They are big time dis-jointed and killing your curb appeal.

Selling with lack of curb appeal, stained carpets, needs of repairing, etc, should directly insinuate that you are not getting retail top dollar.

Realtors might be another avenue.The details you mentioned are things surveyors deal with regularly and they should know what you'll ultimately need if you tell them your plans.Below is a checklist of things I regularly ask of my surveys:Utility LocationsDepth of SewerMeter LocationsStormwater Drainage & FlowTop of Gutter & Flow Line ElevationsP/L to P/L across the streetStreet RadiusPaper Street dimensionsROW dimensions Sidewalks, curb cuts, aprons along property and neighboring propertiesExisting structures and improvements. 

The permits have been pulled and ground work for the subdivision has started i.e. streets, curbs, utilities, etc.

A threshold utilizing pavers or grid at the garage or curb cut might be an idea to get you the few square feet you need.

Most of it is to create better drainage away from the structure to protect foundation and some is for better curb appeal and better use of the back yard. 

If you can get a 4 unit and a basement, that would be ideal and create major cash flow and equity creation, plus you can not worry about a property manager and boost your yield.

If your income (not mine unfortunately) is $2 billion and your debt is $2 million.... shouldn't that BOOST your score?

While I say that tongue-in-cheek, we've found that the level of preparation we've invested in the property (finishes, curb appeal) and the systems we've put in place to vet applicants provide ideal tenants regardless of location.

Debt snowball would mean focus all extra money on the smallest mortgage with the presumption that paying it off will give you a psychological boost.