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Single Storey Extension

Single Storey Rear extensions are a great way to add living space to the back of your home if you have the garden to spare. Kitchen extensions can enhance or create fantastic open, social and light spaces. Single Storey Side extensions can add great space especially if you have an un wanted drive or you are the end of terrace. Our single storey extension plans will lead to building eye catching feature rooms or more space for practical and essential needs. Single storey house extensions can create beautiful open plan kitchens with large bi fold doors letting the garden and light in. A small single storey house extension can enhance the rooms you already have and work well with internal alterations. Toilet and utility spaces can allow better comfort and get the noisy washing machine out the living areas.

single storey extension pudsey
single storey extension pudsey
single storey extension pudsey

Design Considerations for a Single Storey Extension

Our Leeds and west Yorkshire based architectural design professionals will talk to you in depth about how to get the best design for your single storey extension. Extension plans need to come from a thorough design process, we need to consider what the site and budget will allow then consider gaining planning permission and building control. The most important thing is how you want to live in and use the spaces, so they compliment and enhance existing spaces. Sometimes a small single storey extension can make better the existing kitchen without taking up too much garden. However a larger single storey garden room extension would be the best option is you have the land and a good outlook. Potential issues on site should be established such as shared boundaries, party walls, sewers, or is it a listed building or in a conservation area? We offer a free consultation click here to book a specialist extension architectural designer for single storey house extensions.

Design Options For Extension Plans

Once the size and layout of the rear or side single storey extension has been determined around the practical requirements such as access, integration, impact on existing spaces, you don’t want to end up with dark unusable or impractical spaces or corridor effect. With the size and layout we will then explore single storey extension roof options, tiled mono pitch, dual or ridged, hipped or flat roofs. Then we add the finishing touches with you discussing and displaying options around glazing and the important wow factors. We keep up to date with trends and new material finishes, plus cheaper alternatives that have similar effects.

Find our gallery to see some of our built single storey extension projects in Leeds, Bradford, Huddersfield, Halifax, Castleford, Pontefract, Wakefield, Horsforth, Dewsbury, Tadcaster,  and West Yorkshire.

Planning permission for single storey extensions

Most Single Storey rear extensions can be built under permitted development, see guide below. Side extensions can be permitted development also but there are more rules to consider. We shall give you the necessary advice and where necessary make permitted development enquiries. Here at CK Architectural Leeds and west Yorkshire we know exactly what is legally required to be in place before you begin building your extension. Our clear planning application extension plans present your design in the correct scales, site maps, etc to validate the application. We will check the design against the planning guidance such as over development, impact on street scene, right of light, over shadowing, loss of amenity and outlook, massing/dominance, loss of privacy, and other factors that could effect the project.

Modern Kitchen Extension in Leeds West Yorkshire
Single Storey Kitchen Extension in Headingley
Average cost of rear single storey extension

Permitted Development for Single Storey Extensions

An extension (Single storey rear extension or single storey side extension) or addition to your house is considered to be permitted development, not requiring an application for planning permission, subject to the following limits and conditions:

No more than half the area of land around the “original house”* would be covered by additions or other buildings

No extension forward of the principal elevation or side elevation fronting a highway.

No extension to be higher than the highest part of the roof.

Single Storey rear extension must not extend beyond the rear wall of the original house* by more than three metres if an attached house or by four metres if a detached house.

In addition, outside Article 2(3) designated land* and Sites of Special Scientific Interest the limit is increased to 6m if an attached house and 8m if a detached house until 30 May 2019.

These increased limits (between 3m and 6m and between 4m and 8m respectively) are subject to the prior notification of the proposal to the Local Planning Authority and the implementation of a neighbour consultation scheme.

If objections are received, the proposal might not be allowed.

Maximum height of a Single Storey rear extension of four metres.

Extensions of more than one Storey must not extend beyond the rear wall of the original house* by more than three metres.

Maximum eaves height of an extension within two metres of the boundary of three metres.

Maximum eaves and ridge height of extension no higher than existing house.

Single Storey Side extensions to have a with maximum height of four metres and width no more than half that of the original house.

Materials to be similar in appearance to the existing house.

Roof pitch of extensions higher than one Storey to match existing house.

Materials to be similar in appearance to the existing house.

No verandas, balconies or raised platforms.

Upper-floor, side-facing windows to be obscure-glazed; any opening to be 1.7m above the floor.

On designated land* no permitted development for rear extensions of more than one Storey.

On designated land no cladding of the exterior.

On designated land no side extensions.

Visit the uk planning portal for more advice or book us to come for a chat.

single storey glass extension headingley
open plan design
Large single storey extension leeds

Building Regulations

Our detailed building regulations plans will include all the necessary detail such as structure, passage of sound, disabled access, drainage, resistance to moisture, collision, impact, heat loss, ventilation, light, emergency escape and much more. Most alterations to your home will require a building certificate from a building control body, either local authority or private building inspector. Once the design and planning has been approved you will then need a detailed set of drawings. These drawing can be used for gaining quotation and will be checked against as the building is inspected. Our specification demonstrates the new extension can and will be built in accordance with the building regulations approved documents. These building regulations drawings will then be submitted for a full plans check, amended if necessary and once approved they will be the standard that is built to and inspection against. drawings will used when the building control officer inspects the build to ensure the builder is carrying out the works correctly.

The average cost of single storey extension is a common question, take a look at our single storey extension cost blog

Building a Single Storey Extension

When choosing your builder, choose someone with lots of specific experience and references in building single storey extensions. Choose someone you’d feel comfortable working with and talking to about concerns. Extension plans for building regulations will not complete the items in the work contract. Ask where they are based, Be clear about your timescale expectations and specific finishes. Quotations should be clear and easy to read with reference to our detailed approved building regulations drawings. Ask who will be doing the work, will they be sub-contracting and who is responsible. Make sure you know when you need to pay check their payment structure and be comfortable with it. Don’t always go with the references they give you, it’s not hard to find out where else they may have been working.

We can offer further help through full project management or individual EXTRA CARE services that can give you better support and clarity when dealing with builders of single storey extensions.

We try to add as much construction details as possible at the building regulations stage, but some assumptions have to be made and certain area investigated before moving forward. Make sure you to remedy them. We offer help throughout for both you and the builder, we will come to site if help is required.

Pitched roof single storey extension in Beeston Leeds, West Yorkshire
Rear single Storey Extension in Leeds West Yorkshire
Single Storey Kitchen Extension in Headingley

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