About us The first records of FLENER Inc. selling construction materials date back to 1899, when it started its activity in Mamer and served clients from the entire Grand Duchy of Luxembourg. In 1990 the real-estate agency IMMOBILIEN GUY FLENER was founded and since operates a licensed real-estate agency and broker in renting and selling property. Each rental and selling agreement is preceded by a proper & accurate market evaluation of the property up for sale/rent. Since, and following many subsequent constructions of residential buildings, all of high standard and latest technology Luxembourg is known for, IGF.LU extended their business and lines to REAL-ESTATE PROMOTION. Today IGF is among the first real-estate promotion companies in the Grand Duchy. The services IGF offer are sound and their business owner has a flawless reputation and many years of expertise. IGF was not only remarked for the good choice of property grounds , their hand-picked architects but also the knowledgeable intervention between sellers and investors, reducing the risk and personal exposure of both parties. In 2020, the company and group IGF will turn 30 YEARS. And claims to be « the local/international real-estate advisory bureau" Clients who seek IGF’s services are both locals and international. When contacting IGF (phone +352 313066), your call will be received in your language (they speak Luxembourgish, French, German, English). Ask for the department you are interested in, an expert will take care of your request instantly (Monday- Friday) 9-12 and 14-18hrs.