ADU Plans
Custom ADU plans designed to maximize your property's potential — from garage conversions to detached new builds.
Unlock the Possibility
An ADU is more than just extra space — it's a smart investment in your property's value, flexibility, and future. Whether you're creating a rental unit, a guest suite, or a space for family, a well-designed ADU starts with a solid plan.
At QuickenPlans, we make the process simple. With hundreds of ADU projects completed across California, we know how to navigate local regulations, streamline the design, and deliver permit-ready plans that get approved — without the runaround.
From garage conversions to detached new builds, our team designs every ADU to fit your property, your goals, and your budget — seamlessly.
- Flat-fee pricing for full plan sets
- Includes building design, structural engineering coordination, and energy compliance
- Tailored for garage conversions, detached units, and additions
Custom Design
Your plans shouldn't come from a template.
We design around you — your goals, your vision, your space.
Property Fit
We don't force designs to fit.
We tailor every layout to work seamlessly with your lot and home.
Expert Craftsmanship
Our experienced team brings accuracy and care to every detail.
Quality is at the core of everything we do.
Turn-key Service
From first sketch to final plan set, we've got your back.
Clear guidance, every step of the way.
Process, Pricing and Timeline
Designing and permitting an ADU can feel overwhelming — but it doesn't have to be. We've streamlined the process to keep things clear, efficient, and on track from day one.
Site Analysis & Due Diligence
Every great project starts with a solid foundation. We begin by analyzing your site and gathering all relevant information. If your project involves modifying an existing structure, we'll also complete a 3D scan to produce accurate As-Built Plans.
Design Kick-Off
Next comes the design kick-off meeting, where we dive into your vision, layout needs, and design preferences. It's the perfect moment to get aligned, explore ideas, and map out a smart, streamlined plan for moving forward.
Concept Design Development
Our design team gets to work on your Concept Design. This phase is collaborative and iterative — we'll share progress with you along the way, and your feedback on each version helps us fine-tune the design until it's just right.
Permitting Set of Plans
Once the Concept Design is approved, our team coordinates the development of the full Permitting Set of plans — including structural engineering, energy compliance, and all required documentation.
Plan Review & Permitting
With the Construction Documents ready, your plans are submitted to the local building department for review. We address any plan review comments within the original design scope at no extra cost. For a fully hands-off experience, our Permitting Agent add-on lets us act as your representative — submitting plans and communicating directly with the building department on your behalf.
Construction Support
Getting a permit isn't the finish line — it's just the beginning. As your designer and engineer of record, we stay involved throughout construction, supporting your contractor with any questions about the plans.
Ready to take the next step?
Trusted by Property Owners and Contractors Across California
"For many years I've been working with QuickenPlans. Because I have been in this business for more than 40 years I can honestly let you know that you will not find a different construction docs business with as much integrity, transparency, communication, and efficiency as QuickenPlans."
Ready to Get Started?
Get an instant estimate for your project or speak directly with one of our design experts — no pressure, just honest guidance.