They won’t. However, it will get built as long as there’s a profit to be made. And it’s more profitable to build a 2/3/4/5/6-plex on a single lot than an singl

They won’t. However, it will get built as long as there’s a profit to be made. And it’s more profitable to build a 2/3/4/5/6-plex on a single lot than an single family unit. It’s just not legal in most places. Make it legal and the development will come. Every house replaced with a 6-plex is an excellent increase in density. The government can even optionally add a land value capture requirement to one or more of the units to make it permanently affordable to low income workers.