Pre-Approved ADU Design Library

Modern Mill House

A compact, single-level one-bedroom, one-bath home offering approximately 500 square feet of efficient living space, with optional covered patio extensions

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Bedroom

Bathroom

500

Square Feet

Plans are Free to Download

Designed by Sierra James Construction

A compact, single-level one-bedroom, one-bath home offering approximately 500 square feet of efficient living space, with optional covered patio extensions that enhance indoor-outdoor connection. Thoughtfully designed to be both practical and cost-conscious, this plan delivers an approachable, affordable housing solution without sacrificing comfort or style.

Designed for the City of Bend by Sierra James Construction's on-staff architect, Ian Burgess, the Modern Mill House is eligible as a second ADU under Bend's current regulations. Its slender footprint is intentionally designed to fit lots with tighter setbacks or limited buildable width. The efficient layout supports streamlined circulation and flexible use, making it a strong fit for infill properties, alley-loaded lots, or sites with spatial constraints. The plan can be mirrored and adjusted to respond to varying lot configurations, access points, and solar orientation.

Architecturally, the Modern Mill House draws from contemporary interpretations of traditional mill-style structures, featuring a clean shed roof form, refined detailing, and a balanced mix of materials. The result is a modern, approachable design that integrates comfortably into Central Oregon neighborhoods while delivering durability, efficiency, and long-term livability.

The City of Bend's pre-approved plans are available to download free of charge through the City's Pre-Approved Plans Program.

Contact ADU Plan Designer

If you're interested in having Sierra James Construction build this design, call (541) 306-3775. Our experienced team can answer your questions, provide site-specific guidance, and help guide you through the permitting and construction process.

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Disclaimer:

These plans are provided as a courtesy by the Bend Chamber for application and permitting purposes only. These plans were not designed by the Bend Chamber and the Chamber bears no responsibility for the plans or resulting structure. The plans have been reviewed for minimum Oregon Residential Specialty Code compliance by the City of Bend. By using these standard plans, the user agrees to release the Bend Chamber from any and all claims, liabilities, suits, and demands on account of any injury, damage, or loss to persons or property, including injury or death, or economic losses, arising out of the use of these construction documents. The use of these plans does not eliminate or reduce the user’s responsibility to verify any and all information. These approved plans and any resulting permit issued shall not be construed to be a permit for, or an approval of, any violation of the provisions in the Oregon Residential Specialty Code or any other laws or ordinances of this jurisdiction. The approval of these plans and issuance of a permit based on construction documents and other data shall not prevent the building official from requiring the correction of errors in the construction documents and data. All applicable review and permitting fees still apply and use of these plans does not exempt applicants from any and all required fees or cost in the permitting process and further documentation requirements.

Pre-Approved ADU Design Library

Modern Mill House

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Designed by Sierra James Construction

Contact ADU Plan Designer

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