Build Faster. Inspect Once, Appraise Like a Real Home!
Pre-Engineered ADU Benefits
Build Faster. Reduce Risk. Deliver with Confidence.
A pre-engineered ADU eliminates the uncertainty, delays, and inefficiencies of traditional site-built construction. Instead of designing and coordinating every structural element in the field, all major components are engineered, standardized, and approved in advance—allowing projects to move faster and with far greater predictability.
With a pre-engineered system, the most complex structural phase is no longer built piece by piece on site. Framing, shear walls, structural connections, and key assemblies are resolved upfront, dramatically reducing field labor, inspection cycles, and rework. This results in shorter construction timelines, fewer trade conflicts, and smoother inspections.
For builders and developers, pre-engineering means consistent outcomes across multiple projects. Costs are easier to forecast, schedules are easier to manage, and labor dependence is significantly reduced. For homeowners, it means a faster path to occupancy, earlier rental income, and a finished ADU that meets modern code and performance standards.
When combined with an ICC-compliant system, a pre-engineered ADU is treated as a real, permanent home—fully appraisable and financeable—while still delivering the speed advantages typically associated with modular construction, without its transportation and site limitations.
The result: faster builds, lower risk, predictable delivery, and higher return on investment.
600 SF · 2 Bedroom · 1 Bathroom ADU
Compact. Efficient. Built to Live Like a Real Home.
This 600 square foot, 2-bedroom, 1-bath ADU is designed to maximize livability within a compact footprint—without sacrificing comfort, storage, or long-term value. The open-concept living, dining, and kitchen area creates a bright, functional core that feels significantly larger than its size, making it ideal for rental income, multigenerational living, or workforce housing.
Both bedrooms are thoughtfully laid out to accommodate full-size beds and functional storage, with walk-in closet solutions that enhance everyday usability—something rarely achieved in traditional small ADU layouts. The centrally located bathroom is efficiently designed for daily use, while maintaining a clean, modern aesthetic that appeals to long-term tenants and homeowners alike.
The kitchen features a full appliance layout with ample counter space and storage, designed to function like a primary residence rather than a temporary unit. Natural light, modern finishes, and efficient circulation give the home a balanced, comfortable feel suitable for long-term occupancy.
Built using the BlockBuild System, this ADU benefits from a fully pre-engineered structural system that allows the most complex phase of construction to be installed and inspected in days—not months. The result is a faster project timeline, lower labor exposure, and earlier rental income—without changing how the home is appraised or financed.
Key Advantages
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Ideal for rental, family use, or investment properties
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Feels like a full home—not a studio or temporary unit
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ICC-compliant, site-built classification (not modular or mobile)
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Faster completion = faster occupancy and return on investment
This 600 SF ADU proves that smaller homes don’t need to feel small—and that smart systems can deliver speed, quality, and real long-term value.
800 SF TYPE A · 2 Bed · 2 Bath A.D.U.
Efficient Living. Maximum Flexibility. Built to Perform.
This 800 square foot, 2-bedroom, 2-bath ADU is designed to deliver an ideal balance of comfort, privacy, and construction efficiency—making it one of the most versatile layouts in the BlockBuild Systems lineup.
The plan features a split-bedroom configuration, with each bedroom paired to its own full bathroom. This layout is ideal for long-term rental, multi-generational living, or shared occupancy, offering privacy comparable to much larger homes. The centrally located open-concept living, dining, and kitchen area creates a bright, spacious feel while maintaining a compact footprint.
From a construction standpoint, this model is optimized for speed and predictability. The entire structural system is pre-engineered and systemized, allowing the most complex phase of construction to be completed and inspected in a fraction of the time required by traditional stick-build methods. Interior finishes and layouts remain flexible, enabling customization without impacting the core build schedule.
For owners and developers, faster completion means earlier rental income, reduced carrying costs, and quicker return on investment. For builders, the system reduces coordination challenges, repeat inspections, and labor inefficiencies—without increasing overall construction cost.
Same cost. Faster delivery. Stronger returns.
This 800 SF model proves that smart systems—not more square footage—create real value.
800 SF TYPE A · 2 Bed · 2 Bath A.D.U.
Efficient Living. Maximum Flexibility. Built to Perform.
This 800 square foot, 2-bedroom, 2-bath ADU is designed to deliver an ideal balance of comfort, privacy, and construction efficiency—making it one of the most versatile layouts in the BlockBuild Systems lineup.
The plan features a split-bedroom configuration, with each bedroom paired to its own full bathroom. This layout is ideal for long-term rental, multi-generational living, or shared occupancy, offering privacy comparable to much larger homes. The centrally located open-concept living, dining, and kitchen area creates a bright, spacious feel while maintaining a compact footprint.
From a construction standpoint, this model is optimized for speed and predictability. The entire structural system is pre-engineered and systemized, allowing the most complex phase of construction to be completed and inspected in a fraction of the time required by traditional stick-build methods. Interior finishes and layouts remain flexible, enabling customization without impacting the core build schedule.
