develop software for real estate in success always depends on yourself

Hello, my uncle has his own real estate company and wants to modernize his business, since he feels that he is running out of time while his competition is increasingly ahead of him, all of this is because he still does not have his own software to your real estate agency, that is why I want to help you by hiring a professional so that you can develop the software you need and your real estate agency can resume business, sales and even surpass the competition, but I don’t know anyone who develops this type of software, does anyone can you recommend me any?