House Extensions in Poole

What Could a House Extension Change About Your Home?

The best extensions don't just create a bigger room — they solve the parts of the existing house that no longer work.

For many Poole homes, that means replacing a small or disconnected kitchen with an open-plan kitchen, dining and family space, creating a better connection to the garden or removing internal walls so the original house flows naturally into the new extension.

Before looking at how far we can extend, we consider how the new space will work with the rooms you already have. That includes the position of structural openings, natural light, access to the garden, kitchen layout and how people will actually move through the finished home.

The aim isn't just more floor space. It's a better home.

Types of House Extensions We Build in Poole

The right extension depends on your property, available outside space and what you want to change inside the house. We build everything from straightforward rear extensions to larger projects involving significant structural alterations and ground-floor reconfiguration.

Rear Extensions

One of the most effective ways to create a larger kitchen, dining or family space by extending into the rear garden. Removing part of the existing rear wall can also allow the original house and new extension to work as one open space.

See our Rear Extensions in Poole guide for layouts, planning considerations and examples.

Side Return Extensions

Side returns make use of narrow or underused space alongside the house. They can be particularly effective when combined with internal alterations to widen an existing kitchen and bring more natural light into the centre of the property.

Wrap-Around Extensions

A wrap-around extension combines rear and side space to create a much larger ground-floor footprint. This can work particularly well when the aim is to completely rethink the kitchen, dining and living areas, rather than simply add another room.

See our Wrap-Around Extensions in Poole guide for more information.

Single-Storey Extensions

Single-storey extensions can be designed around a wide range of uses, from kitchen and family-room extensions to home offices, utility rooms and additional living space.

The priority is making sure the new space works naturally with the existing house.

Two-Storey Extensions

Where the property, available space and planning requirements allow, a two-storey extension can create valuable additional space on both floors — for example, a larger kitchen or living area downstairs with an extra bedroom, bathroom or ensuite above.

Because the new structure affects both levels of the property, careful planning is particularly important. We consider the existing layout, structural requirements, roof design and how the new rooms connect with the original house from the outset.

For homeowners who need significantly more space, a two-storey extension can sometimes provide a more practical long-term solution than extending the ground floor alone.

How Much Does a House Extension Cost in Poole?

As a general guide, a house extension in Poole can cost from around £35,000 for a smaller, straightforward extension to £100,000+ for larger projects involving significant structural work and internal alterations.

Typical starting ranges include:

Small rear extension: £35,000 – £55,000

Medium kitchen / family extension: £55,000 – £85,000

Large open-plan or wrap-around extension: £85,000 – £140,000+

These are guide prices rather than fixed packages. The final cost depends on what we're building and what needs to change within the existing house.

What Affects the Cost?

The biggest factors usually include:

Size and type of extension

Foundations and ground conditions

Structural steels and load-bearing wall removal

Drainage that needs moving or altering

Roofing, glazing and external doors

Kitchen, bathroom and internal specification

Electrical, plumbing and heating alterations

A relatively small extension involving major structural alterations can sometimes cost more per square metre than a larger, simpler build.

Getting an Accurate Price

Before providing a quotation, we prefer to look at the property, understand the proposed layout and identify the main structural and construction requirements.

You'll then receive a clear written quotation based on the actual project, rather than a headline price that bears little resemblance to the finished build.

For a more detailed breakdown of budgets and what your money typically covers, see our House Extension Cost in Poole guide.

Do I Need Planning Permission for a House Extension in Poole?

Not always. Some house extensions can be built under Permitted Development rights, while others will require a planning application.

Whether this applies depends on the property and proposed extension, including its size, position, height and previous alterations to the house. Larger rear, side, wrap-around and two-storey extensions can require different planning considerations.

We recommend establishing the correct route before committing to the build rather than assuming an extension will automatically fall under Permitted Development.

For a more detailed explanation, see our Planning Permission for House Extensions in Poole guide.

What About Building Regulations?

Planning permission and Building Regulations are separate.

A house extension will normally need to comply with Building Regulations, covering areas such as:

• Foundations and structural stability
• Structural steels and openings
• Insulation and energy efficiency
• Drainage
• Fire safety
• Ventilation
• Electrical work
• Glazing and doors

Velaris can coordinate the construction with Building Control inspections at the appropriate stages, making sure the work follows the approved design and structural details.

Will I Need a Party Wall Agreement?

Potentially. If the proposed work affects a shared wall, boundary or involves excavation close to a neighbouring property, the Party Wall etc. Act 1996 may apply.

This is separate from planning permission and Building Regulations, so it should be considered early where an extension is being built close to neighbouring structures or boundaries.

The important part is identifying these requirements before construction starts, so planning, structural design and the build can progress in the right order..

Our House Extension Process in Poole

A well-managed extension depends on getting the design, structural work and build sequence right from the beginning. We manage the construction from the initial site visit through to completion, with one point of contact throughout the project.

1. Initial Site Visit

We start by looking at your existing property, the available space and what you want the extension to achieve.

We'll discuss the proposed layout, how the new space could connect with the existing house and any obvious considerations around access, drainage, boundaries and structural alterations.

