Lexington Two-Story Addition and Kitchen
The project
This roughly 90-year-old colonial had a small one-story wing on the side and a first floor that was split into a separate kitchen, living room, dining room and family room. The plan was to add space upstairs and open up the first floor.
We drew the existing house first, then designed a two-story addition at the side of the house with a new primary bedroom and bath upstairs, plus a small sunroom bump-out off the back on a new block foundation. Because the original house sits on a mortared fieldstone foundation, we had a structural engineer inspect it before construction; he confirmed the framing was true and level and the house could carry the addition.
Downstairs, a wall came out so the new living room, dining area and kitchen read as one space. The kitchen got white shaker cabinets, dark stone counters, double wall ovens and a peninsula with seating under glass pendants, and the old painted brick fireplace was refaced in slate tile with a wood mantel. Upstairs, the new bath has a white double vanity with a marble top and a glass-enclosed subway tile shower. Oak floors tie the rooms together.
What's included
Add-ons
Before and after
BEFORE
AFTER
BEFORE
AFTER
BEFORE
AFTERThe floor plan, before and after





Finishes we used
Questions about this project
What did this Lexington addition include?
A two-story addition at the side of the house with a new primary bedroom and bath upstairs, a small sunroom bump-out at the back, a wall taken out to open the living room, dining area and kitchen, and a new kitchen.
Can you add on to a house with a fieldstone foundation?
Often, yes. Here a structural engineer inspected the mortared fieldstone foundation before construction and confirmed the house could carry the addition.
How long did construction take?
About 33 weeks from the start of construction to completion.
What do projects like this cost?
Addition, kitchen and bath projects we built from 2020 to 2025 typically ran $355k to $545k. Your price is set in a fixed-price agreement before work starts.