ADU & JADU

SHORT OVERVIEW

Accessory Dwelling Units (ADUs) and Junior ADUs (JADUs) are one of the fastest ways to expand living space and generate extra income in Los Angeles. From garage conversions to detached units, 121 Design Build creates smart, code-compliant designs that move quickly through approvals. Our team ensures each project is tailored to your lot, lifestyle, and financial goals, helping you unlock the hidden value of your property while adding long-term flexibility.

WHAT’S INCLUDEED IN OUR SERVICE?

  • Garage Conversions – Transform underused garages into modern, functional living units.
  • General Conversions – Convert basements, rec rooms, or spare areas into rentable or family-ready spaces.
  • New Builds – Design and permit detached or attached ADUs that expand property use.
  • Multi-Family ADUs – Create detached units within multi-family properties while staying fully compliant with city codes.
  • Custom Solutions – Tailor each unit’s layout, finishes, and size to match lifestyle needs or investment goals.

WORKING PROCESS TAILORED FOR YOU

Feasibility Review
01.

We carefully evaluate your lot size, setbacks, and zoning regulations to confirm what’s possible before design begins. This prevents costly surprises and gives you a clear roadmap from the start.

Concept & Plans
02.

Our team develops multiple layout options so you can compare and refine ideas. Once the best design is chosen, we prepare detailed construction documents that are fully code-compliant and ready for submission.

Build Support
03.

Beyond approvals, we stay involved during construction to coordinate with contractors, answer questions, and ensure your ADU or JADU is built exactly as designed. This oversight guarantees accuracy and quality.

KEY FEATURES

1. Deep ADU Code Expertise

We stay current with California’s evolving ADU laws and Los Angeles zoning requirements. This ensures your project is fully compliant and positioned for the fastest possible approval.

2. Fast Permit Timelines

With complete and accurate documentation, many ADU permits can be secured in just a few months. Our process reduces city corrections and accelerates your project timeline.

3. Cost-Efficient Footprints

ADUs and JADUs are designed with compact, efficient layouts that maximize function without overspending on construction. Smart design keeps projects affordable and profitable.

4. Single-Family & Multi-Family Options

Whether you’re a homeowner looking to add a rental unit or a developer expanding a multi-family site, we design flexible solutions that fit your property type.

5. Flexible Models for Rental or Family Use

Each ADU or JADU can be customized for rental income, guest quarters, or multigenerational living. You get a space that fits your goals today and adapts to tomorrow.

6. Rental Income Potential Analysis

We help you understand projected rental returns and market potential, giving you a clear picture of the financial benefits before you build.