Upsizing and extend in Style with Bespoke Side Infill Extensions

While the cost of a side infill extension is dependent upon a large number of factors such as the size and style of the extension; the average cost of building a side infill extension in the UK can range from £50K- £75K.

Though it may appear to be a relatively uncomplicated build, side infill extensions require the consideration of numerous factors and practicalities; all of which must align to create your ideal new space.

Therefore, having a team of experts by your side should be viewed as a requirement, not an extravagance. In fact, the ideal team could help you to:

• Design a bespoke extension that suits your unique home. 
• Oversee from planning and design to construction and finishing touches.
• Project management driven solutions tailored to your needs.
• Work closely with you to understand your vision, your budget and your timeline.

Basically, an experienced team can not only help you to optimise the potential of the design and space, and prevent mistakes that could prove costly in the long run; but they can also ensure that the extension meets (and exceeds) your expectations.

At Good Design & Build we believe in turning dreams into reality. With our collaborative working style, our team of experts are with you every step of the way and strive to get the outcome of your desires.

With a team of surveyors, architects, builders, technicians, and project managers; Good Design and Build offers complete project management driven solutions from start to finish. This includes (but is not limited to):

• Primary survey of the location
• The architectural design of the extension
• Coordinating with the local council
• Regular on-site management of the build
• Contractual work

We’ll handle everything, so you can sit back and relax. We understand the home extension journey can be challenging and we do our best to help our clients thoroughly enjoy the process (and the newly-built space) worry-free.

Like all build projects, the eventual cost of a side infill extension is determined by a variety of factors including:

• The size of the extension
• The design of the extension
• Building materials 
• Location
• Groundwork involved
• Fittings and fixtures
• Labour costs
• Specialists’ fees

Good Design and Build offers free consultations and quotations for proposed extensions that allow homeowners to plan, design, and build the ideal extensions within their specified budgets.

Not necessarily.

Side infill extensions that meet the specific criteria and design dimensions of permitted developments will not require planning permission. Some of these criteria include:

• Side extensions must be single-storied and must not exceed more than half the width of the original house.
• Extensions must not be higher than the highest part of the existing roof.
• The materials used on the exterior of the extension must be similar in appearance to the materials used on the exterior of the original house.
• Extensions must not take up more than half the land around the original house.

Extensions that do not comply with the specifications of permitted developments, as well as those built on properties listed in conservation areas, will require planning permission.

Approval for planning permission takes up to eight weeks and requires the submission of a comprehensive application which should include detailed structural diagrams of the proposed extension. 

In addition, building regulations approval and party wall agreements must also be considered, to ensure that every aspect of the side infill extension build complies with building guidelines and standards.

We oversee this entire process for our clients. From the initial survey of the location and the submission of the requisite applications to coordinating with the local authorities and securing the necessary approvals.

With an all-round team of experts, Good Design and Build do it all.

Our services include everything from the initial survey of the location and designing the extension in comprehensive detail, to post-build contractual work and coordinating with the local building authorities.

This allows homeowners to create the ideal space for their home without any stress of the project. With Good Design and Build you can create the ultimate house extension that adds space, comfort, and value to your home.