Simple answer No. Complicated answer Maybe. It will depend on a. If the buyer is willing to pay more for the property that what the value is. 2. Buyer has enough money down that the financing will not matter to the equation, and still is willing to pay more than the house is technically worth. 3. Bank is ok with the value/loan ration. 4.Buyer is paying cash, and doesn't care what the appraisal is.
Another option is to have another appraisal done after any improvements you make, to justify to the price and value of the home. Any buyer to the property that will be obtaining financing will be having an appraisal done, no matter what your appraisal states. The bank/lender requires it.
PS I personally paid 3K over appraisal in North Las Vegas, simply because the house had everything we wanted, including a back yard that would of cost easily 25K+ to put in. HOWEVER the negotiated price was actually more that what we finally paid, and we split the difference with the seller. It was not an issue with the bank because we were putting more than 50% down. Good luck.