I like to keep my hourly rate as high as possible and if you think about the fraction of Profits / Hours there are only two ways to improve things: make more money or spend less time.

Continuos improvement

It might be a bit optimistic to be able to raise the price $30k with no improvements.

It looks like J got the message about his picture, now he has his wife in his profile pic and that is definitely a huge improvement!  

I found that Costs includes "the amount reasonably spent by the purchaser for maintaining, preserving, and safekeeping the property, including the cost of: property insurance, repairs or improvements required by a local ordinance or building code . . ."  

(No new blood, no new money, no drive to improve the neighborhood or the schools.)What about the homeless?  

Just walk right into your county surveyor or planning department with your map and see if they recognize these are legal lots of record.. or you could order a title report that should give you individual descriptions if they are legal.then you would talk with city engineer  or City manager about improving them so you could build on them if that's what you want to do...

Can anything be improved?

I'm planning on selling the property now and since the appraisal was done I've made a few improvements and would like some opinions on what you think the property may now appraise for.

If it's an older building, you could be on the hook for capital improvements down the road (I've witnessed firsthand).