CUSTOM HOME PLANS

Build What You’ve Always Wanted

Designing a custom home is your chance to create a space that truly reflects your vision, values, and lifestyle. Whether you’re starting with a clean slate or building around a unique piece of land, every great home begins with a smart, code-compliant plan.

At QuickenPlans, we turn your ideas into buildable, permit-ready plans—combining thoughtful design, experienced engineering, and a streamlined process that keeps your goals front and center. We’ll help you navigate local requirements, optimize your layout, and create a plan that works for your site, your budget, and your life.

From compact custom builds to full-scale estates, our team is here to help you design it right from the start—so you can build with confidence.

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Custom Design

Your plans shouldn’t come from a template.

We design around you — your goals, your vision, your space.

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Property Fit

We don’t force designs to fit.

We tailor every layout to work seamlessly with your lot and home.

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Expert Craftsmanship

Our experienced team brings accuracy and care to every detail. 

Quality is at the core of everything we do.

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Turn-key Service

From first sketch to final plan set, we’ve got your back.

Clear guidance, every step of the way.

Build Smart. Live Better.

Custom ADU Plans Designed for Real Life
HOW IT WORKS

Process, Price and Timeframe

HOW IT WORKS

Process, Pricing and Timeline

Design and Permitting Process

 

Designing a custom home is a big step—but it doesn’t have to be overwhelming. At QuickenPlans, we guide you through a clear, collaborative process designed to simplify decisions and keep your project moving forward. Here’s what to expect:

 

1. Site Analysis & Due Diligence

We start by reviewing your lot details, local zoning, and applicable codes to understand what’s possible on your site. From slope and setbacks to height limits and utility access, this gives us a smart foundation for the design.

2. Design Kick-Off

We’ll meet to talk through your goals, inspiration, and must-haves. Whether you’re building your forever home or a high-performance investment property, this is where we align on vision, lifestyle, and long-term priorities.

3. Concept Design Development

With your input, our team begins shaping the layout and flow of your home. You’ll review concept drafts and provide feedback as we refine each version until the design feels just right.

4. Permitting Set of Plans

Once the concept is approved, we prepare your full permit-ready plan set—building design drawings, structural plans, and calculations included—ready for submittal to your local building department.

5. Plan Review & Permitting

We assist with submittal and stay on top of the review process. If revisions are requested, we handle those promptly and work with the city to move your project through approval as efficiently as possible.

6. Construction

Even after your permit is issued, we remain available to support your contractor with design clarifications and engineering adjustments. Our goal is to help you build exactly what we designed—no confusion, no delays.

How Much Does It Cost?

 

Designing a custom home is a major investment—and we believe the pricing for your plans should be clear and predictable. That’s why we work on a flat-fee basis, with pricing based on project scope—not a percentage of your total construction budget.

Many architects charge 4–7% of the construction value for design services. At QuickenPlans, we offer transparent, fixed pricing based on what your project actually requires. No guesswork. No inflated fees.

 

What Affects the Cost?

Several factors influence the overall design and engineering cost of your ADU:

• Location: Local codes, HOA rules, and permitting complexity can all influence scope.

• Size & Layout: Larger homes or multi-level designs typically require more planning and coordination.

Design Complexity:

Straightforward builds with simple layouts are more efficient to plan.

Custom layouts, premium features, or unique conditions increase design complexity.

Construction Methods: Advanced techniques or high-end finishes may increase planning requirements.

Site Conditions: Sloped lots, narrow parcels, or utility challenges may require additional planning or engineering.


 

What’s the Price Range?

Here’s a general breakdown of what to expect:

 Mid-size, straightforward homes – $25,000–$30,000

 Larger or more complex projects – $40,000+

This includes complete building design and structural engineering services, energy compliance documentation (if required), and a full permit-ready plan set. Site surveys, grading plans, or civil engineering (if needed) are not included.

 

Getting an Accurate Estimate

Every property and project is different. That’s why the best way to get a clear cost estimate is to book a consultation. We’ll review your goals, site details, and timeline—and provide a tailored proposal that reflects the real scope of your project.

Timeline & What You’ll Get

 

When planning a custom home, it’s important to understand the full scope—how long it takes and what’s included. At QuickenPlans, we balance thoughtful design with efficient execution, so your plans are complete, coordinated, and ready to move forward.

 

How Long Does It Take?

The design process is a true collaboration. We work quickly on our end while relying on timely decisions and feedback from you to stay on schedule. Here’s a general outline:

First Concept Design:

After your design kick-off meeting, we’ll deliver your first concept iteration within 10–15 business days. This is the first time you’ll see your vision start to take shape.

