A six-bedroom, eight-plus bathroom townhouse on East 84th Street between Madison and Park avenues has reappeared on the market for $36 million, after asking just $25 million in September. The bonkers $11 million price hike is part of a long history of erratic asks at the address; the same townhouse wanted just $9.5 million in 2010 when it was still divided into three floor-through apartments plus an owner's suite. Its current LLC-shielded owner purchased the townhouse for $8.15 million in 2011 and sketched out plans for a gut renovation that would convert it into a single-family home. The staid Upper East Side residence that appears today for $36 million is the culmination of that plan. As of the townhouse's September listing, the remodel was still unfinished. Living in a house under renovation is no easy feat, but for the owner, toughing it out just might be worth the added millions they may net for seeing it through to completion.