Design & Build ADU Experts
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Design

Every successful project begins with a solid plan. At John Christopher Construction, we work with our local architects and designers to provide the perfect plan for each ADU project. Accessory Dwelling Units (ADU) have become very popular in Southern California, and most people are now familiar with them as they see them appearing in their neighborhood.

The purpose of an ADU is only limited by your imagination. Typical uses are for additional living space for a family member, a “mother‑in‑law quarters,” “cottage,” or “granny flat.” They can also be extra space for guests — a casita or guest house. Some use them as a pool house for changing, showering, and easy‑access bathroom. A home office, art studio, game room, or fitness room are also popular choices.

Another popular purpose is adding a separate unit to your property. ADU plans can call for a separate address and separate utility billing and metering so the unit can be used for rental income. Some properties, such as large corner lots, even have room for a separate driveway or fenced yard for additional parking and living space.

We can help you design an ADU that fits your space and budget. We even have several pre‑engineered plans ready for your property.

ADU Affordability

ADUs are one of the most flexible and cost-effective ways to add living space or rental income to your property. Whether you’re considering a detached ADU, an attached addition, or a second-story ADU, there are build options available to fit different budgets, layouts, and long-term goals. The right approach can make an ADU far more affordable than most homeowners expect.

To keep costs under control, you can choose between fully custom ADU builds or pre-approved floor plans that simplify design and speed up the process. John Christopher Construction helps homeowners select smart building options that balance affordability, comfort, and quality so you can move forward with confidence and clarity from day one.