Building Industry Planning and investigation; Construction of foundations and bearing structures in reinforced concrete; Hydraulic and heating systems: Systems for the collection of refluent, grey or black waters; Construction of masonry work; Laying down of wooden floors; Construction of swimming pools; Restoring of old buildings; Evaluation of land permutation; Real Estate Direct sales of newly built houses; Technical consultancy for the purchase of houses and apartments; Sales and estimate of building land; Real Property Management Management of real property; Key keeping; Payment of bills; Cleaning service; Intermediation and general management of properties;