The builder pulls up a home plan on his laptop. He needs to adapt it for a narrow lot. In the traditional process, this means calling the designer, explaining the constraints, waiting days or weeks for revisions, paying modification fees, and hoping the changes work.
In Thomas Retnauer’s vision, AI and BIM automation allow builders to input lot dimensions and instantly generate an adjusted plan. Costs and material quantities update automatically, and the 3D model refreshes in real time—turning weeks of manual work into a process measured in minutes.
That future isn’t theoretical. It’s coming soon.
As Chief Visionary of RBA Home Plans, Retnauer is building the industry’s most advanced architect-led plan ecosystem, powered by AI, BIM, and automated design tools that most competitors don’t even understand yet.
“The future of home design is interactive, adaptable, and digital, And we intend to lead that shift.”
-Thomas Retnauer
RBA didn’t stumble into technological leadership by accident. The firm made deliberate early investments in BIM-based design, TestFit, and AI visualization while competitors were still drawing in AutoCAD. Those investments required training, experimentation, and cultural change across the organization.
“As early adopters of BIM-based design, TestFit, and AI visualization, RBA faced the challenge of reinventing processes while still delivering projects on tight schedules,” Retnauer explains. “Each step required training, experimentation, and cultural change, but it pushed RBA ahead of many firms.”
But the real transformation comes from applying those tools to ready-to-build home plans at scale.
Traditional home plan libraries are static. You buy a plan and receive PDF files showing what the designer drew months or years ago. Any changes require manual revision by someone who may or may not still be available. Cost estimates are generic at best. Material quantities are approximate. 3D visualization requires additional software and expertise.
RBA Home Plans is building something fundamentally different. Plans that exist as intelligent data models, not just drawings. Systems that understand relationships between design elements, material costs, and construction methods. Interfaces that allow personalization within parameters that maintain structural integrity and buildability.
“We’re building a future where plans adjust automatically to lot conditions, builders receive instant updates, floor plans can be previewed in 3D in seconds, homeowners can personalize layouts through guided AI, and renderings, elevations, and options update instantly,”
-Thomas Retnauer
This level of sophistication requires more than just buying software. It demands understanding how design decisions cascade through the entire construction process. What happens to costs when you increase window sizes. How floor plan changes affect framing requirements. Which modifications maintain architectural integrity versus compromising the design.
That knowledge comes from RBA’s 30 years of architectural practice. The firm has designed thousands of homes across the Mid-Atlantic, from coastal residences to community master plans. They’ve worked with builders on multifamily developments, high-end custom homes, and production housing. They understand construction from both design and execution perspectives.
“Every plan in our library represents real-world experience,” Retnauer notes.
“Plans built, refined, value-engineered, and lived in. This isn’t theoretical design. It’s proven design backed by an architectural firm still working at the forefront of residential development.”
Combining that practical experience with advanced technology creates competitive advantages that traditional plan services can’t replicate. RBA knows which design modifications work in the field because they’ve built thousands of homes. Their AI tools incorporate that knowledge, guiding users toward changes that maintain quality while meeting specific needs.
The technology also solves one of the home plan industry’s biggest challenges: transforming hundreds of past projects into a streamlined, searchable, builder-ready digital platform. RBA invested enormous effort scanning, updating, organizing, categorizing, and refining decades of work.
“Transforming hundreds of past projects into a streamlined, searchable, SEO-friendly, builder-ready digital platform was a massive lift,” Retnauer reflects. “Scanning, updating, organizing, categorizing, and refining dozens of designs took time, vision, and persistence.”
But that investment created a foundation for what comes next. Every plan in the library now exists as structured data that can be manipulated, analyzed, and personalized through automated tools. The hard work of digitization unlocks capabilities that static PDF libraries will never achieve.
The business implications extend beyond just selling more plans. RBA’s technology infrastructure enables new service models. Builders could license access to the library with unlimited modifications. Developers could use automated tools to test multiple design options during land planning. Homeowners could collaborate with builders to customize plans through guided interfaces that prevent problematic changes.
Each possibility represents revenue that traditional plan services can’t capture because they lack the technical foundation.
Retnauer’s vision includes expanding RBA’s offerings with new collections reflecting evolving lifestyle trends: compact and efficient homes, aging-in-place designs, infill and narrow-lot solutions, high-performance homes, coastal resilience series, modern family living, and builder-focused prototypes.
“Each new collection will be rooted in real-world livability, not trends,” Retnauer emphasizes.
But even the best new designs will leverage the same technological infrastructure that makes RBA’s existing library increasingly intelligent and adaptable.
The architecture industry talks endlessly about technology adoption. BIM. AI. Automation. Digital workflows. Most firms implement these tools incrementally, applying them to individual projects without rethinking entire business models.
RBA Home Plans is taking a different approach. Rather than just using technology to work faster, they’re using it to create entirely new capabilities that transform what’s possible in ready-to-build home plans.
For builders frustrated with static plans that don’t adapt to real-world constraints, this represents a fundamental shift. For homeowners wanting personalization without custom architecture costs, it offers new possibilities. For the home plan industry watching RBA build technological capabilities competitors can’t match, it should feel unsettling.
The future of home design is interactive, adaptable, and digital. Thomas Retnauer isn’t waiting for that future to arrive. He’s building it while competitors are still drawing in CAD.