2. Plans, Structural Details & Quotation

Once the scope is clear, the relevant drawings and structural information can be established for the build.

We provide a clear written quotation based on the agreed project, so you understand the work involved before construction starts.

3. Groundworks & Foundations

Construction begins with site preparation, excavation and foundations, followed by any required below-ground drainage work.

4. Structure & Making the Extension Weather-Tight

We build the walls and roof structure, install the required structural steels and openings, and fit the external windows and doors.

Where the extension opens into the existing house, this is also when some of the most significant structural alterations can take place.

5. Internal Works & Finishing

Once the main structure is complete, we move into insulation, first-fix electrics and plumbing, plastering, carpentry and the internal finishes included within the project.

Where the extension includes a new kitchen or wider ground-floor renovation, these works can be coordinated as part of the same build.

6. Final Inspection & Handover

We complete the finishing work, carry out our final checks and coordinate the relevant Building Control inspection.

The goal is a finished extension that works naturally with the original house rather than feeling like a separate room added onto it.

How Long Does a House Extension Take?

As a general guide, many house extensions take around 8–14 weeks for the main construction phase, although larger wrap-around or two-storey extensions, extensive structural alterations and higher-specification internal works can take longer.

Before construction begins, we'll discuss the expected programme for your particular project rather than giving you a one-size-fits-all completion date.

Why Choose Velaris Property for Your House Extension?

20+ Years of Building Experience

Velaris Property brings more than 20 years of practical construction experience to residential building projects, including the challenges involved when new structures need to work with existing homes.

One Team Managing the Build

We manage the project from groundworks and structural construction through to the internal finish, giving you one point of contact throughout the build.

We Consider the Whole House

Sometimes the biggest improvement comes from changing the existing layout. We'll consider internal openings, kitchen layout and how the old and new spaces connect, rather than focusing only on the extra square metres.

Clear Quotations & Communication

You'll receive a written quotation and expected programme before construction begins. If something changes during the build, we'll discuss the options and costs before additional work proceeds.

One experienced building team. One managed project. From the existing house to the finished extension.

House Extensions Across Poole & Surrounding BH Areas

We build house extensions throughout Poole, Parkstone, Lower Parkstone, Oakdale, Hamworthy, Canford Heath, Broadstone, Creekmoor, Upton and Lilliput, as well as surrounding BH postcode areas.

Properties across Poole vary considerably, from older terraces and 1930s semi-detached homes to bungalows, larger detached properties and modern developments. Each brings different considerations when planning an extension.

The existing structure, available garden or side space, access, drainage and neighbouring boundaries can all influence what can be built and how the project should be approached.

Whether you're considering a modest rear extension or a larger wrap-around or two-storey build, we assess the property individually rather than taking a one-size-fits-all approach.

Not sure what type of extension would work with your home? Get in touch and we can arrange an initial site visit to discuss the options.

Frequently Asked Questions About House Extensions in Poole

How Much Does a House Extension Cost in Poole?

As a general guide, extensions can range from around £35,000 for smaller, straightforward projects to £100,000+ for larger extensions involving significant structural work and internal alterations.

Size, foundations, structural steels, drainage, glazing and the internal specification all affect the final price. See our [House Extension Cost in Poole] guide for a more detailed breakdown.

Do I Need Planning Permission for a House Extension in Poole?

Not always. Some extensions can be completed under Permitted Development rights, while others require planning permission.

This depends on the property, size and position of the extension, its height and previous alterations to the house. Our [Planning Permission for House Extensions in Poole] guide explains this in more detail.

How Long Does a House Extension Take?

Many house extensions take approximately 8–14 weeks for the main construction phase, although larger wrap-around or two-storey extensions and projects involving extensive internal alterations can take longer.

We'll discuss a realistic programme for your particular project before construction begins.

Can I Stay in My House While the Extension Is Being Built?

In many cases, yes. However, there will inevitably be disruption, particularly when the new extension is opened into the existing house or work affects the kitchen, heating, electrics or plumbing.

We plan the sequence of work to keep disruption manageable where practical and will discuss any stages that are likely to significantly affect how you use the house.

Can You Remove Walls to Create an Open-Plan Kitchen and Extension?

Yes. Many extension projects involve removing or altering existing load-bearing walls so the original house and new extension can become one larger kitchen, dining or family space.

Where structural support is required, the work is carried out in accordance with the relevant structural design and Building Regulations.

Can You Build the Extension and Complete the Internal Work?

Yes. Velaris can take the project beyond the basic shell and manage the structural work, roofing, electrics, plumbing, plastering, carpentry and internal finishing included within the agreed project.

This means you don't have to find separate contractors to turn the new structure into a finished part of your home.

Thinking About Extending Your Home?

You don't need to have every detail worked out before speaking to a builder.

We can visit your property, look at the existing layout and available space, and discuss what you want to change about your home and what may realistically be achievable.

Whether you're considering a rear kitchen extension, side return, wrap-around or two-storey extension, the first step is understanding the property, your priorities and the type of build that makes sense for your budget.

Talk to Velaris Property about your extension and arrange an initial site visit.
📧 info@velarisproperty.co.uk
📞 07831 553313