Mosman Hall Project

Carletti Architects, Mt. Vernon


Mosman Hall is the sanctuary for the Sacred Heart Catholic Church, one of La Conner’s oldest buildings, which was built with funds raised by Louisa A. Conner, the town's namesake.

Nearly 2,000 square feet were added to Mosman Hall to provide more meeting and gathering space. The architects spent several years on the design, working to meet the congregation's needs while maintaining the building's historic integrity.

The addition includes a mechanical room, two bathrooms (each with stone floors and wainscoting), storage, and a large, open meeting area that features a coffered fir ceiling. Custom siding was milled to match the existing siding. Full fire suppression was installed in both the addition and the existing structure.

Due to the location, hundreds of yards of shale had to be removed and hauled off-site. The existing building's foundation was significantly upgraded, as it was 3 inches out of level in multiple directions. Much of the repair work was completed by Sacred Heart volunteers.