Duplex packages
Two-unit buildings can start with a shared envelope and a clear plan for entries, separations, and mechanical coordination. Confirm what the material package includes for each unit.
Homes & Buildings / Multi-family
SIP and EPS packages for duplexes and small multi-family buildings. Start with the unit count, layout, and the assembly that belongs in the quote.

EPS Building Systems
Manufacturer expertise. Personal package guidance from Big Twig.
More than one dwelling
A two-unit duplex and a small apartment building both need a coordinated envelope, openings, and delivery plan. Big Twig helps you compare EPS SIP and component options for the project you are actually designing—not a one-size kit.
We work with buyers in North Carolina, South Carolina, Tennessee, and Georgia from Hendersonville, NC, by appointment Monday–Friday 10am–6pm.
How these packages are used
Two-unit buildings can start with a shared envelope and a clear plan for entries, separations, and mechanical coordination. Confirm what the material package includes for each unit.
A handful of units, a small apartment building, or a similar project needs layout, occupancy, and delivery planning before panels or components are quoted.
Some multi-family projects use structural insulated panels. Others use EPS wall-panel and truss components. The quoted system follows the building, not a generic label.
Workforce housing, rental duplexes, and similar uses still require project-specific engineering, fire and egress coordination by your professionals, and a written material scope.
Multi-family inspiration
Photographs from the EPS multi-family collection. Confirm unit count, assembly, and the quoted package; pictured construction and finishes are manufacturer inspiration.





Know what you’re buying
Material packages, design assistance, technical support, and delivery coordination. Your written quote defines the materials, design fees, engineering, and delivery scope for your project.
On-Time Package Delivery
Construction and its schedule, including site work, foundation, assembly, trade coordination, and completion. Review labor, permits, mechanical systems, and finishes separately from the material-package quote.
FAQ
Big Twig helps define EPS material packages for duplexes and multi-family buildings. Some projects use SIP assemblies; others use EPS components such as wall panels and trusses. The quote identifies the system for your building.
Yes. Share the unit count, layout ideas, and site location. A duplex is still a custom package: geometry, openings, separations, and delivery all affect the materials. Big Twig does not publish a universal duplex price.
Customers select and hire their own builder. Your builder and project professionals manage construction, inspections, fire and egress requirements, and the completion schedule. Big Twig coordinates the agreed material package.
Big Twig is based in Hendersonville, NC, by appointment Monday–Friday 10am–6pm, and works with buyers in North Carolina, South Carolina, Tennessee, and Georgia. Call (833) 244-8944 to discuss a multi-family package.
A single-family SIP home and a multi-family building can use different layouts, structural approaches, and component sets. Explore SIP Homes for a residence, or this page when you are planning more than one dwelling unit.
A clear next step
Tell us about your site, your ideas, and where you are in the process. We’ll help you understand the package, design scope, and delivery. Your builder manages construction.