Then there is an entrance from the back that leads you into the kitchen, plus you can enter from the main entrance in the front that has stairs that lead you to the other end of the apartment.Yes, you make valid points; it might never happen but you never know what could happen in the future, so it's something I also need to think about.My previous tenant that was living there, was there for 20+ years and never had a complaint about the heating/cooling with her; so hopefully this continues with the next tenant. 

Is there a separate entrance to the second floor?

The Assessments levied by the Association shall be used exclusively for payment of Common Expenses including, without limitation (i) the upkeep, maintenance and improvement of the Common Areas and other maintenance obligations set forth in Sections 10.1 and 10.3 below; (ii) maintenance, repair, replacement, and operation of rights-of-way and easements within or immediately adjacent to the Project (e.g. landscaping and sidewalks within the right-of-way of adjoining streets) to the extent that such actions are required by government entities or deemed appropriate by the Board, (iii) promoting the recreation, health, safety and welfare of the Owners and other lawful occupants of Lots within the Property, (iv) payment of property taxes for the Common Area; (v) insurance premiums; (vi) legal and accounting fees; (vii) management fees; (viii) charges for utilities and other services provided to the Common Area by the Association, if any, and for all utility charges paid or incurred by the City and reimbursed by the Association for street lights in the Common Area; (ix) costs to maintain the entrance features, including any electricity, landscaping and irrigation expenses associated therewith; (x) the performance and exercise by the Association of its rights, duties and obligations under the Project Documents, and (xi) maintaining any Stormwater Control Facilities located on portions of Common Areas to the standard required by the governmental entity or agency having jurisdiction over such areas.

When electricity comes into a meter panel, the exterior panels can be expanded, separate meters can be installed, and of course separate service entrance panels with breakers.  

Last week, one of the tenants' dogs bit another tenant at the entrance of the property, as they share the entrance space and their doors are next to each other.

Both of them are by the bedroom and this new one I just completed a master bedroom build added on to the back of the house with a private entrance for myself so I’m currently renting out the other 3 beds.Which cost me thousands more than I expected due to contractors not performing like I had expected etc etc. 

It could be ideal for a house hack as there are two separate entrances, each with its own kitchen and bathroom.

If you were looking to house hack I would recommend finding something that you could rent the top out as an air bnb (STR) and live in the basement with a completely separate entrance. 

Both of them are by the bedroom and this new one I just completed a master bedroom build added on to the back of the house with a private entrance for myself so I’m currently renting out the other 3 beds.Which cost me thousands more than I expected due to contractors not performing like I had expected etc etc.

Sight line distances for entrance approval, shared drives for multiple lots.9.