For owners and developers, faster completion means earlier rental income, reduced carrying costs, and quicker return on investment. For builders, the system reduces coordination challenges, repeat inspections, and labor inefficiencies—without increasing overall construction cost.
Same cost. Faster delivery. Stronger returns.
This 800 SF model proves that smart systems—not more square footage—create real value.
1000 SF ·TYPE A
3 Bedroom · 2 Bathroom ADU
Balanced Family Living. Built Faster. Ready to Rent.
This 1,000 square foot, 3-bedroom, 2-bathroom ADU is designed to deliver the ideal balance between livability, efficiency, and long-term rental value. The layout maximizes usable space while maintaining privacy between bedrooms and shared living areas, making it suitable for families, multi-tenant rentals, or long-term occupants.
The open-concept kitchen and living room form the heart of the home, creating a comfortable central space for daily living without wasting square footage. Bedrooms are strategically positioned to reduce noise transfer and improve privacy, while two full bathrooms enhance functionality and rental flexibility.
Built using the BlockBuild System, the most time-consuming structural phase is completed rapidly and efficiently, allowing the project to move from foundation to inspection approval in a fraction of the time required by traditional construction. This faster build timeline means earlier completion, earlier occupancy, and faster return on investment.
Ideal for homeowners adding rental income, developers seeking scalable ADU solutions, and builders focused on predictable schedules and reduced labor complexity.
Same cost. Faster delivery. Stronger rental performance.
1000 SF · 3 Bedroom · 2 Bathroom ADU
Balanced Family Living. Built Faster. Ready to Rent.
This 1,000 square foot, 3-bedroom, 2-bathroom ADU is designed to deliver the ideal balance between livability, efficiency, and long-term rental value. The layout maximizes usable space while maintaining privacy between bedrooms and shared living areas, making it suitable for families, multi-tenant rentals, or long-term occupants.
The open-concept kitchen and living room form the heart of the home, creating a comfortable central space for daily living without wasting square footage. Bedrooms are strategically positioned to reduce noise transfer and improve privacy, while two full bathrooms enhance functionality and rental flexibility.
Built using the BlockBuild System, the most time-consuming structural phase is completed rapidly and efficiently, allowing the project to move from foundation to inspection approval in a fraction of the time required by traditional construction. This faster build timeline means earlier completion, earlier occupancy, and faster return on investment.
Ideal for homeowners adding rental income, developers seeking scalable ADU solutions, and builders focused on predictable schedules and reduced labor complexity.
Same cost. Faster delivery. Stronger rental performance.
1200 SF · 3 Bedroom · 2 Bathroom ADU
Maximum Livability. Smart Efficiency. Full-Size Comfort.
This 1,200 square foot, 3-bedroom, 2-bath ADU is designed to deliver the feel and functionality of a full-size single-family home—within a compact, highly efficient footprint. The open-concept living, dining, and kitchen area creates a bright, central gathering space, while three well-proportioned bedrooms provide flexibility for families, multigenerational living, or rental use.
The layout prioritizes privacy and flow, with bedrooms strategically separated from the main living area and ample closet storage throughout. Two full bathrooms support comfortable daily living and increase long-term rental appeal. A dedicated kitchen with full-size appliances anchors the home, making it ideal for long-term tenants or extended family occupancy.
Built using the BlockBuild System, this ADU benefits from a pre-engineered, ICC-certified structural system that allows the most complex phase of construction to be assembled and inspected in days—not months. The result is faster completion, reduced labor dependency, and earlier rental income—without sacrificing appraisal value or financing eligibility.
Ideal for: homeowners seeking maximum rental return, developers targeting repeatable ADU projects, and builders who want speed, predictability, and scalability—without compromising quality.
1200 SF · 4 Bedroom · 2 Bathroom ADU
High-Density Living. Maximum Rental Performance.
This 1,200 square foot, 4-bedroom, 2-bath ADU is engineered for maximum occupancy and rental efficiency without sacrificing livability. The thoughtfully planned layout balances private sleeping areas with a centrally located living, dining, and kitchen core—creating a functional, shared space that supports family living, multigenerational households, or high-yield rental use.
Four equally sized bedrooms provide flexibility for larger families, co-living arrangements, or student and workforce housing, while two full bathrooms reduce congestion and improve daily usability. The open kitchen connects seamlessly to the dining area, allowing efficient circulation and natural gathering flow. Dedicated storage, in-unit laundry, and full-size appliances make this ADU suitable for long-term tenancy.
Built with the BlockBuild System, this model leverages an ICC-certified, pre-engineered structural platform that compresses the most complex phase of construction into days instead of months. Faster inspections, reduced labor dependency, and predictable timelines translate directly into earlier occupancy and faster return on investment—while maintaining full appraisal value equivalent to traditional site-built homes.
Ideal for: developers targeting high-density ADU projects, homeowners maximizing rental income, and builders seeking scalable, repeatable housing solutions with reduced construction risk.