Massachusetts' New ADU Regulations: Prefab ADU Kits That Fit
Massachusetts' recent updates to Accessory Dwelling Unit (ADU) regulations have made it easier than ever for homeowners to build secondary housing on their properties. With the passage of the Affordable Homes Act, property owners in single-family zoning districts can now build ADUs up to 900 square feet by-right, eliminating the need for costly and time-consuming special permits. This new legislation is designed to increase housing options and affordability while supporting more sustainable and efficient development.
At New Frameworks, we’re excited to see these changes, as they align perfectly with our company’s 20-year old mission and new(ish) line of prefabricated ADU kits, ranging in size from 300SF-1200SF, which are designed for high performance, sustainable living. Whether you're looking to add a rental unit, backyard cottage, granny pod, multi-generational living space, or expand your property’s value, our prefabricated ADU kits meet the new ADU standards while prioritizing cost-effectiveness, carbon impact, and health.
In addition to our Cabañita 300, Agua 400, Terra 600, and Árbol 1200 units, the Flora 900 model ADU kit is perfect for Massachusetts’ new ADU rules, and here’s why:
The Flora 900 ADU kit was designed specifically for efficient, durable, and resilient living while staying within the 900-square-foot maximum required by Massachusetts’ new zoning allowances.
The Flora 900 prefabricated ADU kit includes:
900 square feet of conditioned living space
A first-floor bedroom for accessibility
An open-concept living and dining area
A loft space for a second bedroom or home office
High-performance, moisture-, fire-, and pest-resistant materials
By choosing our Flora ADU kit, homeowners can bypass lengthy permitting processes and take advantage of faster, more cost-effective construction with a sustainable, high-performance design.
Cost-Effective: High-Performance at a Lower Price
One of the biggest barriers to building a high-performance home is cost. In the Northeast, the average cost of high-performance construction ranges from $550 to $650 per square foot. However, our Flora 900 prefabricated ADU kit is designed to be significantly more cost-effective, with finishing costs typically priced between $350 and $500 per square foot, and the kit itself coming in at just $150 per square foot.
This pricing makes our ADU kit an accessible option for homeowners who want a sustainable, high-performance home without the premium cost of custom-built construction.
By choosing a prefabricated ADU kit, you benefit from:
Lower material and labor costs due to an efficient, modular building approach
Faster construction times, reducing financing and rental costs during the build
Energy-efficient, electric design, keeping long-term utility expenses low and eliminating the use of fossil fuels
With the Flora 900 ADU kit, you get a top-tier, high-performance home at a fraction of the cost of conventional construction—without sacrificing quality, durability, or sustainability.
Time Savings: Faster Construction, Immediate Availability
One of the biggest advantages of choosing a prefabricated ADU kit is how much time you save compared to traditional construction. Instead of waiting months or even years for a fully custom home, our Flora 900 ADU kit is designed for efficient, streamlined assembly and rapid delivery.
Skip the long wait times—we have immediate availability to start fabrication, which means your structure can be fabricated, shipped and assembled on site in as little as 6 weeks.
Pre-designed, prefabricated components mean a faster, more predictable build.
Minimal on-site construction delays since our ADU kits arrive ready for assembly.
We have a nationwide network of manufacturers ready to assemble and ship your ADU kit so you can start your build as early as this spring in Massachusetts. Whether you're working with your own builder or want guidance on installation, we ensure a smooth, timely process so you can move in sooner and start enjoying your new space faster.
Carbon Impact: A Sustainable Housing Choice
At New Frameworks, we specialize in carbon-negative, high-performance construction, and the Flora 900 ADU kit is no exception. This prefabricated ADU kit is built using healthy, natural, and local materials that significantly reduce the carbon footprint compared to conventional building methods.
Key sustainability benefits of our ADU kit:
Natural, non-toxic materials that are healthier for occupants and the environment
Energy-efficient envelope for reduced heating and cooling costs
Carbon-sequestering materials that actively reduce emissions
By choosing a prefabricated ADU kit with sustainable materials, homeowners can lower their environmental impact without compromising on comfort or durability.
Health: A Safe and Resilient Home for Generations
One of the biggest benefits of the Flora 900 ADU kit is its focus on healthy, non-toxic materials and indoor air quality. Unlike conventional ADUs that rely on synthetic materials, our prefabricated ADU kit is designed with natural materials to promote a clean, safe, and comfortable living environment. The adu kit includes:
Compressed Straw insulation in our structural wall panels, which doesn’t contain common irritants, allergens or toxins found in conventional construction materials
A Vapor-Open, Air-tight system that offers superior moisture control to prevent mold and air quality issues
Naturally fire-, pest-, and rot-resistant materials for long-term durability and resilience
By investing in a natural, high-performance ADU kit, homeowners can ensure that their space is not just beautiful and functional—but also a healthy place to live for decades to come.
Build Smarter with a Flora 900 Prefabricated ADU Kit
The new Massachusetts ADU regulations open up exciting possibilities for homeowners looking to expand their living space. With the Flora 900 ADU kit, you get a sustainable, cost-effective, and resilient home that meets all state requirements while providing long-term financial and environmental benefits.
Schedule your ADU construction for this spring! We have a network of manufacturers across the U.S. ready to assemble and ship your ADU kit—don’t miss your opportunity to take advantage of Massachusetts’ updated zoning laws and invest in a prefabricated ADU kit that will serve you well for years to come.
Ready to get started? Contact us today to secure your spot!
