Find out what your net profit will be after the sale. Call your mortgage company and request a payoff. Be sure and get the actual date the payoff is good through and don't be surprised if the lender shows an extra month of interest you didn't expect. This happens when you were given a month's "grace period" in the initial first payment due at the time you made your original purchase. If you have lived in your home for less than 5 years, make sure there are no pre-payment penalties if you exercise an early payoff on your mortgage loan.

Plan a basic calculation as to your cost in preparing and selling your home. Be sure and include repairs, cleaning services, contractors, painters, realtor fees, etc.

As a Seller you will almost always incur the expense of a new title policy, and in Texas they are expense. Also, you may wish to have your home appraised to ensure you know its real value. Providing a home warranty to the new buyer is a very effective listing marketing tool. The cost to you is usually under $300.

Finally, you need to estimate what you will spend if you purchase a new home after your current home sells.  Just like the person who will be buying your home, you will have similar expenses when you purchase yours as well. You will still have some title charges, appraisal fees, insurance costs, inspection fees, possibly a survey cost and down payment expense. Normally, there is no Realtor fee to you as a purchaser.