A Guide to Estimating the Cost to Build a House in San Diego

By Sean Canning

Are you looking to build a house in San Diego and wondering how to estimate the potential construction costs of your project? Accurately estimating the cost of building a custom home or modern ADU is essential for planning your budget and ensuring the project's success.

In this blog post, we'll provide you with a step-by-step guide based on our approach at Ten Seventy Architecture to estimating the cost to build a house in San Diego. By following these steps, you will be able to apply this knowledge to your own construction project.

Exterior photo of a custom modern home in San Diego designed by Ten Seventy Architecture

Step 1: Understand the Home Building Design and Construction Process

It's important to understand that construction designs progress through a series of stages, from conceptual ideas to detailed construction drawings.

We use a proprietary four-phase process in our San Diego Architecture Studio, which has been refined through a decade of experience in designing, permitting, and building projects in the city. You can adopt a similar phased approach for your project, ensuring that you have a clear path from concept to completion to create an accurate budget for your custom home project.

Step 2: Price Per Square Foot Analysis

During the initial phases of the project, we estimate construction costs using a price-per-square-foot analysis.

To calculate this, simply multiply the project's square footage by the estimated cost per square foot. As the design progresses and becomes more detailed, you will be able to refine your cost estimates based on specific materials and construction techniques.

Step 3: Adjust for Current Market Conditions in San Diego

It's important to know that the home building cost in San Diego can vary significantly depending on factors like economic conditions and the current state of the construction industry.

For example, in 2021, we used a baseline cost of $250 per square foot for residential construction projects in San Diego. This figure reflects increased construction costs since 2019 when the estimate was $200 per square foot. Be sure to research current market conditions in San Diego and adjust your estimates accordingly.

Overall, it can be quite expensive to build in San Diego, but that is to be expected considering it is one of the best places to live in the US.

Step 4: Factor In Permitting Fees When Estimating Building Costs in San Diego

Remember that the cost per square foot estimate only covers the hard costs of construction, which do not include architectural or engineering fees or permit fees. At Ten Seventy Architecture, we advise our clients to factor in these additional costs when calculating their overall project budget.

For a more detailed explanation of what you can expect in regard to permitting + other project fees, check out this article.

Step 5: Consider the Level of Finish + Design Features For Your Custom Home

Your desired level of finish and design features will significantly impact the overall cost to build a luxury home or heavily renovate/remodel your existing house.  

For instance, a project aiming for publication in Architectural Digest or Dwell magazine will likely have a higher price per square foot due to the use of premium materials and more complex design elements. Be realistic about your expectations and budget when planning your project.

Step 6: Refine Your Building Cost Estimate with Material Costs

As your design moves from a conceptual stage to detailed construction drawings you can further refine your cost estimate by considering the specific materials and building techniques required for your project. This will help you transition from a price per square foot estimate to a more accurate material cost-based estimate.

Interior photo of a custom modern home in San Diego overlooking the bay with a balcony

So, What's the Average Cost to Build a House in San Diego?

Building a custom home in San Diego can be an exciting and rewarding experience, but it's crucial to have a clear understanding of the costs involved to ensure a successful project.

The average cost to build a custom home in San Diego will vary based on factors such as the size of the home, location, design features, and finishes.

As a general guideline, the average cost to build a custom home in San Diego can range from $250 to $400 per square foot or more, depending on the level of customization and quality of materials.

This means that for a 2,500 square foot custom home, you could expect to pay between $625,000 and $1,000,000 for construction alone. Keep in mind that this range is an estimate and can vary based on your specific project requirements.

At the lower end of the spectrum, you can expect a more basic level of customization and finishes, with the use of standard construction materials.

As you move towards the higher end of the cost range, you'll find more elaborate designs, premium materials, and unique architectural features that contribute to a truly one-of-a-kind custom home.

It's important to note that the cost per square foot only covers the hard costs of construction. In addition to this, you should budget for architectural and engineering fees, permit fees, and potential costs for site preparation and utilities. These additional expenses can vary depending on the complexity of your project and local regulations.

At Ten Seventy Architecture, we work closely with our clients to provide a detailed and accurate cost estimate for their custom home projects in San Diego. By understanding your vision, needs, and budget, we can help guide you through the process of building your dream custom home while keeping costs under control.

We're happy to help you develop multiple budget estimates for your custom home building project. If you want to know exactly what it will take to build a custom me in San Diego County or the City itself, click here to book a free consultation.

Ready To Build a Custom Home in San Diego?

At Ten Seventy Architecture, we work with adventurous clients who love modern architecture to help them make their dream a reality.

We offer free consultations, both virtually and in our North Park office, to help you plan and estimate the costs of your custom home project. During your consultation, you will get to speak directly with the owner of the studio Sean Canning to discuss your ideas, needs, and preferences when it comes to building a home.

By taking advantage of our free consultation service, you'll gain a better understanding of the steps involved in building a custom home in San Diego and receive personalized advice tailored to your project.

Our team of dedicated professionals is committed to working closely with you throughout the entire process, from initial concept to completion, ensuring your custom home is designed and built to the highest standards. Don't hesitate to contact us to schedule your free consultation and embark on the exciting journey of building your dream home in San Diego. Just click here to schedule a free consultation!

Custom home remodel designed by Ten Seventy Architecture

Frequently Asked Questions

What Is the Initial Step in Estimating the Cost To Build a House in San Diego?

The first step is to understand the design and construction process. At Ten Seventy Architecture, we employ a proprietary four-phase process, allowing for a clear path from concept to completion. This understanding helps you create an accurate budget for your custom home project.

How Do You Calculate the Initial Construction Cost Estimate?

During the initial phases, construction costs are estimated using a price-per-square-foot analysis. This involves multiplying the projected square footage of your home by the estimated cost per square foot, which can be adjusted as the design progresses.

What Factors Influence the Cost of Building a House in San Diego?

The cost of building in San Diego can vary significantly based on economic conditions, construction industry trends, and specific project details. Historical data from 2021 suggested a baseline cost of $250-300 per square foot, reflecting an increase from previous years.

What Additional Costs Should Be Considered in the Construction Budget?

Besides the hard costs of construction, it’s crucial to include architectural or engineering fees and permit fees in your budget. These are essential for completing your project legally and to specification.

How Does the Choice of Finishes and Design Features Affect the Construction Cost?

The level of finish and design features significantly impacts the overall cost. Higher-end finishes and complex design elements increase the price per square foot, especially if aiming for a luxury home featured in publications like Architectural Digest.

Can Construction Costs Exceed the Floor Area Ratio (FAR) Limits in San Diego?

Yes, an ADU can extend past the maximum FAR by up to 800 square feet. This flexibility allows property development even when the main building has maximized its allowable floor area, offering more room for creative design and functionality.

What Are the Expected Costs for Architectural and Engineering Services in San Diego?

Costs for architectural designs range between $10,000 and $20,000, with structural engineering costs varying from $2,500 to $7,500. These services ensure that your project adheres to local building codes and regulations.

How Long Does the Construction and Permitting Process Take in San Diego?

The permitting process alone can take over four months, with construction timelines varying based on factors like contractor efficiency and material availability. Overall, from design to completion, the process can last several months to over a year, depending on the scope and complexity of the project.

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