RG ProBuilders
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RG ProBuilders has spent the last 15 years specializing in accessory dwelling units across a wide service territory spanning Washington and Oregon. Unlike builders who have drifted into ADUs or treat them as occasional remodeling projects, this firm has made ADU design and construction its central focus, allowing the team to develop deep expertise in the zoning, permitting, construction challenges, and market demands unique to ADU work. The company is headquartered in Battle Ground, Washington, and maintains an active presence in communities throughout Clark County, Multnomah County, and surrounding areas, serving homeowners from Longview to Lake Oswego.
The foundation of RG ProBuilders' approach is a set of three design series, each distinct in character and suited to different preferences and site constraints. The Traditional Series features pitched roofs and front porches, drawing on the language of classic cottage and farmhouse design. These designs have a timeless quality and often appeal to homeowners who want the ADU to feel like a real home rather than a modern box. The Modern Series offers flat roofs, expansive windows, and contemporary interiors with clean lines and efficient floor plans. This series suits design-forward homeowners and properties where a contemporary aesthetic complements the neighborhood context. The Urban Series is purpose-built for narrow or tightly constrained lots, with a footprint optimized for efficiency and setback compliance in dense neighborhoods. These designs recognize that not every lot is a sprawling suburban acre, and some of the firm's work addresses urban infill and creative constraints.
Within each design series, the models span a considerable range of size and complexity. The smallest options begin around 357 square feet and scale up to more than 1500 square feet, accommodating everything from a small studio for a guest cottage to a full two-bedroom, two-bath unit suitable for a multi-generational household or rental income. This size range means a homeowner with a modest lot and a budget-conscious timeline can find a smaller option, while another with more space and means can invest in a larger, more equipped unit. The ability to select from these predefined series significantly shortens the design process compared to starting from scratch, allowing homeowners to move toward permitting and construction sooner.
RG ProBuilders emphasizes the personal touch and works closely with each homeowner to customize the models to fit the specific property, local setback requirements, and individual preferences. The three design series provide a starting point, but the firm's core approach is to adapt each design to reflect the unique context of the site and the homeowner's needs. This might mean adjusting rooflines to match the primary residence, modifying the exterior finish to complement existing landscaping, or adapting the interior layout to accommodate unique site conditions or the homeowner's particular program. The customization process ensures that the final ADU feels site-specific rather than dropped in place generically.
A significant responsibility that many homeowners overlook is the coordination of permits and utilities. RG ProBuilders assumes this burden as part of their service, handling the documentation required by each municipality, coordinating with local permitting departments, and managing the logistics of connecting water, sewer, and electrical service. This is not a glamorous part of the work, but it is time-consuming and can derail a project if it is mishandled. Homeowners who choose RG ProBuilders avoid the frustration of learning zoning codes, assembling permit packets, and negotiating with utilities; the builder manages these details, allowing the homeowner to focus on design choices and financing.
Pricing for an ADU through RG ProBuilders reflects the site-built, fully customized nature of the work and the regional market. The firm reports that ADU construction in their service areas typically costs between $100,000 and $300,000 for a turnkey project, with per-square-foot costs running roughly $250 to $450 depending on finishes, site conditions, and the extent of customization. A smaller Traditional Series cottage at 400 to 600 square feet would land on the lower end of this range, while a larger Modern Series unit with premium finishes would sit on the higher end. These are not fixed prices but illustrative bands; homeowners receive a detailed estimate after the site visit and design consultation.
Beyond ADUs, RG ProBuilders also undertakes custom homes, which the company markets as "Premier Homes," as well as barns, shops, garages, additions, and complete remodels for both residential and commercial properties. This broader portfolio of work provides the firm with a deep skill set in custom construction and site-specific building, which translates directly to the sophistication with which they approach ADU work. A firm that only builds ADUs might lack experience in certain structural or finish challenges; a firm that has built all manner of custom structures brings problem-solving skills and quality standards across the board.
The company operates across a substantial geographic footprint. In Washington, they serve Vancouver, Battle Ground, Clark County, Washougal, Camas, Woodland, Ridgefield, Longview, and Kalama, covering the area north and east of Portland. In Oregon, their work extends to Portland, Beaverton, Hillsboro, Lake Oswego, West Linn, Wilsonville, Tualatin, and the surrounding counties of Clackamas and Multnomah. This dual-state reach means a homeowner on either side of the Washington-Oregon border can work with RG ProBuilders, and the firm understands the different permit requirements, zoning allowances, and local building standards in each jurisdiction.
Communication and accessibility are built into the RG ProBuilders model. The firm encourages homeowners to call directly at 360-723-0858 to discuss a project, and the Battle Ground headquarters location provides a physical place to visit and meet with the team. The company also maintains an informative website with FAQ, cost guides, and portfolio examples, which helps educate homeowners about ADU possibilities before they commit to a conversation.
RG ProBuilders is an excellent fit for homeowners in the Portland or Vancouver area who want a purpose-built ADU from a firm that has focused on this work for 15 years. If you prefer choosing from established design series rather than starting entirely from scratch, and you prefer working with a builder that can handle all the permitting and utility logistics, RG ProBuilders delivers a complete design-build experience with clear pricing guidance and the institutional knowledge that comes from deep specialization.