Buildings: construction secrets

Build a building? A company that may seem simple to the buyer but represents a real technical, administrative and commercial challenge for the developer.

Building a building is a much longer and more complex operation than purchasers generally imagine. Here a wood residence in the process of completion signed Rei.© REI

Between the sale of land and the delivery of an apartment, what is happening? What are the main steps that allow a residence to see the light of day? How is the buyer involved in the project? Decoding of a building construction in outline.

1. The choice of the site

Green spaces are becoming more and more attractive to buyers.

First step, the choice of a field. The presence of infrastructures, services, shops, liberal professions, transport is essential. Alain Goujon, director of production and cost control at Nexity, explains that to know if a land is suitable for a construction project and if so which, “Nexity has developed an instrument that allows for an extremely fine analysis of main pools of jobs, the profession of people, income on the commune. “

Proponents are also trying to find locations with as little nuisance as possible. Green spaces will be a real highlight. The region will be a key factor in launching the project. For Norbert Fanchon, CEO of the Gambetta Group, “in the tense areas of Paris and the First Crown, the Alpes-Maritimes and the French Genevois, we do not hesitate to embark on an operation”. Elsewhere, where the market is mostly driven by investors or competing with the individual house, “we are more cautious, we want to be sure to market our programs.”

2. The feasibility study

Located in Limeil-Brévannes, South Perspective is a construction of the group Gambetta. Under its apparent simplicity are hidden many attentions to standards and architectural details.© Gambetta

The building permit is not easily obtained. The mayor and the local authorities will have to approve the project. The proponent must therefore carry out an analysis on the urban plan to know what it is possible to do in the municipality according to the architectural, environmental notebooks … It must gather technical data, on the ground for example with a geotechnical study . “We see if we have to do a demolition, we study the history of the site to know if it is a former industrial site or not, whether or not to consider cleansing the soil which implies not insignificant expenses from a financial point of view, “ details Alain Goujon. Because for his part,

At the same time an architect studies the feasibility of the building: its shape, its position … It is then that are defined more precisely the typology of the apartments and the percentage of studios, two rooms, etc. which will be built, which will determine the architecture of the residence. The developer asks the architect to develop his project according to the destination of the property. “We have to find an economic balance,” says Isabelle Megnegneau, director of Réalités agency in Rennes. ” The exit price of the property must correlate with the neighborhood. An ambitious architecture, beautiful materials, large balconies … all this will be possible only on exceptional locations. “He also asks him to respect the specificities of his buildings. For example, at Rei, a company specializing in the eco-construction of wood buildings, “we are looking for new generation technical solutions, we are in the process of innovating with partners who want to build” differently “,” explains Paul Jarquin.

3. The building permit

A building under construction by Agence REALITES Rennes. The buyer can begin to imagine more concretely his future residence.© Agence REALITES Rennes

The training phase. Once the building permit has been filed in town hall, the training phase starts from three to six months depending on the characteristics of the project. From the display in town hall and in the field, administrative appeals can be made by third parties, that is associations, residents … who dispute the project. “This challenge can be amicable,” says Hervé Puybouffat, president of Tagerim Promotion. “But the petitioners can appeal to the administrative court. As a result, the project is stuck for several years. “The developer must wait for the building permit to be purged of these remedies. Then the mayor gives his consent or not. If he refuses the permit, he must explain why. If the mayor grants the permit, the preparation for the commercial launch can begin.

INDUSTRIAL BUILDING CONSTRUCTION PROJECT: THE STEPS TO FOLLOW

Building an industrial building involves following certain steps and carrying out many administrative and other steps. Whether you decide to go through an architect or a builder who will guarantee you a turnkey project, the phases to be respected remain generally identical. The main steps mentioned below are in the general case. They may differ depending on the project.

DEFINITION OF THE CONSTRUCTION PROJECT AND IMPLEMENTATION OF THE BUILDING

The first step is to determine a project that meets your needs, expectations and financial constraints while choosing a geographical area for the establishment of your industrial building.

THE FEASIBILITY OF THE PROJECT

This first major step in the construction of an industrial building involves several phases.

  • Exhibition of the
    BEATI project has a project owner and an architect who will collaborate in the construction project of an industrial building. The client will thus expose the client’s project to the architect. It is then that the latter can help him to achieve it in the best conditions.
    He will inform him particularly about the conditions relating to the land, the construction, the functions of the building and the steps required.
  • Sketch studies
    Following the results of its first feasibility study, the BEATI architect made a first sketch study taking into account the parameters related to the land, the construction options and the allocated budget.
  • The pre-project studies, AVP
    If the project owner proceeds, on behalf of the client, to the project of sketch, the architect pursues his studies of preliminary draft: APS, Preliminary-draft-summary ( precise description of the different options, estimation of the costs and the duration) and APD, preliminary draft-final (last adjustments taking into account the options selected by the contracting authority notably the choice of materials and technical services in conformity with Thermal Regulation 2012, RT 2012).
  • Application for a building permit
    As part of a building permit application, the BEATI company is responsible for providing an architect who will put together the entire file containing the technical documents, plans, material definitions, networks and fluids, as well as administrative and legal documents. The architect, in collaboration with the building owner, follows the building permit file and brings any additional rooms required until the permit is obtained.

DETAILED DESIGN OF THE ARCHITECTURAL PROJECT

This step is for BEATI to put in place the expertise and professionalism of the architect to develop the detailed plans of the future industrial building to ensure the understanding of the entire construction project. During this phase, the design offices selected by the architect and the client, ensure the regular development of the defined action plan.

PLANNING THE CONSTRUCTION OF THE INDUSTRIAL BUILDING

In order to carry out a planning of the construction of the industrial building, BEATI undertakes to provide an architect who will carry out studies and implementation plans:

  • the business consultation file detailing the technical and administrative characteristics of each batch of the construction project, and estimating the respective budgets. This document also makes it possible to specify the framework of intervention of the companies as well as their relations with the owner and the architect.
  • the execution plans, which define the technical realization of the construction project: plans, calculation notes and specifications allowing the execution of the works.

CHOICE OF COMPANIES

Various tradespeople work on the construction of an industrial building. BEATI’s mission is to choose the architect or the client who will consult the various companies able to intervene on the project, and analyze the offers proposed by the craftsmen. Once selected, companies contractually commit to costs and deadlines.

ON SITE

The project manager intervenes to ensure a good organization on the building site and an execution according to the phases of construction of the industrial building: the earthworks and the connection to the road network and the various networks, the carcass work (foundations , structures) and the second work (sealing, aesthetics, comfort).

BEATI undertakes the scheduling and on-site planning that intervene in addition to the project management. It aims to plan the interweaving of the different interventions of each company to optimize costs and deadlines.

The construction of the completed industrial building, the architect or the turnkey builder, controls all the works, attests to the taking into account of the thermal regulation 2012, and balance the account of the building site.
The delivery of the building can then be done.