My property has been for sale for 2 years. The notary had sent a declaration of intent to alienate to the municipality, which waived its right of pre-emption. Do I have to make another declaration to the commune if I find a buyer?

I put my property up for sale 2 years ago. The notary had sent a declaration of intent to alienate the municipality, which had then waived its right of pre-emption. The sale ultimately did not go through. I found a new buyer. Is it necessary to re-declare to the municipality? 

No. If the municipality renounces to exercise its right of pre-emption, the seller can sell his property without having to make a new declaration provided that the sale takes place within 3 years following the renunciation and at the price fixed in the initial declaration, revised according to the variation in the construction cost index (art. L.213-8, para. 1 and 2 C. urb.).