Sounds a lot like class-B units in ACT Strata. Our townhouse complex in ACT is Class B, and pretty much runs as you have described. Individual owners are responsible for heir own unit maintenance, but painting and colors need to align with the agreed common scheme.
The Strata fees cover common ground garden, shared driveway+lights, and our biggest cost, the Building insurance.
You might also want to consider stormwater and sewer services. In our complex Owners are responsible for those inside lot boundaries that serve individual units, but the complex is responsible for shared lines and those in common property.