Backyards in California have evolved into more than just open spaces. they’re now functional, personal retreats. With the rise of accessory dwelling units (ADUs), homeowners are rethinking how to make the most of their outdoor areas. But what if you already have a swimming pool?

Can You Build an ADU Next to a Pool?

The short answer is yes, in most cases. However, there are several important considerations. ranging from building codes to safety requirements-that influence whether it’s feasible on your property. This article walks you through everything you need to know about building an ADU next to a pool in California, offering insight into what the process involves and how professionals like Nestadu help make it happen.

Why Homeowners Consider ADUs Near Pools

Homeowners who already have a pool often want to build an ADU nearby for several reasons:

• Guest accommodations: Hosting family or friends is more convenient with a detached living space near the pool.
  
• Rental income: A poolside ADU is attractive for short-term or long-term renters.
  
• Multi-use space: ADUs near pools are ideal for offices, wellness studios, or pool houses with kitchens and bathrooms.
  
• Increased privacy: Separating living spaces from the main home while still enjoying shared access to the pool.
  

With the demand for flexible housing increasing across California, combining a pool with a detached unit adds both function and value to a property.

Zoning Laws and Setback Rules

While it’s technically possible to build an ADU next to a pool, city and county regulations ultimately determine what’s allowed.

Setbacks

Setbacks refer to the required distance between the ADU and existing features on your property, including pools, fences, property lines, and other structures. These distances vary depending on your jurisdiction.

In many California cities:

• Side and rear setbacks for detached ADUs are often 4 feet.
  
• Distance from the pool is not always explicitly defined in ADU laws, but general building codes may require at least 5–10 feet for safety and maintenance access.
  

For example, Los Angeles might have different requirements compared to Santa Clara or Orange County. That’s why working with an experienced ADU builder like Nestadu is crucial-we handle site evaluations, zoning research, and permit coordination specific to your location.

Safety Codes and Pool Proximity

Building near water involves an added layer of responsibility. California building codes are strict when it comes to safety, particularly for structures close to swimming pools.

Key Safety Considerations

1. Pool Barrier Requirements
   If an ADU door opens into the pool area, you may need to install a pool fence or additional gate. California law often requires a barrier at least 60 inches high to prevent unsupervised access.
   
2. Electrical Code Compliance
   Electrical outlets and lighting installed near a pool must follow Ground-Fault Circuit Interrupter (GFCI) regulations to avoid shock hazards.
   
3. Fire Separation and Egress
   ADUs must meet fire codes for separation from other structures, including garages and pool equipment. You’ll also need to ensure windows and doors provide proper egress in case of an emergency.
   
4. Drainage and Water Management
   Pool runoff and splash zones need to be factored into the ADU’s foundation and drainage plan to avoid moisture issues.
   

Nestadu’s construction team works directly with inspectors and local officials to ensure every element is up to code from the start.

Architectural Planning and Design Challenges

Designing an ADU next to a pool requires balancing lifestyle goals with practical constraints. A good design should protect the structure from moisture, provide privacy, and work harmoniously with your home’s layout.

Considerations During Planning

• Space Efficiency
  In tight lots, space-saving layouts are essential. This might mean incorporating a studio-style floor plan or using built-in storage and compact appliances.
  
• Moisture Protection
  Given its proximity to water, the ADU should be built with water-resistant siding, proper sealing, and durable materials.
  
• Privacy Features
  Privacy goes both ways. Residents in the ADU and users of the pool will both benefit from smart landscaping, frosted windows, or screens that create separation.
  
• Outdoor Connectivity
  Designing an ADU that opens up to the pool area with French doors or a shaded patio can create a beautiful, functional backyard experience.
  

At Nestadu, we don’t use one-size-fits-all designs. Every plan is tailored to the site, use case, and your long-term needs.

Permit Process: What to Expect

Building near a pool doesn’t just involve design; it also affects your timeline due to the extra steps needed during permitting.

General Steps to Expect:

1. Site Evaluation
   We begin by assessing your lot, pool layout, and any easements or restrictions.
   
2. Preliminary Design and Drafting
   Once we understand the limitations, our team creates a design that fits both your vision and code requirements.
   
3. Permit Applications
   All ADUs require permits for planning, building, electrical, and plumbing. Building near a pool may involve additional scrutiny from zoning departments and health and safety officials.
   
4. Inspections
   During construction, multiple inspections will be scheduled, including checks for structural integrity, electrical safety, and pool barrier compliance.
   

Working with Nestadu means you won’t have to navigate this alone. We manage all permits, communicate with local agencies, and adjust plans as needed based on feedback.

Real-Life Uses for Poolside ADUs

An ADU near a pool can serve more than just one function. Here are a few ways California homeowners are putting this layout to use:

• In-law suite with easy access to outdoor space
  
• Rental unit that doubles as a pool house during the day
  
• Home office with serene water views
  
• Changing room and lounge with shower, kitchenette, and guest sleeping area
  
• Wellness studio with spa elements and a meditation zone
  

Your vision doesn’t need to be extravagant-it just needs to be practical and aligned with how your family lives today.

Tips for Homeowners Planning an ADU Next to a Pool

Here’s a quick list of important things to keep in mind if you’re starting the process:

• Get a professional site evaluation before committing to plans.
  
• Consult your city’s ADU and pool ordinances, or let a local expert handle it.
  
• Think long-term use-design the unit for flexibility, not just immediate trends.
  
• Prioritize ventilation and waterproofing during construction.
  
• Don’t forget utility access-water, power, and sewer connections are easier when mapped out early.
  

Why California Homeowners Trust Nestadu

Building an ADU near a pool requires experience in more than just construction. It involves smart design, code compliance, and an understanding of how real people use backyard spaces. Nestadu brings that local knowledge and attention to detail to every project.

We specialize in designing ADUs that feel like a natural extension of your property. Whether you’re adding a guesthouse, building for family, or considering rental income, we work with you from concept to completion. Our team handles everything-from drafting to permits to finishing touches-so you can focus on the purpose behind your build.

Final Thoughts

Yes, you can build an ADU next to a pool-but only if you follow local rules and plan carefully. With the right team and thoughtful design, your backyard can become a multi-functional space that serves you for years to come.

If you’re ready to explore what’s possible for your property, reach out to the team at Nestadu. We’ll help you bring your ideas to life with clarity, care, and craftsmanship.