Does it have battery wall to power at night. 

I would echo what @Jaron Walling said about selling on a step-up basis. 4k a month on $1m in equity is a 4.8% return on equity.

If anything behind the walls was worked on, you need to check those before the wallboard goes up.

But in my past life as a high-stakes language exam tutor, I walked into a lot of households with very nice art on the walls where the kid being raised was thoroughly worthless, a complete waste of skin.

He did a full renovation and in the process switched from a wall heater/central forced air to mini splits.

He now owns a major commercial dry-wall company. 

New plumbing, electrical, and mechanical behind the walls? 

In between my agent and I would walk houses where human feces was smeared all over walls, flea infestations were so bad you had to spray yourself down in the front yard when you came out, and rugs with years of dog and cat urine baked into it.

Some repairs included, walls to be repainted (I caulked the holes from mounting tvs), garbage was on the ground in the in the alley, furniture was on the ground in the alley.  

He did a full renovation and in the process switched from a wall heater/central forced air unit to mini splits.