Landlords can enter a tenant's property for a variety of reasons, including: Making repairs or replacements Responding to a tenant's request Removing unauthorized window coverings Preventing waste of utilities Changing filters, testing, or replacing smoke detector batteries Inspections Helping with an emergency inside the unit Posting a notice of eviction"Research your state laws because some of your comments indicate a lack of understanding of the landlord/tenant laws where you are operating (like threatening the tenants to keep the security deposit if they don't respond to you, I doubt that is actually a valid reason to keep their deposit, or evicting for late payments, or charging the tenants for your warranty repairs because you missed your 11 month inspection window which was your responsibility, and it looks like your lease says you can charge up to 18% interest for unpaid fees, is that actually legal?).

I will likely be challenged to get a 1 to 1 return on adding the AC, adding an EV charger, converting a sound studio to an office, and furnishings.

Batteries wear out, that's just reality, and were talking batteries for a house, yeah, that's $.

Further Evaluation (Professional based)Comment 2: Yard wetComment 23/24/25/26/27: Electrical WorkComment 4/5/6/7/40: Glass repairs/sealedComment 28/29/30: Hvac repairsComment 49: Chimney inspected/cleanedRepair (Handyman based)Comment 3: Vegetation removalComment 12: Leaking hose bibComment 13: Sewer cap replacedComment 19: Door knob replacedComment 22: Replace all batteries in smoke detectorsComment 38: Replace clamp in sinkComment 39: Replace dishwasherComment 41/48: Dry wall prepareComment 44/47: Door repairHave you decided on a property manager yet?

Lightbulbs, batteries in smoke detectors is on them and written in the lease.You can really do whatever you want if it is written in the lease contract but bear in mind they don't own the home and won't care on certain things.

They do not just stop paying because there is a door knob loss, or a smoke detector missing a battery. 

Add a couple of chargers, no problem. 

If that's the case, you would charge rent + utilities + water or just lump it into one rent fee.One thing to keep in mind is that friends often bail on deals like this once you get it so you have to be prepared to have to figure it out if you get the house and he isn't interested.

I use Executive Villas and they just charged me $500 to repair some table legs and replace the batteries on a remote.

I just got quoted $160000 for a four unit plus in law in Brookfield including permit and all related fees. for an extra $3500 I can add two EV chargers, but will receive a $16,000 credit from ComEd.