Fresh off the completion of an incredible addition in the country, Bryan itches to keep the renovation momentum going. Rather than take a much-needed break, Bryan instead breaks into the untouched existing house without Sarah’s full approval. Bryan’s pricey vision for a vaulted ceiling over the foyer doesn’t sit well with Sarah whose design budget is being kept on a tight leash.

As Sarah and Bryan try to nail down the layout so they can frame and get to the drywall stage, Sarah and her designer Trish have a big fit over a tiny powder room. Just as they think they’re back on track, Bryan and Sarah go on a family vacation only to come back to yet another problem, this time at the hand of their electrician.

Feeling good about getting to the drywall stage, Bryan is adamant that they keep the build moving forward. The only problem is the powder room is stuck at the studs stage because Sarah is dragging her heels on choosing a vanity. Bryan's frustrations hit an all time high when this small powder room becomes a powder keg.

The project really opens up as Sarah and Bryan break down the last wall between the old and new house. Bryan finds time for an old project close to his heart and tries to make progress on it without Sarah finding out.

Lots of progress on the interior and warmer weather has Bryan thrilled he can begin work on the exterior landscaping. In the past, Sarah has been hands-off on making design changes on landscaping, but this time when she gets involved Bryan ends up paying the price literally. Bryan finds out Sarah’s keeping secrets from him and his frustration grows when he finds out about a plan for an indoor tree.

Bryan finds time to work on his own projects including one that Sarah doesn’t know about. Just when they thought they were past having issues in the powder room, Bryan discovers the hard way that when it rains, it pours.

Furniture starts arriving at the house as Bryan has to stay strong while he braces for what arrives at the house. Issues come up at the eleventh hour as Sarah’s chandelier in the front entrance makes Bryan hangry!

After three long years, Bryan and Sarah wrap up the build and complete their forever home. The show journeys back to where the series began as Sarah and Bryan reflect on the build’s best and bumpy moments. The end gets a little sweeter when Bryan plays a prank on Sarah.