We use carbon copy in letter size (legal size is just a pain).

You can order these as carbon copies which is what we do.  

You don’t want small condos that are easily carbon-copy for example as you have no way to stand out from competition and it becomes a race to the bottom.

.- Lighting fixtures- Smoke alarms / carbon monoxide detectors- Window and door repairs- Water heater maintenance

Sell the saving the planet, carbon sequestration and water conservation to the save the earth crowd.In Cow Parlance.  

Definitely go the legal route here, don't rent out the basement unless you have the OK from the relevant authorities--it's regulated for a reason (fire safety, carbon monoxide poisoning, etc.) and your insurance will not have your back if something goes wrong.

Smoke and carbon monoxoide detectors & fire extinguisher. 

Quote from @John Carbone: I think the Brandon Hall proposal is very interesting.

The city's Climate Action and Adaptation Plan aims to make San Antonio carbon neutral by 2050, with significant progress expected by 2025.

We provide smoke detectors, carbon monoxide detectors, fire extinguisher and change our air filters as needed.