The space mother and daughter design team Carolyn Wilson and Elizabeth Boland of Design in a Day was given wasn't much more than a warren of closets and a hallway.  Now it's a striking, chic transition space packed with a bold, cohesive design.  The walls are papered in a stamped alligator pattern and the ceilings are painted in Farrow & Ball Dayroom Yellow.
(First two images from their blog Haute Couture)

And speaking of challenges, the Master Deck was a forlon long and narrow space, barely 6 feet wide and dated by some unfortunate scrolling iron work.  Shannon Munn and Amanda Welch of Ambi Design Studio transformed it into a private retreat with a very smart furniture plan and the addition of a custom shaded cover attached by a light weight railing system.
Art panels were created from enlarged photographs taken of a Georgetown garden and custom outdoor mirrors visually expand the space.  The dated scrollwork was cleverly hidden by a series of pedestals and benches that create a feature wall and add to the intimacy of the space.

DC Design House
April 14th - May 13th 2012
4951 Rockwood Parkway, NW, Washington, DC
Hours: Saturdays-Sundays 12 p.m. to 5 p.m.; Tuesdays-Fridays 10 a.m. to 3 p.m
Ticket price: $20

p.s.  Blogger, I'm not convinced your new format is really that user friendly!  While I like some of the features, the control panel and the ability to move back and forth between old and new posts is awkward.  Curious to hear what other bloggers think.