ADU Knowledge
June 8, 2024

Calabasas ADU Architects - How much does it cost?

Argi Avetisyan
Argi Avetisyan
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Calabasas ADU Architects - How much does it cost?
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Accessory Dwelling Units (ADUs) have gained popularity in recent years because they offer a versatile solution to housing shortages, provide rental income opportunities, and increase property values. Calabasas, known for its luxurious homes and scenic views, is no exception to this trend. Homeowners here are increasingly recognizing the potential of ADUs to enhance both their property's functionality and market value.

What Do ADU Plans Typically Include?

When embarking on an ADU project, it's essential to understand what your plans will entail. Here are some of the critical components:


  • Site Analysis: Assessing the suitability of your property for an ADU.
  • Structural Calculations: Ensuring the ADU can be safely built and will be structurally sound.
  • Utility Planning: Integrating electrical, plumbing, and HVAC systems efficiently.

Title 24 Compliance

Title 24 refers to the California Building Standards Code, which sets energy efficiency standards. Meeting these standards is crucial for sustainability and can also offer long-term cost savings.

Architectural Design

  • Floor Plans: Detailed layout of the ADU.
  • Elevations: Visual representations of the exterior.
  • Material Selection: Choosing the right materials for durability and aesthetics.
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Navigating the permitting process can be complex, but it's a vital step in ensuring your ADU complies with local regulations and building codes.

The Impact of ADUs on Property Value in Calabasas

ADU cost

Adding an ADU to your property in Calabasas can be a smart move for several reasons:

Boosts Property Value

ADUs add significant value to your property. In places like L.A. County, ADUs can increase a property’s sale price by around 24%, adding about $250K in value.

Rental Income

Besides offering extra living space, ADUs can also generate rental income. This can help homeowners offset their mortgage or provide a steady income stream.

Market Trends

  • The demand for properties with ADUs is on the rise, leading to higher property values.
  • ADUs are becoming popular for their potential to address housing shortages and offer flexible living options.

Legal and Tax Implications

  • Ensure your ADU complies with local ordinances to avoid non-compliance risks.
  • Property taxes will likely increase due to the added value, but there might be federal or local tax deductions related to energy efficiency or other incentives.
  • Income from renting out an ADU must be reported, but certain deductions can offset the added tax burden.

Construction and Design

  • The cost and complexity of building an ADU vary based on whether you’re converting existing space or constructing a new unit.
  • Design and materials play a significant role in the overall cost and appeal of the ADU.

Long-Term Benefits

Despite the initial costs and increased taxes, the long-term benefits of adding an ADU—like increased property value and potential rental income—often outweigh these expenses. ADUs offer a versatile solution to modern housing challenges, enhancing the appeal and functionality of your property.

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Factors Affecting Cost

The cost of building an ADU can vary widely based on several factors:


The size of the ADU is one of the most significant cost drivers. Larger units require more materials and labor, increasing overall costs.


The choice of materials can significantly impact the cost. High-end materials will cost more but can enhance the overall value and aesthetic appeal of the ADU.


Permitting costs vary depending on the complexity of the project and local regulations.


Location within Calabasas can also affect costs due to variations in local building codes, land values, and accessibility.


The complexity of the design and construction, including custom features and finishes, can increase costs.

Cost Range: Based on these factors, ADU plans typically range from $5,000 to $15,000, depending on the project's complexity. Book a call with our ADU experts

Cost-Saving Tips

cost-saving for ADUs

Utilize Existing Structures

Converting a garage or basement into an ADU can save on construction costs.

OPT for Standard Plans

Using pre-designed plans can reduce architectural fees.

DIY Finishes

If you have the skills, consider doing some of the finishing work yourself to cut labor costs.

The ROI of ADUs

Increased Home Value

As mentioned earlier, ADUs can significantly boost your property’s value, making them a worthwhile investment.

Rental Income

An ADU can provide a steady stream of rental income, helping to offset the costs of construction and ongoing maintenance.

Overview of Different Neighborhoods in Calabasas

Calabasas Neighborhoods

The Oaks

A gated community known for its luxury homes and top-notch amenities, perfect for those seeking exclusivity.

Calabasas Park Estates

Offers beautiful views and a serene environment, ideal for families looking for a peaceful community.

Mountain View Estates

Known for its spacious lots and custom homes, providing ample space for an ADU.

Mulholland Heights

Offers stunning views and a convenient location, making it a desirable neighborhood for adding an ADU.

Calabasas Hills

A family-friendly community with excellent schools and parks, enhancing the appeal of properties with ADUs.


Investing in an ADU in Calabasas can be a wise decision, offering both immediate benefits like rental income and long-term advantages like increased property value. By working with Calabasas ADU Architects, you can ensure a smooth process from design to completion, maximizing the return on your investment.

By understanding the costs, process, and benefits of building an ADU, you can make an informed decision that enhances your property and meets your needs. Ready to get started? Book a call with our ADU experts today to begin your journey.

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Not sure where to start with your ADU project?


Not sure where to start with your ADU project?

Book a free call