Figure out an average for all utilities and then split it based on square footage, number of occupants, or whatever formula you decide on.

.$30 sq/ft-carpet, paint, blinds, cosmetics, bathrooms, kitchen, roof, cement work, etc.So basically he grades the property 123 (abc) and the applies the cost per sq/ft to the total square footage of the property.Does anyone else use a similar method to help them save time analyzing deals and focus on deals that look more appealing?

The previous owners were using it as a shop.The square footage of the shop wasn't included in the listing. 

Painters for example will take the sq. footage of wall space : example 10x10 room will have 40 Linear feet of wall by 8' height this is 320 sq ft. of painting area.

Start digging now, because they will need to be at least 7ft to be considered in your square footage when you sell and now would be the time to do it. 

Adding square footage (addition) is another great way to add value so long as your existing market conditions pencil out that the cost of construction is at a rate below the price per sf of the resale value.

@Tarl Yarber how much did it cost to finish out that square footage in the basement?

And unless you get it permitted, it is tough to count as real sq footage.

It’s a system by which an owner of a master-metered building estimates each unit’s utility cost by factors such as square footage, number of tenants per unit, or other factors, and passes on the utility cost to individual units accordingly. 

The current sq footage is 1100 but curious about adding footage while going through all the rehabilitation.