So far so good, but then a woman who was the local member of the District Council got wind of the project and sent someone from her office to look over the place. The next day, the Department of Buildings' approval of their plans was abruptly withdrawn.

It turned out that there was an obscure law on the books concerning Clinton, one that even the Department of Buildings was only vaguely aware of. It said that in order to preserve the "family character" of the neighborhood, no renovation could alter the number of rooms in a residential building. Not the number of apartments, mind you, just the number of rooms.

That was when they showed up at CitiSpace in despair. They wanted Ally to help them by doing some kind of design that would satisfy the law and also give them the open, airy feeling they had set their hopes on. On the face of it, their two goals seemed mutually contradictory and impossible.

He was short and shy and she was plump and sassy and Ally liked them both a lot. Sometimes in this business she sensed she was helping people realize their dreams and that was a very rewarding feeling. Real estate was an emotional thing. Your home was a part of you. She always tried to get to know people before she did any designs for them. Sometimes design was more psychology than anything else.

But this time she had to solve a problem before she could wax creative. If their plan for open space could be stopped by some obscure local provision that even the Department of Buildings was fuzzy about, then maybe there was some other obscure law in the Housing Code that could be used to fight back. The full code had recently been put on the NYC Web site, so she wanted to go over every page and see what she could come up with. And she wanted to do it in the office, undisturbed with all the architectural plans close to hand.

The office was deserted when she cruised in and clicked on the lights. She got on the expansive NYC Web site and started poring over the Housing Code, though she was still obsessing about Nina. What if this doctor in New Jersey actually could do something for her?

Finish here, she told herself, and then go home and read the guy's CV.

A pot of decaf coffee later, she came across a little‑known fact, which she now vaguely remembered from her days as a practicing architect. If you installed a fifteen‑inch drop across a ceiling, that was technically a wall in the eyes of the NYC Department of Buildings. The space on each side became a separate "room."

As they say in the movies, bingo.

In fact, why not do a honeycomb ceiling that would actually simulate the industrial look they were seeking, anyway? The ceiling was over eleven feet high; there was plenty of vertical space. Nobody would know it was just a sneaky way to get around a funny local aberration in the Building Code.