ADU Plans: Custom & Pre-Approved Designs for your Bay Area Property
Maximize your living space, generate rental income or create a guest house!
What are ADU Plans?
Accessory Dwelling Units (ADUs) are a smart solution for homeowners who want to add more living space. Whether you need a granny flat, home office, or rental unit, having the right ADU plans ensures a smooth approval process and compliance with local building codes.
Why Choose an ADU?
- Generate passive rental income
- Create a separate space for family or guests
- Increase property value
- Utilize underused space like a garage or backyard
- We specialize in ADU plans for San Ramon, Danville, Pleasanton, Walnut Creek, and San Leandro
Types of ADU Plans
Detached ADU Plans
- Standalone unit separate from the main house
- Ideal for rental income, guest suites, or home offices
- Available in modern farmhouse, Cape Cod, and contemporary styles
Attached ADU Plans
- Connected to the primary residence with a private entrance
- More affordable than detached units (shared utilities)
- Perfect for in-law suites or aging parents
Garage Conversion ADU Plans
- Transforms an existing garage or storage space
- Cost-effective studio or one-bedroom ADU option
- Popular in urban areas where yard space is limited
ADU Over Garage Plans
- Uses unused space above a garage
- Maximizes living space without taking up yard area
- Ideal for a single-bedroom or two-bedroom layout
Pre-Approved ADU Plans
- Fast-tracked permit approval saves time
- Lower permit fees and design costs
- Available in 600 sq ft, 800 sq ft, and 1,200 sq ft options
Key Features of Our ADU Plans
1
Site Plan
Mapping out the build location and setbacks
2
Foundation Options
Slab, crawl space, or pier foundations
3
Floor Plan Layouts
Bedrooms, living areas, and kitchen designs
4
Structural Engineering
Roof trusses and building code compliance
5
CAD Files & Plot Plans
Ready for submission to building departments
Custom vs. Pre-Designed ADU Plans
For homeowners who need quick approval and cost savings, we offer pre-approved ADU plan sets. However, if you need a custom ADU to match your specific needs, we provide full-service design and drafting solutions.
| Feature | Pre-Designed ADU Plans | Custom ADU Plans |
|---|---|---|
Approval Speed |
Fast (pre-approved) |
Requires review & modifications |
Cost |
Lower (ready-to-use) |
Higher (personalized features) |
Flexibility |
Limited |
Fully customizable |
Aesthetic Appeal |
Standardized designs |
Matches your main house and property style |
Choosing the right ADU Sizes & Layouts
- Budget & Permit fees
- Size of Unit (square footage)
- Number of Bedrooms
- Intended Use (rental income, guest house, home office)
Small ADU Plans (400-600 Sq Ft)
Perfect for studio or one-bedroom ADUs, these compact layouts maximize efficiency with a smaller footprint.
Mid-Size ADU Plans (700-900 Sq Ft)
Ideal for two-bedroom ADUs, these designs balance living space and affordability.
Large ADU Plans (1,000 - 1,200 Sq Ft)
Best for families needing more square footage, featuring open floor plans, larger kitchens, and additional living areas.
Popular Floor Plans We Offer
- 450 Sq Ft ADU Plans - Space-efficient designs
- 600 Sq Ft ADU Plans - Includes one-bedroom ADU floor plans
- 800 Sq Ft ADU Plans - Popular for detached ADUs
- 2-Bedroom ADU Floor Plans - Great for rental income or extended family
- ADU Garage Plans - Transforms a garage into a livable space
ADU Building Permits & Approval Process
Every ADU house plan must comply with local building regulations. Our team helps you navigate the:
- Building Permit Application - Ensuring all building plans meet regulations
- Permit Fees & Review Fees - Cost estimates and payment processing
- Design Review & Approval - Assisting with site plans and layout approvals
Since San Ramon, Danville, Pleasanton, Dublin, Walnut Creek, and San Leandro have unique zoning laws, we unsure your ADU plans are fully compliant.
Why Choose Bay Area Design Consultants for your ADU Plans?
Expert ADU Planning & Drafting
20+ years of experience
Custom & Pre-Approved Plans
Options to fit every budget
Local Knowledge
Serving San Ramon, Danville, Pleasanton, Dublin, Walnut Creek, and San Landro
Faster Permitting Process
Pre-designed ADU plan set for quicker approvals
Get Started on Your ADU Project Today!
Ready to build your Accessory Dwelling Unit? Whether you need a custom ADU floor plan or a pre-approved ADU plan, our team is here to guide you through the process.
Call Us
Consultation
ADU FROM BAY AREA DESIGN
Get More Out of Your Property
Looking for a way to maximize the potential of your property? An ADU might be the answer. As a secondary housing unit on a single-family residential lot, an ADU can provide a valuable source of rental income for homeowners while also offering low-cost housing for renters. At Bay Area Design Consultants we specialize in helping homeowners navigate the complexities of ADU construction and design, from initial consultation to the final building stages. Our team of experienced professionals will work with you every step of the way to ensure your ADU project is a success.
01
Refine Your Ideas, Create Floor Plans and Elevations
Our experienced designers will work with you to refine your ideas and create detailed floor plans and elevations for your ADU. If you’re looking for a quicker turn around, we also offer pre-made designs that can be customized to your specific needs.
02
Get Your Plans Approved by the City and Understand the Regulations
Our team is well-versed in the complex regulations surrounding ADU construction in the Bay Area. We will handle the permit process and ensure that your plans meet all necessary regulations and requirements.
03
Maximize Natural Light, Window Placements, and Views
Our designers will work with you to maximize natural light and window placements in your ADU, creating a bright and airy space that feels open and welcoming. We’ll also help you take advantage of any stunning views your property may offer.
04
Maximize Usable Space and Storage
Our designers understand how to make the most of every inch of your ADU, maximizing usable space and storage to create a functional and practical living space.
05
Suggest Stylish Materials and Appliances
Our designers will suggest stylish materials and appliances that fit your aesthetic preferences and budget, ensuring that your ADU is both beautiful and functional.
06
Assemble a Team of Specialists, Energy Consultants, and Structural Engineers
We work with a network of top specialists, including energy consultants and structural engineers, to ensure that your ADU is built to the highest standards of quality and energy efficiency.
07
Oversee the Construction Phase and Keep Things on Schedule
We will oversee the construction of your ADU, keeping things on schedule and ensuring that everything is built according to plan.
08
We Provide Customized Design for Your Budget
Our team will work with you to provide a customized design that fits your budget and exceeds your expectations. We’ll help you create the ADU of your dreams without breaking the bank.
