I have a place in a cohousing community.
Legally the units are condominiums, individually owned and occupied. We have a common house with multiple guest rooms and other spaces (exercise, art, library, office/internet cafe, laundry, big kitchen & dining room, kids play room, living room with TV & piano, workshop, garden, lawn, pool, etc.). Each adult resident is expected to do a few hours of work each month, nothing onerous and not strictly enforced.
It's easier to have a smaller individual unit when your infrequent guests can stay at the common house.
I could skip the gym membership since there is a pool and exercise room as well as being close to a long walking path.
There could be minor grocery savings with getting some produce from the community garden and fruit trees.
Definite savings come from the water system. The water is not individually metered so we don't have all those flat monthly expenses. Helps quite a bit. Plus the water system is set up with both irrigation and household water so the community is not charged sewer fees on the irrigation water.
People who live close to the common house can use that WiFi for internet access. My place is too far away but when I had outages it was nice to just walk up there and have service.
We are within walking distance of Target, a couple grocery stores, Home Depot & Lowes, several restaurants, etc.
If/when I move back, I'd like to discuss doing a car share with some neighbors. I can think of several who rarely use their cars so it'd be nice to reduce the number of cars and the maintenance we each are currently responsible for.
Also minor savings. We have a monthly free day where people put out things they want to move on. The community has a chance to peruse and take what they can use. Things not taken are packed up and donated. This is one of my favorite things about the community.
Other savings. Active list serve when you can post if you want to borrow some tool/appliance, need a hand with some home project, need a cup of sugar for a recipe or have food you won't use and want to give away, recovering from surgery/childbirth and need someone to run an errand, just ask.
All in all, it's a great setup. For people interested, the website ic.org is all about intentional communities. They range from communes where everything is shared to setups like mine.