I'm in construction can I claim miliage between houses and also can I claim tools purchases and tool rentals. Can I also claim my office in my house that I use for work.

If you are self-employed, you can claim mileage, purchases, rentals,
Square footage of office in your home. There may be many things that you can deduct that you are not aware of. I would suggest going over your expenses with an accountant on how to categorize them properly. In this case, study a Schedule C:
http://www.irs.gov/pub/irs-pdf/f1040sc.pdf

What RoseMcs says is all true.

Note that commuting from your home to your FIRST worksite and from the last worsite to your home is NEVER deductible.