How much does ADUs really cost?

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Thinking about boosting your property's value and versatility with an ADU? It’s a smart move in today’s real estate landscape. Whether you’re eyeing a prefab model or dreaming of a custom site-built suite, every ADU journey starts with understanding the costs involved. Let's dive into the numbers without sugarcoating the facts.

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Prefab ADUs: Fixed Design But Wallet-Friendly

Prefab ADUs are like the ready-to-assemble furniture of real estate: efficient, economical, and increasingly popular. Costs hover between $100,000 and $350,000, offering a streamlined path to expanding your living space without the drama of traditional construction.

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Site-Built ADUs: Custom But Costly

For those with specific visions, site-built ADUs offer the flexibility to tailor every nook and cranny to your liking, with costs ranging from $150,000 to $400,000. Customization comes at a premium, but for many, the ability to personalize every detail is worth every penny.

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Detached and Attached ADUs

• Detached ADUs stand alone, offering privacy but often requiring a heftier investment for independent utilities and construction, driving up costs.
• Attached ADUs share a wall (and sometimes utilities) with your main house, potentially trimming expenses thanks to the shared infrastructure.

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Costs of ADUs by Size:

• 500 sq ft ADU: Compact and efficient, setting you back $50,000 to $150,000.
• 1,200 sq ft ADU: A spacious haven with a price tag of $120,000 to $300,000.

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ADU Cost Breakdown: The Nitty-Gritty

Understanding where your money goes in an ADU project is crucial. Here's a rough breakdown of how costs typically distribute across a project:

• Construction and Materials: 50-60% of the total budget. This includes everything from lumber to lighting fixtures.
• Labor: 30-40%. Skilled trades aren’t cheap, but they’re worth every dime for a job well done.
• Design and Engineering: 10-15%. Good design pays off in functionality and aesthetics.
• Permits and Fees: 5-10%. Varies widely by location but essential for a legal and compliant ADU.

For a deeper dive into construction costs, this study by the Terner Center offers a treasure trove of data and insights.

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The median statewide construction cost of an ADU is $150,000, or $250/square foot (sf)

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ADU Investment Strategy: Closing Thoughts

Embarking on an ADU project isn’t just about adding space; it’s about smartly investing in your property’s future. With a clear picture of the costs—from the broad strokes to the detailed expenses—you're set to make informed decisions every step of the way. Remember, the initial cost assessment is more than just a formality; it’s a roadmap to a successful ADU project, guiding you from dream to reality without the financial fog.

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There you have it—a straightforward look at the financial landscape of building an ADU. With these insights, you're well-equipped to chart a course to your ideal addition, balancing dreams with budgets. Ready to take the next step? Get started with a Dwellito Specialist today.

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