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With the exception of the lightHouse, each Alchemy design is crafted to fit the owner’s program. For more detailed information about how we work, download Alchemy’s brochure.

Alchemy is an architectural design firm that works with independent factories and contractors around the continental United States and Canada to build our designs using various construction methods: prefab modular, prefab panels (a kit of parts), or on-site-building (stick-building). We work alongside the Owner throughout the design and build process. We do not sell ‘plans’—we see all of our designs through to completion.



Alchemy’s lightHouse accessory dwelling unit (ADU) is a predesigned, luxurious, crafted solution that can be delivered using modular, panelized, or on-site build methods. Designed to be low-energy and sustainable, they offer limited but meaningful options and floor plans that respond to various climates, sites, and orientations. The built Sebastopol lightHouse (#1!) and other initial sketches are chronicled here. For a look at the full lightHouse system, download the lightHouse brochure.



Prefabricated modular builds executed by independent factory partners are delivered to the building site essentially complete. Alchemy utilizes factories around the United States who are open to building contemporary custom homes alongside more traditional structures. Our fifteen+ years of experience building relationships within this industry makes a difference.

Image shown below is the Saddlehorn weeHouse, a modular, prefabricated home.


Panelized construction of walls or the roof are delivered to the site as a ‘kit of parts’ and assembled by the on-site building team. Infrastructure is added, interiors and exterior.

Image below is the weeBarnHouse constructed using modular, on-site, and panelized (shown) construction.


When high quality builders are available, and conditions are favorable, a typical on-site construction process is used.

No matter the method, Alchemy stays involved in the building process with on-site walk-throughs and status updates. A final discussion with the GC and Owner leads to the wrap- up design invoice.

Additional Services performed by Alchemy may include custom lighting and furniture fabrication, outbuilding design, and coordinating others including landscape architects, engineers, and specialty contractors. Additional Services are approved by the Owner in advance, and are billed on an hourly basis.

Image below is the site-built Cumberland weeHouse in progress.

For more detailed information on how Alchemy delivers design download Alchemy’s Brochure.

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