Full Plan Set:

Most custom home projects are completed in 4–6 months, depending on project complexity and communication pace.

 

What’s Included?

Deliverables may vary slightly based on your local regulations, but here’s what’s typically included in a full custom plan set:

Floor Plan – Interior layout with room dimensions, doors, windows, and fixtures.

Elevations – Exterior views from all sides, showing windows, rooflines, and finish details.

Sections – Cross-sectional views that show how different levels and spaces relate.

Roof Plan – Roof design with slopes, materials, and any skylights or special features.

Basic MEP Layout – Placement of visible Mechanical, Electrical, and Plumbing fixtures.

Construction Details – Key details like wall assemblies, connections, etc.

Structural Drawings & Calculations (for structural remodels) – Foundation, framing, and structural specs, prepared and stamped by one of our in-house licensed engineers, ready for review by building officials.

Energy Compliance Report – Required in many areas, this ensures your project meets current energy efficiency standards.

 

Let’s Make It Happen

We take your vision seriously—and make the process clear, collaborative, and predictable. Let’s bring your custom home to life, one well-designed step at a time.

Ready to take the next step?

WHY CHOOSE US

QuickenPlans: Real Expertise. Real Accountability. No Guesswork.

 

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Licensed Staff

 

Our in-house Structural Engineers are fully licensed and in good standing with the State of California.

Don’t leave safety to chance — work with a team that knows the codes inside and out.

 

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Fully Insured

 

We carry General Liability, Professional Liability and Errors & Omissions insurance, so your project is protected from day one.

It’s coverage you can count on.

 

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Revisions Covered

 

We cover all revisions requested by the plan reviewer—as long as they relate to the original design scope.

No surprise fees, no runaround. We’ll get it right while keeping your budget intact.

 

CLIENTS REVIEW

What Our Clients Are Saying About Us

We don’t just talk the talk — our clients say it better than we ever could.

 

For many years I have been working with the architectural & structural engineers at 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 document business with as much integrity, transparency, communication, and efficiency as QuickenPlans.

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Donna K. | San Diego

Amazing service. Great Value for the price. QuickenPlans' team is knowledgable, helpful, and communicative. Use them for multiple projects, big and small.

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Dee C. | Carlsbad, CA

Very helpful in providing professional feedback. I would definitely recommend them.

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Mina K. | San Jose, CA

Contracted QuickenPlans to design a large deck for the front of our house. They were very diligent and provided exactly the the support we required.

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Henry J. | Woodside, CA

Our client received a violation notice from the city for an unpermitted addition. The guys from QuickenPlans helped us put together a set of plans for legalization and advised on how to address the city’s comments.

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Xavier S. | Redwood City, CA

I got my ADU plans done and we’re now in the permitting stage. What I really appreciate about the QuickenPlans crew is that they didn’t just stop at the drawings but they’ve been actively helping us deal with the permit side too

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Wilhelmina M. | San Mateo, CA

We’ve had QuickenPlans do plan sets for a bunch of our clients. They’ve always been dependable. One project was a real headache — a client had unpermitted work flagged by the city, violations and all. QuickenPlans put together plans and a detailed response letter that helped avoid big fines. Quick tip: if you’re buying a flipped house, always double-check if the work was permitted.

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Prangrudee C. | Los Angeles, CA

I used Quicken Plans to come up structural plans for building permit approval for family room extension project. Team was very professional from get go and delivered on time and available for questions anytime we reached out to them! I would highly recommend this for anyone considering a professional firm to work with!!

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Anil M. | Saratoga, CA
HAVE A QUESTION?

Frequently Asked Questions

Why do I need plans for my Custom Home?

Plans aren’t just a formality—they’re a requirement. You’ll need a full set of plans to get your permit and legally remodel your space. Permits protect your investment and your property value. Unpermitted work can lead to fines, failed inspections, or even issues with refinancing or selling. Our plan sets include everything you need for smooth approvals and construction—framing, foundation, structural calculations, and more.

How long does the design process take?

What factors influence the cost of a Custom Home design?

What’s included in the Custom Home plans?

Will I need anything else for a permit?

Can I request design changes after the first concept?

Can you help me find a contractor?

Will you work with my contractor during the project?

My previous designer dropped the ball—can you take over?

Do you offer special terms for contractors or design pros?

What if the city requires changes after plan submittal?

Can you help with design ideas or layout options before I commit?

Still have questions?

Build Smart. Live Better.

Custom Plans Designed for Real Life