ADU Contractor in Palo Alto

Finding the right ADU contractor in Palo Alto is essential for building a stylish, functional accessory dwelling unit (ADU) tailored to your needs. At Castillo Remodeling, we specialize in designing and constructing ADUs that seamlessly enhance your lifestyle while adding value to your home.

Our team of skilled professionals manages every aspect of the project—from initial design to the finishing touches—ensuring your new space aligns with your vision. Whether you’re looking to expand living areas, accommodate extended family, create a home office, or generate rental income, we ensure every detail is executed with precision and care.

Custom ADU Services – Crafting Accessory Dwelling Units That Fit Your Lifestyle

At Castillo Remodeling, we’re more than just a licensed ADU builder in Palo Alto – we’re your partner in creating functional, beautifully designed accessory dwelling units (ADUs) tailored to your unique needs. Whether you’re adding an extra master bedroom, a multi-purpose family room, or a cozy guest suite, we guide you through every step, from initial concept to the final build, ensuring the highest standards of craftsmanship.

As experts in ADU construction, we navigate the complex legal and regulatory landscape of Palo Alto to ensure your project meets all local requirements. With a deep understanding of zoning, permits, and design standards, we streamline the process, so you can focus on what matters most: creating a space that enhances your home and lifestyle.

ADU construction features – detailed overview by Castillo Remodeling

Factors to Consider Before Building Your ADU

Purpose of the ADU

Whether you’re building an ADU to accommodate an elderly family member, a returning college student, or for rental income, the intended use significantly influences the design. Our team can tailor your ADU to meet specific requirements, such as ensuring accessibility for those with mobility issues or providing privacy for young adults seeking independence.

Understanding Your Property Type

The type of property you own plays a significant role in determining the kind of ADU you can build. Whether you have a single-family home, a multi-family residence, or a duplex, there are specific regulations and limitations set by California’s Government Code that will guide your project.

  • Single-Family Homes:
    If you own a single-family residence, you are permitted to build one ADU along with a Junior ADU (JADU). A JADU is a smaller unit, typically under 500 square feet, and must be incorporated within the existing structure of the primary home. These regulations are designed to maintain neighborhood consistency while offering flexibility for homeowners.
  • Multi-Family Homes & Duplexes:
    Owners of multi-family properties or duplexes are allowed to build up to two detached ADUs, in addition to a JADU. This can be an excellent option for increasing your property’s value, accommodating extended family, or generating rental income.

Meeting Special Needs

When building an ADU, it’s essential to consider any special requirements that may impact the design and functionality, especially if the unit is intended for someone with mobility challenges or other specific needs.

For individuals using a wheelchair or those with limited mobility, incorporating universal design principles is key. This might include:

  • Wider doorways and hallways for easier navigation
  • Lowered countertops and storage spaces for better accessibility
  • Sliding windows and doors for convenience and efficiency
  • Curved or 45-degree corners to minimize hazards
  • Ample lighting for enhanced visibility and safety
  • Circular study or seating areas to encourage open, accessible communication

Our team specializes in creating ADUs that cater to the unique needs of all residents, ensuring that the space is both functional and comfortable.

Modern ADU with stylish design – constructed by Castillo Remodeling

Our ADU Construction Process

As ADU regulations in Palo Alto have relaxed, more homeowners are taking advantage of this opportunity to expand their living space. Whether you want a detached unit or an integrated living space, Castillo Remodeling is the trusted partner you need. Our experienced ADU construction team navigates all legal requirements, permits, and construction phases to deliver a seamless building experience. Here’s an overview of our process:

Eligibility and Zoning Checks

Before starting any project, we verify if your property qualifies for ADU construction. Compliance with California’s Government Code Section 658525.2 and Palo Alto’s Ordinance No. 5507 is critical. We also ensure your property aligns with zoning regulations, such as the number of units allowed and minimum/maximum size requirements for ADUs and JADUs. Don’t worry about the complexities—we’ll guide you through each step.

Site Inspection

A city inspector or zoning official will conduct a site inspection to confirm eligibility for your ADU project. They will use the information from the zoning office to assess compliance with local regulations and ensure that your property meets all necessary requirements.

Our ADU construction team will collaborate with these officials and use the findings to refine your project plans. We’ll guide you through this process, ensuring that all aspects of your ADU adhere to city codes and regulations.

Key Factors:

  • Number of Units: One ADU and one JADU per single-family residence.
  • Size: ADUs must range from 150 to 1,000 square feet, depending on bedroom count and lot size.
  • Height Limits: ADUs are capped at 30 feet for residential estates and 16 feet for other areas.
  • Setbacks & Privacy: Detached units must maintain a 3-foot distance from the primary home, and windows and entrances are strategically designed for privacy.
  • Parking Requirements: Garage conversions may not need replacement parking, but JADUs may require it.

Design and Consultation

Once eligibility is confirmed, we move to the design phase. Using advanced 3D software, we create a detailed site plan that considers your property layout, utilities, and personal preferences. We collaborate with you to finalize the design, ensuring that every aspect aligns with your vision.

Permit Application

ADU construction can only proceed once we secure the necessary permits. Our team manages the entire permit application process, including plumbing, electrical, roofing, and other required authorizations. Additionally, if building a JADU, you’ll need to file a deed restriction, confirming that the unit won’t be sold separately from the primary residence.

Construction and Final Inspection

With permits in hand, we start the site preparation, which includes demolition, clearing, and grading. We then proceed with laying the foundation, framing the structure, installing fixtures, and completing the interior design. Throughout construction, we assist in scheduling inspections to ensure everything meets code at each critical stage—foundation, roofing, plumbing, and electrical. After the final inspection, your ADU will be ready for use!

At Castillo Remodeling, we’re here to make your vision for an accessory dwelling unit a reality.

Contact us today at (650) 781-6585 to schedule a consultation and start planning your perfect ADU. Let’s build something great together!

Frequently Asked Questions

To confirm your eligibility for an ADU, check local zoning laws and regulations. Contact your local building department or consult with us at Castillo Remodeling. We can guide you through the process and ensure your property meets all necessary requirements.

The cost of building an ADU depends on factors such as size, design, materials, and location. Additional costs may include permits, utility connections, and site preparation. For a detailed estimate, contact us at Castillo Remodeling, and we’ll provide a comprehensive cost breakdown.

Yes, you can rent out your ADU (Accessory Dwelling Unit) or JADU (Junior Accessory Dwelling Unit) in Palo Alto, but you must comply with local regulations and zoning laws. This typically involves ensuring the unit meets specific requirements and obtaining any necessary permits. For detailed guidance on rental regulations and compliance, contact Castillo Remodeling. We can help you navigate the process and ensure your ADU or JADU is rental-ready.

An ADU or a JADU is often a good investment with an attractive ROI. Homeowners who build an ADU can see an ROI of up to 35% when their ADU increases in resale value.

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