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Side and Rear Extensions

House Extension Design and Planning | Landmark Group
Completed single storey rear extension with large glazing onto the garden

SIDE AND REAR EXTENSIONS

Built on. Not bolted on.

1997Founded
5×International Property Awards
10+In-House Specialists
5Professional Accreditations

An extension is the usual way to get the house you want out of the house you have. It is also the easiest thing to get wrong, because what makes a room feel generous is rarely its floor area. Ceiling height, where the glazing sits and the line of sight from the existing rooms all do more work than square metres.

We design the extension and the rooms it opens into as one plan. That usually means changing something inside the original house, and it is the reason the finished space reads as part of the home rather than an addition to it.

Side and Rear Extensions

WHAT WE OFFER?

Every service below states what the work covers and what you receive at the end of it.

01

SINGLE AND DOUBLE STOREY REAR EXTENSIONS

The most common extension, and the one most often refused on scale, massing or impact on neighbours.

You receiveScaled existing and proposed drawings, the submitted application and the decision notice.
02

SIDE RETURNS AND WRAP-AROUNDS

The side return is usually dead space doing nothing. Taken properly, it changes the whole ground floor.

You receiveA layout drawn together with the rooms it opens into.
03

PERMITTED DEVELOPMENT AND PRIOR APPROVAL

Many single storey extensions can be built without a full application, within limits on depth and height, and some larger ones through the prior approval route.

You receiveWritten confirmation of what can be built, kept on file for resale.
Explore permitted development
04

STRUCTURE, GLAZING AND BUILDING REGULATIONS

Open-plan ground floors need steel, and large glazing needs both structure and a thermal answer.

You receiveThe steel design, glazing specification and Building Regulations package, issued together.
The process

HOW IT WORKS?

Four stages, one team, no handover between firms.

  1. 01

    APPRAISAL

    Site, policy and the existing house assessed together.

  2. 02

    DESIGN

    The extension and the rooms it opens into drawn as one plan.

  3. 03

    CONSENT

    Application lodged and negotiated, or permitted development confirmed.

  4. 04

    TECHNICAL

    Structure, glazing and the Building Regulations package issued for site.

Why Landmark

WHY CHOOSE US?

The extension is designed with the rooms it opens into, which is what makes it read as part of the house rather than an addition.
Steel, glazing and compliance are resolved alongside the design, not discovered after approval.
One team from the first appraisal through to sign-off.
Accredited byICECIOBCIATIFSMCONTROL4
Keep exploring

RELATED SERVICES

PLAN AN EXTENSION THAT FITS THE HOUSE

Tell us about the house and what is not working, and we can talk through the options and how they open into the rooms you already have.

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