There are a few recommended tools that you'll need in order to start building your outdoor deck: 

*circular saw

* power drill

* tape measure

* hammer

* chalk line

* level

* combination square

* framing square

* hand saw

* gloves

* goggles

* dust mask
Have you decided how you would like to use your outdoor deck?  When making the decision of the size of your deck, think about whether you will need to host large groups of people or just a small group of family members.  Will you have an outdoor room with multi layers or a single-layered deck?  How many chairs or benches will your outdoor deck need to accommodate? Will you have one table, several tables, or no tables on your deck?  Also, and most importantly check with your community's building laws and regulations; the size of your deck may ultimately be determined for you. 
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