Kevin arrives to find the newly issued building permit affixed to the building and work finally getting underway. Holly is officially on board, and Kevin pays a visit to her office to see the first pass at floor plans, elevations, and a scale model of the cottage. Zoning laws only allow for a modest increase in overall volume, so the new one-bedroom cottage will be less than 1,000 square feet when it's done. Norm and Tom prepare to brace a bowed wall, but find a badly rotted sill that needs replacing before they can proceed. Putting Kevin to work, they build two temporary walls; once they're in place, they takt the weight off the compromised outside wall. The rotted sill comes out and a new, pressure-treated sill goes in. Then Kevin visits a converted carriage house in Winchester, Massachusetts, that's full of great ideas for the project. Unexpected rain postpones the excavation for the foundation of the new addition.