Keep Family Close While Preserving Independence
Multigenerational Attached ADU's
Build Smart - Build Local Build an Attached ADU for Your Loved Ones—Right Where They Belong
AAA Home Improvements designs and builds high-end multigenerational attached ADUs in Denver and across the Front Range, offering families a practical, private, and beautiful way to stay connected without compromising space or privacy.
What Is a Multigenerational Attached ADU—and Why Are So Many Denver Families Building Them?
What Is a Attached ADU?
A multigenerational attached ADU (Accessory Dwelling Unit) is a fully independent living space built as an extension of your existing home. Unlike detached backyard units, attached ADUs share at least one wall with the primary residence—but are completely self-contained, often including a private entrance, kitchen, bathroom, bedroom, and living area.
In the Denver Metro area, these have become the go-to solution for families who want to:
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Care for aging parents without placing them in senior housing
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Give adult children a place to live while they gain financial independence
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Provide private space for live-in nannies, caregivers, or extended family
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Add long-term value to the property while creating more livable square footage
In today’s world, housing flexibility and family care aren’t luxuries—they’re necessities. Our clients often tell us:
“We don’t want to send mom to a retirement home.”
“Our college graduate moved back in, and we need more space.”
“I want my family close—but not on top of each other.”
If any of that sounds familiar, you’re not alone—and we’ve built ADUs for families just like yours.
Your Next Step Isn’t a Quote — It’s a Conversation
We’re not a one-call-close contractor. We’re a high-touch design-build partner for homeowners who want the job done right — not done twice.
Rental Income – Detached ADUs make excellent rental units, both for long-term tenants and short-term Airbnb guests. Their separation from the main home makes them more desirable and allows for premium rents.
Multigenerational Living – Many families use detached ADUs to house elderly parents, adult children, or live-in caregivers, while preserving independence and privacy.
Future-Proofing Your Home – As your needs change over time, your ADU can become a rental, office, studio, or even your own downsized home in retirement.
Guest Suites – Hosting guests? A detached ADU gives them their own space without disrupting your household.
Future Retirement Unit – Downsize while renting the main home later in life
Zoning & Lot Requirements
Before building a detached ADU, it’s important to understand what’s allowed based on your location.
Many municipalities allow detached ADUs in single-family residential zones
Cities like Denver, Arvada, Lakewood, and Golden have adopted ADU-friendly zoning overlays
Detached ADUs typically require separate utility connections, foundation permits, and access paths
Setback requirements, maximum square footage, and height limits vary by city and lot size
During your Discovery Call, we’ll look up your zoning and setbacks to confirm what’s possible on your lot.
Zoning & Lot Requirements
Before building an attached ADU, it’s important to understand what’s allowed based on your location.
Many municipalities allow detached ADUs in single-family residential zones
Cities like Denver, Arvada, Lakewood, and Golden have adopted ADU-friendly zoning overlays
Setback requirements, maximum square footage, and height limits vary by city and lot size
During your Discovery Call, we’ll look up your zoning and setbacks to confirm what’s possible on your lot.
Let’s Talk About What’s Possible for Your Property
Every ADU starts with one conversation. We’ll help you understand what’s allowed, what’s possible, and what your next steps should be. There’s no obligation—just expert advice tailored to your situation.
Types of Attached Multigenerational ADUs We Build
Detached ADUs
Our Detached ADUs Typically Include:
Over-Garage Suites
Great for properties with alley access or raised garages. These units often include full kitchens, bathrooms, and even balconies—perfect for young couples or aging parents.
Basement Conversions
A cost-effective way to repurpose space you already own. We’ll insulate, waterproof, and finish the space to code, adding a private entrance where zoning allows.
Side or Rear Additions
These are built as a horizontal extension to your home—ideal for wider lots. We handle all permitting, design, and construction to ensure a seamless integration.
Main-Level Wings for Accessibility
For families caring for elderly parents or individuals with mobility concerns, a main-floor attached ADU ensures comfort and ADA accessibility without the need for stairs.
Let’s Talk About What’s Possible for Your Property
Every ADU starts with one conversation. We’ll help you understand what’s allowed, what’s possible, and what your next steps should be. There’s no obligation—just expert advice tailored to your situation.
Why Families Trust AAA Home Improvements
With more than two decades of remodeling and residential construction experience across Denver, we’ve seen firsthand how families are evolving—and how homes need to evolve with them.
Here's what sets us apart:
Design-Build Expertise
From 3D renderings to architectural design, we handle everything under one roof—saving you time, money, and stress.
Code & Zoning Expertise
Attached ADUs must meet strict Denver zoning requirements, and every city has its own quirks. We take care of the paperwork, permitting, and approvals so you don’t have to.
Custom Solutions for Complex Families
Whether you're planning for future aging-in-place needs or navigating complex household dynamics, we listen first—then build what works for you.
Transparent Budgeting & Fixed Pricing
No surprises. Our process includes detailed scope development, fixed-price contracts, and an emphasis on long-term ROI.
High-End Craftsmanship with Livability in Mind
We know this isn’t just an addition—it’s home. We blend style with durability, and every finish is chosen with daily living in mind.
Dedicated ADU Team
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Charles Ruppert – Your Discovery Call contact and project Estimator
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Luke – Handles engineering and permitting
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JT – Oversees construction and day-to-day jobsite management
Turn Key Service – Our 6-step system ensures clear communication from consultation to completion.
Process Steps
AAA Home Improvements – 6-Step Detached ADU Process
“From Concept to Completion: A Proven System for High-End Results”
Discovery Call
We start every project with a virtual consultation. During this video call, you’ll meet with Charles Ruppert, our Estimator, to discuss your vision, goals, timeline, and budget. We’ll gather essential details about your property and help you determine if your project is a good fit before ever stepping onsite.
Onsite Job Walk & Feasibility Review
Our team visits your property to evaluate zoning, setbacks, structural constraints, and overall feasibility. We’ll take measurements, photos, and assess the physical scope of work. This is where we ensure that what you want to build can actually be built — legally and structurally.
Outcome: Feasibility confirmed, potential constraints identified, zoning research initiated.
Conceptual Design & 3D Renderings
Using Chief Architect, our in-house team brings your vision to life with architectural drawings and 3D renderings. You’ll be able to walk through your future space virtually, make revisions, and ensure every detail fits your lifestyle before committing to construction.
Outcome: Visual plans completed, revisions finalized, client approval obtained.
Engineering & Permitting
Our project engineer, Luke, handles all necessary engineering and structural plans. We then submit them to the appropriate city or county building departments for permitting. You won’t have to worry about red tape — we manage the entire process on your behalf.
Outcome: Approved permit set, ready for scheduling construction.
Construction & Project Management
Led by our Construction Manager JT, your project moves into full production. We coordinate all subcontractors, inspections, and materials — while maintaining communication with you at every stage. Weekly updates ensure transparency and our high standards ensure lasting quality.
Outcome: Project built to plan, quality controlled, and updated throughout production.
Final Walkthrough & Completion
Once construction wraps up, we’ll schedule a final walkthrough to review every detail. Any punch list items are addressed promptly. We also provide guidance on maintenance and warranties so you feel confident about your investment.
Outcome: Project delivered, client satisfaction confirmed, warranty begins.
Testimonials
