FAQ - SELF BUILD & EXTENSION
The Answers You Need
WHO DO PEOPLE SELF BUILD?
You pay build cost only so you save 20-30% on the market value which is taken by developers and sale agents normally.
By maximizing the space and layout, you can build something bigger than and more rooms than you could buy for the same money.
You can increase the profit on your investment.
WHAT SHOULD I NEED TO KNOW BEFORE BUILDING AN EXTENSION?
soil conditions on the site
services (Electric, water & gas)
any history of flooding
HOW MUCH WILL BUILDING AN EXTENSION COST?
The cost of an extension will all come down to a number of factors, including quality of material, size, specification and location. For initially budgeting, you may consider £1,200/m2 up.
WHAT ARE THE DIFFERENT BETWEEN PLANNING PERMISSION AND BUILDINGS REGULATIONS IN ENGLAND?
Planning Permission and Building Regulation are often confused and misunderstood. Both are the responsibility of the Local Authority and basically while Planning Permission is permission to erect/extend a building, Building Regulations define how the new building must be constructed.
In addition to the need for these approvals, the deeds of some properties include covenants which defines what can be erected or requires the owner to get separate approval for changes from previous owners of the land, ground landlords or other bodies. These approvals are not covered in the FAQ.
Planning Permission - Local Authorities are concerned with the visual aspect of any development, and how appropriate is its intended use. Any person can make the planning application even if they do not own the land or have any interest in the land. A notice of the application will be published in the local Press and notices displayed at the property. Neighbours and anybody with an opinion are able to view the plans and make comments which the Local Authority will have to take into account.
The Local Authority will have a written policy which contains guidelines for what sort of buildings may be built in any area and, possibly, also define the building style. Whether an application is approved or refused will depend largely on the local guidelines.
Building Regulations - These define how a new building or alteration is to be built so that the building is structurally safe, protected from risk of fire, energy efficient and has adequate ventilation for its purpose. An application for Building Regulations approval is not advertised and only the person applying and the Local Authority are involved.
Building Regulations approval may be required even if Planning Permission is not. Building Regulations approval is granted by the building control officers of local authorities, they are generally separate from the planning officials. Once approval has been given and work started, the local building Inspector will attend the site at specific stages to inspect the work, and they may change the requirements as the work progresses. The most common change is probably at the foundation stage when the Inspector will see the subsoil before the concrete is poured. If the inspector deems that the planned depth is insufficient, they can demand that the foundations be deepened before the concrete is laid (and you have to pay for the extra concrete).