Modern 2-Bedroom ADU Floor Plans
Designed for roommates, small families, or premium rental yields, our 2-bedroom ADU plans are our most popular high-equity layouts. These designs range from 750 to 1,000 square feet, giving you a full-size home feel in your backyard.
Detached 
The Coronado
$1,497A space-efficient two-bedroom backyard cottage. Features a central living-dining area with bedrooms on opposite ends for maximum privacy. Ideal for small families, roommates, or house-hacking.
- ✓ Split Bedroom Layout
- ✓ Dual Entry Deck Option
- ✓ Walk-in Shower
- ✓ Title 24 Compliant
Detached The Del Mar
$1,497A premium two-bedroom, two-bathroom detached ADU. Includes a dedicated master suite, double-vanity guest bathroom, kitchen island, and stackable laundry closet. Feels like a full-size primary home.
- ✓ Master Suite
- ✓ Kitchen Island
- ✓ Double Vanity
- ✓ Walk-in Closets
Two-Story The Avalon
$1,497A stunning two-story 2-bedroom design. The first level houses the living room, kitchen, and bathroom. The second level features two bedrooms, a full bath, and laundry. Perfect for tight lots.
- ✓ Two-Story Living
- ✓ Downstairs Powder Room
- ✓ Upstairs Laundry
- ✓ Balcony Option
State-by-State Compliance
ADU Stamp Rules & Legislation Guidelines
Understanding engineering requirements and permit pathways across our core states.
Arizona (AZ)
✓ No Stamp RequiredArizona SB 1161 (2022) prohibits cities from banning ADUs outright. Local jurisdictions may regulate size, setbacks, and design but cannot prohibit ADUs entirely. Most permits are ministerial. Architect stamp generally not required for single-family residential projects. Phoenix, Scottsdale, and Tucson have streamlined ADU permitting programs.
California (CA)
⚠ Stamp RequiredCalifornia has the most permissive ADU laws in the US. State law preempts most local restrictions. ADUs up to 1,200 sq ft allowed. JADUs up to 500 sq ft permitted. No owner-occupancy requirement through 2025. Ministerial approval required — no discretionary review. Stamped drawings required for permit submission in most jurisdictions.
Colorado (CO)
⚠ Stamp RequiredColorado HB 24-1152 (2024) requires all municipalities with populations over 1,000 to allow ADUs by right in single-family zones. Effective July 2025. Detached ADUs up to 1,000 sq ft permitted. Garage conversions and attached ADUs also covered. Licensed architect or engineer stamp required for permit submission statewide.
Florida (FL)
✓ No Stamp RequiredFlorida passed HB 1339 in 2023 requiring most municipalities to allow ADUs in single-family zones. ADUs generally capped at 1,000 sq ft or 60% of primary home size. Garage conversions widely permitted. Architect stamp not required for most residential projects under 7,500 sq ft per Florida Statute 481.229.
Oregon (OR)
⚠ Stamp RequiredOregon HB 2001 (2019) legalized ADUs statewide as a matter of right in cities over 2,500. Oregon SB 1045 removed owner-occupancy requirements. Most cities cap detached ADUs at 900 sq ft. Garage conversions widely permitted. Engineer or architect stamp required for structural drawings in Oregon residential projects.
Texas (TX)
✓ No Stamp RequiredTexas has no statewide ADU law — regulations are set by individual cities and counties. Austin, Houston, and Dallas have ADU-friendly policies. Rural areas are generally permissive. Stamp requirements vary by jurisdiction; most cities under 50,000 population do not require a licensed architect stamp for residential projects under a certain threshold.
Washington (WA)
⚠ Stamp RequiredWashington HB 1337 (2023) requires all cities and counties to allow at least two ADUs per single-family lot. DADUs up to 1,000 sq ft and attached ADUs up to 1,000 sq ft permitted by right. No owner-occupancy requirement. Architect or engineer stamp required for building permit in most Washington jurisdictions. Effective July 2024.
The Done-For-You Path
Want Your Your Property ADU Fully Done For You?
Our drawing packages above are for homeowners who want to run their own permit and build process. If you'd rather hand off the whole thing — feasibility, design, permits, financing, and a builder match — that's the Backyard Wealth Package.
We turn your backyard into a rental unit. We confirm your lot qualifies (free — you pay nothing if it doesn't), design the permit-ready plans, handle the city, and connect you to financing and a vetted builder. One flat fee — about what an architect charges just to start.
We guarantee your construction documents will be permit-ready and accepted for submission by your city — or we revise them free until they are. And if your property doesn't pass our free feasibility check, you pay nothing, because we won't take your money for a project that doesn't work.
We won't even take your money unless your property qualifies.
Frequently Asked Questions
Category Details & Build Advice
Are 2-bedroom ADUs allowed in my backyard?
Yes. Most modern ADU regulations (like California, Washington, and Oregon state laws) allow ADUs with up to 2 bedrooms by right. They are typically subject to local height limits, setbacks (usually 4 feet), and lot coverage ratios.
How much rental premium does a 2-bedroom ADU command?
A 2-bedroom ADU typically rents for 30% to 50% more than a studio or 1-bedroom in the same neighborhood. This premium makes 2-bedroom layouts highly attractive for homeowners looking to maximize absolute cash flow from their backyard.
What size should a 2-bedroom ADU be?
We recommend building 2-bedroom ADUs between 750 and 1,000 square feet. This provides enough room for a spacious living area, dining area, two comfortable bedrooms, and one or two bathrooms, keeping it highly functional.
Local Guides
ADU Permitting Guides by City
Select your local city to review site check timeline, rental yield data, and building department URLs.