Add the room your Corte Madera home has been missing.
From a single bedroom to a full second story, Clear Design and Build plans, permits, and builds home additions for Corte Madera homeowners, with transparent pricing and no surprises along the way.
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Additions in Corte Madera
An ADU adds real living space and real value to your property. At Clear Design & Build, we specialize in designing and building accessory dwelling units that work for rental income, extended family, or simply more room to grow. As one of the top ADU builders in Marin County, we bring together thoughtful design, permit expertise, and skilled craftsmanship to turn unused space into a fully livable home.
From garage conversions to detached backyard units, our team builds ADUs to California’s statewide standards, on time and on budget. If you’re searching for an experienced ADU contractor in Marin County, we’re your trusted partner.
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Three stages, one seamless addition.
Every square foot we add to your Corte Madera home moves through the same disciplined sequence, with no shortcuts and no surprises.
Consultation & Planning
We walk your Corte Madera property, measure what's actually possible, and map a clear plan, covering scope, permits, and budget, before anything is promised.
Design & Preparation
Layouts get finalized, materials selected, and approvals secured with the Town of Corte Madera, with every detail signed off before we break ground.
Build & Final Touches
Framing, finishes, and every last detail, executed with the same craftsmanship, until your new space is ready to live in.
Everything your addition needs, under one roof.
From the first sketch to the final coat of paint, we coordinate every trade your Corte Madera addition requires.
Room Additions
New bedrooms, home offices, or in-law suites, designed to feel like they were always part of the house.
Second-Story Additions
Adding a full upper level when your lot has nowhere left to expand outward.
ADU & Garage Conversions
Accessory dwelling units built to California's statewide standards, for rental income or extended family.
Kitchen & Dining Expansions
Opening up tight, closed-off floor plans into the open living space Corte Madera homes are known for.
Permits & Structural Engineering
Plans, permits, and structural sign-off with the Town of Corte Madera, handled start to finish.
Interior Finishes & Details
Flooring, trim, lighting, and paint selected and installed to match the rest of your home.
How fast can we add your space?
Every Corte Madera project moves at its own pace, but most additions follow this same rhythm from first call to move-in day.
More space adds more than square footage.
A well-planned addition does two things most home improvements can't. It gives you room to actually live in today, and equity you can point to later. In Corte Madera's market, that combination is hard to beat.
Stay where you love living
Skip the moving costs, higher rates, and new school scramble. Add the room instead of leaving the neighborhood.
Built to match, not bolted on
Every addition is designed to read as part of the original home, never like something tacked onto the back.
Space today, equity tomorrow
Additions are consistently one of the strongest performing home improvements for resale value, because buyers pay for square footage they can see.
What Marin County homeowners say.
Real feedback from real Corte Madera and Marin County clients.
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Let's plan your Corte Madera addition.
Every project starts with a conversation. Tell us what you need more room for, and we'll walk you through what's possible, what it costs, and how long it takes.
Free estimates. Straight answers. No pressure.
Questions about your addition, answered.
The same questions come up on almost every Corte Madera project. Here are honest answers to the five we hear most.
Do I need a permit for a home addition in Corte Madera?
Yes. Any addition that adds square footage, whether it's a new room, a second story, or an ADU, requires a building permit from the Town of Corte Madera. We handle the permit filing, plan review, and inspections as part of every project, so you don't have to navigate the process yourself.
How much does a home addition cost?
Cost depends on the size, scope, and finishes you choose. A single bedroom addition runs very differently from a second-story expansion or a full ADU. Rather than quote a number that might not fit your project, we walk your property and put together a detailed estimate based on what you actually want to build.
How long does a home addition take from start to finish?
Most additions run about 4 to 7 months from the first consultation to move-in day, covering planning, permitting, and construction. Permit review times and material lead times are the biggest variables, and we'll map out a realistic timeline for your specific project before you commit to anything.
Can I stay in my home during construction?
In most cases, yes. We plan the work to keep disruption to daily life as low as possible, and we'll tell you upfront if any part of the project, like a major structural tie-in, requires you to be out of the space for a short stretch.
What's the difference between a home addition and an ADU?
A home addition expands your existing house, like a new bedroom or a second story. An ADU (accessory dwelling unit) is a separate, self-contained living space with its own kitchen and bathroom, often built above a garage or in the backyard. California's statewide ADU standards make them easier to build than in the past, and we can help you figure out which option fits your goals.