The vast majority of buildings we install are exempt from planning under Class 3 of the General Exempted Development provisions of the planning regulations. 25 square metres (270 Sq ft) or under built to the side or rear of your house generally qualify for an exemption from planning permission once an area of 25 square metres remains in your garden and the building is used to enhance the family lifestyle.

For any build where it is going to be used for living purposes, it will require planning, and this is up to the homeowner to organise.

Ultimately it is the sole responsibility of the homeowner to be aware of the planning exemption and we would recommend that you familiarise yourself with the exemption rules or contact your local planning authority.

Barna Buildings do offer a full base laying service, however should you decide to lay your own base, it is essential you obtain exact dimensions and base specifications from Barna Buildings.

The windows and doors we use are double-glazed uPVC. We have chosen the material uPVC as the best balance between cost and performance. uPVC windows provide a high degree of performance and warmth. While aluminium windows are structurally good and have a thermal break detail, aluminium remains a highly conductive material and compromises performance.

The Duraboard windows are all customised and manufactured to ordered and you can discuss the size requirements for your build. Our windows are A+ rated double glazed.

The concrete buildings come with a choice of 2 window sizes 1000mm x 900mm and 500mm x 900m. These windows come in white as standard.

Our roofing system utilizes high-performance box profile steel sheets integrated with an anti-condensation barrier. To ensure maximum building longevity, we incorporate a ventilated air gap followed by a secondary breathable membrane underlay. This dual-layer approach optimizes thermal performance and provides superior protection against interstitial condensation.

No, all our Garden Rooms are built as standalone buildings and are constructed separately to the house. You cannot attach any of our Garden Rooms to an existing building.