If you ask a contractor for an estimate, you’ll most likely get a quote that’s just plain wrong. We’re talking a +/- 30% difference (or worse). 30% too high, and you won’t get the best value for your money. 30% too low, and you may be left with a hole in the ground while you scramble for financing.

Steve, a homeowner in Berkeley, wanted to add more space to his one-bedroom, one-bathroom home. He hired New Avenue to design and build a second story with an additional bedroom and an additional bathroom. Here are the plans and costs.

Debra and Brad, the owners of a beautiful hundred-year-old home in San Francisco, needed more space for their family. They came to New Avenue to add a bedroom, a bathroom, a living area, a new deck, and a staircase. They also wanted to expand the existing kitchen.

Here are the floor plans and the cost.