Home extension: costs to be foreseen and regulations

Are you going to enlarge your house? A guide on prices and regulations in force, for a great home extension.

Who has never dreamt of a bigger house? You can decide to enlarge your home to have it. In this way you can add a new room, or a bright kitchen with glass. Be careful, however, because every extension must be made in accordance with the regulations in force. P

Home extension: what are the costs to be taken into account?

A house extension is a financially demanding operation:

  • Urbanisation costs
  • Contribution to the cost of construction
  • Technical expenses (about 10% of the cost of the works)
  • Costs of carrying out the work

The Home Plan, the regulations governing building recovery and new constructions

The regulations for the extension of the house, has as its center, the House Plan. This regulation was created with the aim of encouraging the recovery of buildings and create new housing units. Even if the plan differs from region to region, the regulated topics always include interventions aimed at improving the energy efficiency of the house and seismic consolidation. The Plan also makes it possible to raise and widen existing buildings, in compliance with all building regulations. In order to get the OK to start the work, it is necessary to open the DIA (declaration of commencement of activities) and obtain the municipal permit.

Are there any limits for extensions?

The Home Plan, as far as the extensions are concerned, is quite clear. These must not exceed 20% of the surface area or volume of the house; in some regions the limit could be even lower. To make sure that your project falls within these parameters, have experienced personnel check the terms of reference in force in the region where the property you wish to enlarge is located.

Tips for expanding your home

As you may have guessed, an extension of the house is a rather complex thing to do, which must be taken care of in every detail, starting with the bureaucratic ones. To begin with, try to understand what are the necessary extensions for you, to make sure that they fall within the maximum 20% that you can make. If you want to add a bathroom or a kitchen you will spend more; these will have a higher cost than a living room or a bedroom, which do not need water pipes or a connection to the drainage network of the house.

Start by fixing in your mind what you want your home to look like, and then ask for help from those who are experts in the trade, to do it physically and in full compliance with the law.

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