Extension Work Of House Rules to Know

Extension Work Of House Rules to Know

You want to enlarge your house to gain additional square meters and make it more spacious? Need an extra room, enlarge the living room? Take advantage of the advice of our habitat experts and the partner architects who accompany you.


The architects offer you solid bases to imagine your extension and how to enlarge your living space. Discover how architects manage to enlarge, sublimate a property through a wood extension, modern or fully consistent with the original habitat. With these basics, you can inspire yourself or even modify the plans to match your project.

Whether it is a house made of stone, brick or wood; modern, single story or traditional, the construction of a home extension will avoid you to move or invest in a new property and allow you to expand living rooms. For that, our experts are there to carry out all the studies necessary to the works of extension of your house as well as the steps to undertake.


The extension of the house allows to enlarge its interior and to gain or restructure its space without moving. Before embarking on a home enlargement, it is important to know the few essential rules.For a cost-effective home construction, you can hire services of this company  https://www.buildersinstevenage.co.uk/.

Learn about the planning rules that will apply to your project

The first step required for a successful home extension project is to learn about the Local Urban Plan (PLU). Not all municipalities have the same rules. It is therefore essential to go to the urban planning department of the town hall of his municipality to learn the rules in force. These last vary according to each city hall.

Take into account the thermal regulations

It is very important to know that the current thermal regulation RT2012 has legal and restrictive consequences on house extension construction. Thus RT 2012 imposes not to exceed 30% of the surface of the house to create its extension.

However, if the extension of the house exceeds 30% of the size of the house or the 150 m2, the additional cost can be very high because the RT 2012 imposes on the constructions of extension an energy study and a balance after work, solutions insulation, and much more expensive equipment, etc.

To avoid having to engage a thermal balance, and to have to install more expensive equipment, it is better to envisage an extension inferior to 30m ².

The house extension allows gaining in natural brightness

The realization of an extension of a house should allow to gain space, but also of the light and to separate the various corners to live harmoniously (living room, dining room, and kitchen).

When planning and extending your home, take advantage of it to get as much light into the house as possible.

The enlargement of the house must naturally allow a bath of light to enter the part of the extension. But it must also not darken the existing part of the house.

Creating a home extension with bay windows can gain maximum brightness. However, if the extension reduces the natural light in the old rooms, other solutions exist, creating, for example, a narrow canopy in the ceiling. This crack of light, which runs along the old part, thus lets in the light of the sky.

In addition, if the brightness brought by the windows is limited by the proximity of neighboring houses, the solution is to find lights in roofs (windows, roof windows). It is also possible to think of tinted windows when there is a vis-à-vis too close

In any case, in your house extension work, you have to know how to adapt to the existing style, both in front and inside, and to bring to your home extension an architectural subtlety and harmony. Decorative. It’s all about budget and tastes.


To achieve an extension, to ensure the success and sustainability of the property, call a professional. It’s up to you to define your project in the most precise way possible, then submit it to an architect who will listen to you and advise you.

First, for those who plan to create more space, that is to say, an extension that exceeds 30% of the size of the house or the 150 m2, the advice of an architect and balance sheet specialist’s thermal buildings will guide you. Once this detail is taken into account, the imagination and structure of the house will help you design the ideal project for your extension.

Then, designing the ideal home extension project by builders in Stevenage can be more complex. In some cases you just have to enlarge a room, in other cases, it will be to create an extra room.

The best rule in all cases is to rely on the existing topography and seek the advice of a professional, so an architect. He will give you the keys to adapt your home extension project to the existing one and make it practical and functional.