Rough pricing for a deck replacement

Is there a simple way to do a back-of-the envelope calculation for a deck replacement?

Specifically, I’m interested in better understanding:

  1. Simple way to estimate cost to remove an 18’ x 16’ deck
  2. Simple way to estimate the cost to install a new deck of the same size
  3. How to price an enclosure to this deck

Are there any other things to consider when pricing this out?

All depends on the design of the deck, area, materials and contractors some contractors are affordable some vary pricing but can run from $12 to $18 square foot in VA for treated wood and up $35 for composite

There are alot of factors involed type and quality of materials being used were you live area of nation. If your looking for a rough estimate on the project you can google certain phrase and your city and get a idea of any type of project that cost there per sq ft even will give you a breakdown on the average labor cost in sq ft priceing guildlines. Of course this is just a rough idea of cost but you will know therange of what it cost and if the contractor coming to give you a estimate is giving a fair marketg price