House Extension Builders in Leicester

Armison manages house extensions across Leicester and Leicestershire from drawings and detailed quotation through structural work, shell construction, first fix, plastering and finishing. We coordinate the agreed stages so clients have one clear route from the initial proposal to the completed space.
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Types of House Extension

We undertake single-storey rear extensions, kitchen extensions and side extensions where the property and approvals allow. Projects can also combine a new extension with an internal knock-through or remodelling to create a more practical kitchen, dining or family space.

The Extension Process

The route depends on the property and proposal. It commonly covers drawings and design, planning permission or permitted development as applicable, Building Regulations, structural calculations and a detailed quotation. Construction can include groundworks and foundations, brickwork and structure, the roof, windows and doors, first-fix electrics and plumbing, plastering, second fix and completion.

What Our Quotes Cover

Our quotations describe the agreed stages of work rather than relying on a single unexplained figure. The scope can cover structural work, trades, materials and the level of finish discussed during the survey. Staged quotations make it easier to understand what is included and to agree any optional work before construction begins. We do not publish a generic extension price because foundations, access, structure, specification and finish vary between homes.

Structural Alterations and Steel Installation

Extensions often involve opening an existing wall or installing a steel beam to connect the new and original spaces. Structural calculations and Building Control requirements must be established for the individual project. Armison can coordinate this work as part of the agreed extension scope.

Recent Extension Projects

Our gallery contains genuine images of completed Armison work. We only describe a project as local where its location has been verified.
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Areas We Cover

Armison serves Leicester, Wigston, Oadby, Blaby, Market Harborough, Loughborough and surrounding Leicestershire areas.

House Extension FAQs

Will my extension need planning permission?

Some extensions can fall within permitted development rights, while others require planning permission. The answer depends on the property, previous additions, dimensions, designations and the proposed work, so it must be checked for the specific address.

Do extensions need Building Regulations approval?

House extensions normally require Building Regulations approval. This can cover foundations, structure, insulation, ventilation, fire safety, drainage, electrics and other parts of the build.

Can the extension be opened into the existing house?

Often, yes. An internal knock-through may require a structural engineer, steelwork and Building Control approval. We establish the required work through the design and quotation process.

How long does an extension take?

The programme depends on design, approvals, ground conditions, structure, specification and access. We provide an anticipated programme for the agreed project instead of promising one duration for every extension.
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