Many of the aspects of real estate that we now take for granted fall under the proptech umbrella. Before the internet, buying property - be it at a residential or commercial scale - was an often laborious process, involving physically visiting both a real estate agent or broker and the property in question. Now, neither is technically required. Listings can be found online, and can often come with highly detailed information and even 3D maps or video walkthroughs. In some cases, there is no longer a broker or estate agent involved - certain websites enable sellers to post their own listings and manage viewings and offers via an online portal.