What Is a Second Dwelling Unit?
A Second Dwelling Unit is an additional, separate place to live on your property. It’s like a second small house with its own kitchen, bathroom, and entrance.
Add a Private, Legal Living Space to Your Property
Thinking of adding a second living unit to your property? Whether you’re building a detached unit, converting a section of your home, or adding something new on top, a Second Dwelling Unit (SDU) gives you more space, more flexibility, and more value. Home Planning Hawaii connects Honolulu homeowners with experienced building designers who can help you create the perfect SDU—while staying within city rules and making smart use of your lot.
Types of SDUs in Honolulu:
- Detached ADUs: Built in the backyard or side yard
- Attached ADUs: Connected to the main house but with a private entrance
- Junior ADUs: Smaller units created within the existing home
Why Add a Second Dwelling Unit?
More Space for Family or Guests
A second unit gives you room for parents, adult children, or long-term visitors.
Rental Income Opportunity
You can rent out the second unit to help cover the mortgage or build long-term income.
Better Use of Your Lot
Instead of unused yard space, turn it into something that adds real value.
Values
How It Works
Share Your Plans and Goals
Use the Instant Online Estimator or contact form to tell us about your property and what kind of second unit you’re considering.
Get Connected With a Local Design Expert
Home Planning Hawaii matches you with a Honolulu building designer familiar with second unit laws and lot layouts.
Explore Layout Options
You’ll review detached, attached, or JADU concepts that fit your property and needs.
Finalize Plans and Get Ready to Build
Once the design is complete, your plans can be submitted for permits and used by your contractor.
What’s Included in SDU Design
- Custom layout based on your property size and shape
- Smart use of space for comfort and privacy
- Kitchen and bathroom plans
- Code-compliant design based on Honolulu zoning
- Detached, attached, or interior layout options
Who Should Consider This Service?
- Homeowners with extra land or side yards
- Families planning for multigenerational living
- Owners interested in legal rental income
Add Space, Income, and Flexibility to Your Honolulu Home
A Second Dwelling Unit can serve many purposes—and with smart design, it can blend beautifully into your property. Home Planning Hawaii is here to help you plan it right and get connected with the local pros who know how to make it happen. Use the Instant Online Estimator, fill out the contact form, or call today to start your second dwelling unit design in Honolulu. One property. Two homes. More possibilities
Second Dwelling Unit Design
Add a Private, Legal Living Space to Your Property
Thinking of adding a second living unit to your property? Whether you’re building a detached unit, converting a section of your home, or adding something new on top, a Second Dwelling Unit (SDU) gives you more space, more flexibility, and more value. Home Planning Hawaii connects Honolulu homeowners with experienced building designers who can help you create the perfect SDU—while staying within city rules and making smart use of your lot.
What Is a Second Dwelling Unit?
A Second Dwelling Unit is an additional, separate place to live on your property. It’s like a second small house with its own kitchen, bathroom, and entrance.
Types of SDUs in Honolulu:
- Detached ADUs: Built in the backyard or side yard
- Attached ADUs: Connected to the main house but with a private entrance
- Junior ADUs: Smaller units created within the existing home
Context-Aware Conversations
Thread is packed with powerful features designed to transform your sleep experience. From calming soundscapes to smart analytics.
The Chat That Gets You
Built with intention — no clutter, no chaos. Just a clean, distraction-free AI that helps you think, write, and solve.
.png)
Say More with Less Effort
From daily questions to deep ideas, our AI keeps up with your pace and tone — casual, professional, or just weird.
.png)
The Chat That Gets You
Built with intention — no clutter, no chaos. Just a clean, distraction-free AI that helps you think, write, and solve.
The Chat That Gets You
Built with intention — no clutter, no chaos. Just a clean, distraction-free AI that helps you think, write, and solve.
Say More with Less Effort
From daily questions to deep ideas, our AI keeps up with your pace and tone — casual, professional, or just weird.
The Chat That Gets You
Built with intention — no clutter, no chaos. Just a clean, distraction-free AI that helps you think, write, and solve.
Why Add a Second Dwelling Unit?
More Space for Family or Guests
A second unit gives you room for parents, adult children, or long-term visitors.
Rental Income Opportunity
You can rent out the second unit to help cover the mortgage or build long-term income.
Better Use of Your Lot
Instead of unused yard space, turn it into something that adds real value.
How It Works
.png)
Share Your Plans and Goals
Use the Instant Online Estimator or contact form to tell us about your property and what kind of second unit you’re considering.
.png)
Get Connected With a Local Design Expert
Home Planning Hawaii matches you with a Honolulu building designer familiar with second unit laws and lot layouts.
.png)
Explore Layout Options
You’ll review detached, attached, or JADU concepts that fit your property and needs.
.png)
Finalize Plans and Get Ready to Build
Once the design is complete, your plans can be submitted for permits and used by your contractor.
Turn Conversations Into Actions
Each tool is crafted to help you relax, recharge, and wake up feeling refreshed. Explore the key benefits that make your sleep better
Anything, Anytime
It’s Like Having a Second Brain
Each tool is crafted to help you relax, recharge, and wake up feeling refreshed. Explore the key benefits that make.
Boost
Talk Your Way, Not Ours, forever
Custom prompt templates to save your best ideas — or your weirdest ones.
What’s Included in SDU Design
- Custom layout based on your property size and shape
- Smart use of space for comfort and privacy
- Kitchen and bathroom plans
- Code-compliant design based on Honolulu zoning
- Detached, attached, or interior layout options
Who Should Consider This Service?
- Homeowners with extra land or side yards
- Families planning for multigenerational living
- Owners interested in legal rental income
Add Space, Income, and Flexibility to Your Honolulu Home
A Second Dwelling Unit can serve many purposes—and with smart design, it can blend beautifully into your property. Home Planning Hawaii is here to help you plan it right and get connected with the local pros who know how to make it happen. Use the Instant Online Estimator, fill out the contact form, or call today to start your second dwelling unit design in Honolulu. One property. Two homes. More possibilities
