The housewarming is a specific kind of party. The venue is not incidental, it is the whole reason for the event. People are partly there to see your new place. That changes how you run it, because the goal is not just a good night, it is people leaving with a warm feeling about your home rather than a sense they just attended an open house.
Give the tour early, once
People want to see the place. Give them the tour, but do it early and do it as a group rather than repeating it eleven times as each guest arrives. Once everyone who wants the tour has had it, the place stops being an exhibit and becomes a party venue. The mistake is letting the tour run all night, which keeps the whole event in viewing mode and never lets it settle into a gathering.
Set up zones
A new place often has rooms people have not learned to use yet. Decide where the drinks live, where the food lives, and where people will naturally stand and talk. A party flows toward food and drink, so placing those thoughtfully shapes where the crowd gathers. You want people spread comfortably, not all jammed into the kitchen because that is where the only obvious thing to do is.
Invite across your whole life
Housewarmings tend to mix groups: old friends, new neighbours, people from work, family. That is part of the charm and part of the challenge. Many of these people will not be on the same apps, and some will not be on any. Invite by whatever reaches each of them, email for the older crowd, a text for the close friends, a link in the group chat for everyone else. The point of a housewarming is the breadth of people, so do not let the invite method quietly narrow it to only the friends who happen to use the same app you do.
Ask for nothing, or ask clearly
Some hosts want a no gifts housewarming, some are quietly hoping for the odd plant or bottle. Whichever you are, say it. "No gifts, just bring yourself" relieves people who would otherwise stress about it. If you genuinely would love help stocking the place, a light touch line about a bottle for the new shelf works. The worst option is leaving it ambiguous so half your guests arrive empty handed and feel awkward about it.
Let the place do the work
You do not need to decorate elaborately or cook a feast. The new home is the feature. A bit of music, decent lighting, drinks within reach, and the people you wanted to share the place with. That is the whole event. The house warms because the people are in it, which is the entire idea behind the name.