This may involve installing drywall, flooring, and ceiling materials, as well as painting and decorating to your taste.A garage conversion can be a cost-effective way to add living space and potentially generate income but it is important to consider all the factors mentioned above.I've done two garage conversion.

removed deck and poured patio, created volleyball court in backyard, had to finish bathroom and closets, added barn door, and all the furnishings and decor.

As Deanna stated, non-decorative fences scream "management intensive property".As far as camera's, they are a deterrent if people see them.  

But between management fees, cleaning, travel cost, upgrading, decorating, furnishing, painting, insulation, heating and cooling, plumbing, and supplies we spent about $66,000 of that amount.

Wifey decided to date a gang member and his posse moved in around dec or Jan.

Plus we are looking at some serious money to decorate and furnish the 2/2 above the garage so I'd like to avoid that on the single family for now at least. 

I enjoy budget friendly designs and the decor aspect of flips the most, but also don't mind getting my hands a little dirty.

I added better lighting, decor and additional sleeping space on high end sofa sleeper.

During the three years living here, these guys never made an effort to decorate or furnish the place to make it look like home.

Typically I've found these individuals to be in higher tax bracket neighborhoods, their appliances are new (or damn near), they just don't fit the new decor of their home.I've had success with scratch and dent appliances...I would take someone with you who is familiar with appliances (like an experienced handyman) unless you're familiar with appliances yourself.