AHL provided pro-bono historic architecture services to the Hawaii Conference Foundation (United Church of Christ), a non-profit foundation, for the repair of the historic Ka’ahumanu Church. The building is on the Hawai'i and National Register of Historic Places. It is a civic and religious symbol for the community and is historically significant for its connections to important Hawaiian and missionary figures. It is an excellent example of the use of native materials in the adaptation of a New England-style Gothic church.

Completed in 1876, the 2,100-square-foot building has two-foot-thick plastered lava rock walls and a steep gabled roof. The clock tower, added in 1884, holds the original German clock that still runs and continues broadcasting the time to the surrounding community. The repair project includes portions of the exterior walls, the roofing, windows, and repainting.