Renegotiating a Property with a Tax Lien Post-Inspection

[Benjamin Rosemont]

My wife and I have an accepted offer on a house with an income tax lien. The offer is contingent on the inspections and the release of the lien. We haven't performed any inspections, because we are concerned the property may not be released and we would forfeit the cost of the inspections. But we are wondering what would happen if the property were released, we had inspections done, and we chose to renegotiate the price based on the inspections. Would the seller have to go back to the IRS to have the renegotiated price approved, or could the seller simply accept the new offer?