could be altered as well as how it could look. Detailed scope, pricing and programme are agreed separately for each project.

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.

Clearer scope before work begins

We use the available drawings and project information to discuss the proposed work before a quote and contract are agreed.

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.

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.

  1. 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

  2. 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

  3. Step 3

    Cost estimate

    Once you have a layout you like, we can explain the further work needed and quote any separately agreed service.

    Quoted separately

  4. 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

  5. Step 5

    The build

    Near Poole, we can prepare a quote and contract using the information available for the agreed scope. Changes, site conditions and client decisions can affect scope, cost or programme. Further away, we can prepare tender information and support the selection of local builders.

    Quoted for the agreed scope

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.”
Sandra W. · Google review · April 2026
“…carried out layout drawings for a very reasonable amount. Josh also gave us a budget price to carry out the works.”
Lee B. · Google review · August 2024
“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.”
Kirsty H. · Google review · January 2024
“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.”
Lester M. · Google review · February 2021

Questions

Why not use a designer and then a builder?

You can. A separate builder will price the information available to them, and you will coordinate the designer, engineer and builder. PlanBuild can provide agreed design and construction services through one point of contact where that suits the project.

What will my project cost?

It depends on the scope, site conditions, structure, materials and finish. We explain the information needed before a construction quote can be prepared for an agreed scope.

Is the review really free?

Yes. Tell us what you want to do and we will tell you what it needs and whether it makes sense. If it is worth taking further, the next step is the Layout Ideas Pack, done remotely or in person.

Do I need planning permission?

Many extensions and most changes inside the house don't need planning permission. Some do, depending on the size, the position and your property. We tell you at the review.

Do I need Building Control for removing a wall?

Yes, if the wall is load-bearing. Building Control is an independent inspector who checks the work and signs it off. We make the application and arrange the structural calculations.

Do I need a party wall agreement?

If the work affects a wall you share with a neighbour, for example a steel beam resting on it, the Party Wall Act usually means you must give them written notice first. We tell you early if this applies.

How long does it take?

It depends on the job, surveys, approvals, design decisions, site conditions and availability. We discuss an indicative programme once the scope is sufficiently defined, but it can change as the project develops.

What if I stop after the layout pack or the drawings?

That is fine. The drawings are yours, and you can use them with another builder.

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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