The dissertation’s objective is to create a reference manual to project an installation of optical fiber in a building (for each house or business) in either horizontal deployment (rack configuration, splicing boxes, duct network, ...) and vertical deployment (the building itself). For give these guidelines, we use an example project to show what we’re trying to achieve. This manual is designed for engineers or designers wishing to compare their approach with the approach of a company specialized in this sector, and that, while this one is been overseen by a state telecommunications operator. By this way, we get greater credibility when we advise an installation. First of all, we will present the current state of telecommunications in Andorra, as well as the existing legislation that regulates it and the objective of the proposed deployment of FTTH. In the following chapter, we will explain in detail, what is FTTH technology, which are the elements that make up this kind of network, the various topologies existing,... Then, we will make a summary of the engineering rules used for projecting both horizontal and vertical deployment, based on customer’s criterion, as well as the experience of the company in optical fiber. Later, we will introduce in the case that concerns us: the description of the area to project with some documentation, on the one hand to make the horizontal projection (studies of population density) and secondly, to make the vertical projection of each unique building (structure of the buildings); Will continue explaining the solution adopted in each case, as well as all the elements involved in each building (materials, kinds of splices, measures,...) according to the criterion described above. At the end, we will give an overview of the status of the area once has been validated and installed.