For a couple of years now, would-be investors in homebuilding stocks have been waiting for a bottom. However, I suspect that we  may not be much closer to a cyclical nadir than we were back in 2006.

As The Wall Street Journal observed at the end of last week, Texas-based builder D.R. Horton (NYSE:DHI), the nation's largest homebuilder on a unit-sales basis, has been selling land hand over dirtpile, mostly to reap tax benefits. I'm looking for other builders to do the same in coming quarters. Horton's approach is to apply losses from today's sales of land and other assets to past profits and get a tax refund -- assuming those profits didn't occur more than two years ago. As it happens, 2006 was the last year that most builders chalked up any meaningful profits.

In Horton's case, there seem to be plenty of losses to weigh against past gains. For instance, the company apparently unloaded a couple of thousand lots in Desert Hot Springs, Calif., for about $8 million. That's reportedly less than a tenth of the company's purchase price for the parcels.

Horton stated in June that it expects to receive tax refunds approaching $520 million during the next couple of years, but it isn't the only company taking advantage of this particular tax law. As 2007 wound down, Miami-based Lennar (NYSE:LEN) received a $200 million tax refund from the sale of 11,100 lots to a joint venture it was involved in with Morgan Stanley (NYSE:MS).

The key here is that essentially all homebuilders have been pushed to use red ink in their quarterly releases for several quarters now, thanks to charges that were largely land-related. For instance, Pulte (NYSE:PHM) took more than $220 million in its most recent quarter, while Toll Brothers (NYSE:TOL) wrote down $84.3 million after tax, and Ryland (NYSE:RYL) took pre-tax charges of nearly $135 million before joint venture impairments.

While not all these charges involved land, it's likely that there will be more writedowns -- potentially some big ones -- in the offing for builders across the U.S. in the coming quarters. The result almost certainly will be a continuation of red ink at reporting time.

In the face of that, Foolish investors would be well advised to give the sector a wide berth until a loud and clear all-clear signal arrives.

Of the companies mentioned, only Morgan Stanley rises to the level of even two stars in the opinion of Motley Fool CAPS players. Do those ratings include your opinion?

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Fool contributor David Lee Smith doesn't own shares in any of the companies mentioned. He does, however, welcome your questions, comments, or criticisms. The Fool has a disclosure policy.