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(413)-218-1102

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3dhimprovement@gmail.com

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Mon - Fri 08:00 - 20:00 / Closed on Weekends

Western MA & CT Builders
Serving Agawam, Longmeadow & Beyond

Custom ADUs &
Home Additions.

Expert design-build service for in-law suites, garage conversions, and home extensions. We build independence for aging parents and value for your future.
Start Your Project
Start Your Project
View Our Work
View Our Work

Why Invest in an Accessory Dwelling Unit?

Whether you call it a granny flat, guest house, or in-law suite, an ADU is a lifestyle solution that adds significant value.

In-Law Suites for Aging Parents

Keep your loved ones close and safe while maintaining their independence. Our accessible ADU designs are the perfect alternative to assisted living facilities.

Housing for Young Adults

Give your children a stepping stone into independence. A backyard cottage provides affordable housing in a tough real estate market.

Rental Income & ROI

Turn your backyard into a passive income generator. ADU rentals in MA & CT are in high demand for long-term tenants.

Lifestyle & Property Value

Home office, art studio, pool house, or simply more room to breathe. Legally permitted additions increase your property’s resale value significantly.
Our Workflow

Our Design-Build
Process.

We manage the entire project lifecycle-from zoning feasibility to final inspection-so you can enjoy the transformation.

Start Your Consultation
01

Discovery & Feasibility

We assess your property’s zoning regulations, setbacks, and utility connections to confirm feasibility and ensure compliance with local requirements.

02

Architectural Design

Our architects create a custom floor plan that maximizes usable space while aligning with your vision and local building codes.

03

Permitting Management

We prepare and submit all required documentation to the city and coordinate approvals—handling the paperwork so you don’t have to.

04

Construction & Project Management

Our experienced builders and project managers execute the construction efficiently, keeping the site clean, organized, and minimally disruptive.

05

Final Walkthrough

We conduct a detailed walkthrough and hand over the keys only when every detail meets our quality standards and your expectations.

100% Custom Capability
We specialize in custom designs. The models below are just starting points. Most of our clients work with us to create a completely unique plan tailored to their specific property and family needs.
Start a Custom Design

Popular Floor Plans

Explore our curated ADU models. Use then as a starting point, then we customize the design to fit your property and lifestyle.
View All Designs
  • 650 SQ FT
  • 1 Bed
  • 1 Bath
Luxury Guest Suite

The Modern Minimalist

Our innovative prefab solution is a flat-packed, panelized kits of parts with hundreds of customizations in the Design Center.
View Full Details & Gallery
  • 650 SQ FT
  • 1 Bed
  • 1 Bath
Luxury Guest Suite

The Heritage Cottage

Whether you need a home office, storage space, guest studio, or backyard retreat, we've got the perfect 3D Home Improvements for your needs.
View Full Details & Gallery
  • 650 SQ FT
  • 1 Bed
  • 1 Bath
Luxury Guest Suite

The Studio Loft

Expert design-build service for in-law suites, garage conversions, and home extensions. We build independence for aging parents and value for your future.
View Full Details & Gallery

Common Questions.

Building an addition is a significant investment. Here are answers to the most commonquestions about building ADUs in Western MA.
“3D Home Improvements made the permitting process in Longmeadow so easy. We didn't have to worry about a thing.”
Sarah Jenkins
Longmeadow, MA
Is my property eligible for an ADU in Western MA?

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How much does it cost to build an ADU?

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Can I rent out my Accessory Dwelling Unit?

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Do you handle architectural drawings and permits?

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Ready to expand your home?

Schedule your free site consultation with Western MA's trusted ADU specialists.
Schedule Free Consultation