Visit http://www.irs.gov and search tax credits for homeowners and then within that search search homeowners again.
There are quite a few from business use to insurance premiums to energy and mortgage interest paid.
Hope this helps.
Increase take home pay by completing W-4 form.
Homestead and over 65 exemptions
Moving expenses if moving more than 50 miles
Capital gains exclusion up to $250,000 for single individual or $500,000 for married couple
Real estate investors can deduct up to $25,000 per year