Your ADU Experts in Northern California

At Timberline Consultants, we specialize in designing high-quality, functional, and code-compliant Accessory Dwelling Units (ADUs) that maximize your property’s potential. Whether you’re looking to build a backyard cottage, garage conversion, or a standalone unit, our team of experienced engineers, drafters, and project managers will guide you through every step of the process.

From initial design concepts to permit approvals, we provide a seamless and efficient experience. Our in-depth knowledge of Northern California zoning laws ensures that your ADU is designed to meet all requirements while optimizing space, style, and functionality.

Whether you’re creating a rental unit, guest house, or additional living space, we make the process stress-free. Get in touch today to start your ADU journey with the experts!

Why Choose Us?

✔ Full-Service ADU Design – We handle everything from site evaluation to construction-ready plans.
✔ Efficient Project Management – Our project managers keep your ADU on track and within budget.
✔ Quick Cost Estimates – Work with our trusted builders or get a fast quote from our network.
✔ Code Compliance Guaranteed – We ensure all plans meet the latest city and county regulations.