EXTENSIONS

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Home Extensions: Everything You Need to Know

A home extension is an excellent way to create additional living space, improve the layout of your property and adapt your home to your changing needs without having to move. Whether you are looking to create a larger kitchen, an open-plan living area, additional bedrooms or more space for a growing family, a well-planned extension can transform the way you use your home.

At ALOK Construction, we provide professional home extension and building services, helping homeowners explore practical ways to improve their properties. With our knowlage in extensions, renovations and general building work, we understand the importance of choosing the right design, planning your budget and ensuring the construction is suitable for your property before you start.

This guide explains the different types of home extensions, what to consider before starting, how the building process works and how to plan your project.

1. What are the different types of house extensions?

There are several types of extensions, each offering different advantages depending on the size, layout and location of your property.

Single-storey rear extensions

A rear extension expands the property into the rear garden, creating additional ground-floor space. This is the most popular choice for homeowners wanting a larger kitchen, dining area, family room or open-plan living space.

Rear extensions can incorporate large windows, rooflights and sliding doors to bring in natural light and create a connection between the home and garden.

Double-storey extensions

A double-storey extension adds space across two floors and can creat a larger kitchen or living area downstairs and additional bedrooms or bathrooms upstairs.

This can be particularly useful for families who need more living space. Structural design, foundations, neighbouring properties and planning requirements need to be considered carefully. This is one of the more complex construction works you can do to your house

Side-return extensions

Side-return extensions make use of the narrow space alongside a property, particularly common in terraced and semi-detached houses.

They can help create wider kitchens and make previously underused areas more practical.

Wrap-around extensions

A wrap-around extension combines a rear extension with a side-return extension, creating a larger L-shaped addition to your home.

This significantly changes the ground-floor layout, allowing for spacious kitchens, dining areas and open-plan family rooms or even ground floor bathroom and guest rooms.

Conservatories

Conservatories create additional space with a strong emphasis on natural light. Depending on the design, they can be used as dining rooms, garden rooms, sitting rooms or additional family space.

The suitability of the design and simplicity means that conservatories are much cheaper to build compared to the standard rear extension designs.

Loft and other upper-floor extensions

Depending on the property, additional space may also be created through dormer extensions, hip-to-gable alterations or other loft conversion designs.

Explore our dedicated Loft Conversions service for more information.

2. How do you choose the right extension for your property?

Before deciding on a design, consider the following:

Available space: Assess the size of your garden, side access, existing rooms and property boundaries.
Purpose: Decide whether you need a larger kitchen, an extra bedroom, a home office or additional family living space.
Natural light: Consider rooflights, windows, glazed doors and how the extension will affect existing rooms.
Structure: Existing foundations, walls, drainage and the property's construction can influence what is more practical.
Planning and regulations: Check whether planning permission, building regulations approval or other permissions are required for your particular build.
Budget: Consider the complete project, including design fees, structural work, materials, fixtures, finishes and contingency.

A site assessment and professional advice can help establish which options are suitable before committing to a design.

3. How is a house extension built?

Although every project is different, most traditional house extensions should try to follow a sequence of construction stages.

Step 1: Initial assessment and planning

Step 2: Groundworks and foundations

Step 3: Structural construction

Step 4: Roofing, windows and external doors

Step 5: Plumbing, electrics and insulation

Step 6: Internal finishes

4. Do you need planning permission for a house extension?

Some home extensions may be possible under permitted development rights, meaning a full planning application may not be required. However, permitted development has specific limits and conditions you need to follow before any construction takes place .

requirments can relate to the extension's height, depth, position, overall size, proximity to boundaries and the type of property.

Planning permission may be required where the proposal exceeds permitted development limits, involves certain protected properties or falls within other restrictions.

Before starting any building work, check with your local planning authority and obtain professional advice where necessary.

5. How much does a house extension cost?

The cost of an extension varies depending on its size, complexity, location, materials and specification u want to have.

A straightforward extension with standard finishes will have different costs from a large bespoke extension involving extensive structural alterations, premium glazing, a new kitchen or high-end finishes.

The main factors affecting the cost include:

Cost factor

Size and design, larger and more complex designs require more materials and labour.

Foundations

Ground conditions, drainage and structural requirements affect groundworks.

Structural alterations

Steel beams, load-bearing wall alterations and structural connections add work.

Windows and roofing

Rooflights, large glazed doors and specialist roofing affect specification and cost.

Kitchens and bathrooms

Cabinets, worktops, sanitaryware and plumbing can form a significant part of the budget.

Internal finishes

Flooring, tiling, plastering, decorating and bespoke finishes affect the final price.

It is important to establish what is included in a quotation, including labour, materials, waste removal, professional fees, VAT where applicable and any exclusions.

We recommend allowing a contingency for unforeseen work, particularly when extending or altering an older property.

Visit our Cost & Budgeting guide for more information about preparing a building budget and comparing quotations.

6. How long does a house extension take to build?

The construction time depends on the size of the extension, the complexity of the design, ground conditions, material availability and the amount of structural work involved.

A relatively straightforward single-storey extension will generally take less time than a large double-storey or wrap-around extension involving extensive alterations to the existing house.

The overall project timeline should also allow for design, surveys, planning permission where required, building regulations approval, procurement and inspections throughout the build.

Weather conditions, unforeseen structural issues and changes to the specification can also affect the programme.

A realistic schedule should be agreed before work begins and updated as the project progresses.

Planning an Extension? Speak to ALOK Construction

Whether you are considering a small rear extension, a double-storey addition or a complete transformation of your ground-floor layout, ALOK Construction can help you explore practical building solutions for your property with us today.

We work with homeowners, landlords and property investors to deliver extension and renovation projects tailored to their requirements, design preferences and budgets.

Contact ALOK Construction today to discuss your extension ideas and arrange a quotation.

info@alokbuildgroup.com