Why Garage Conversion ADUs Are Gaining Popularity

If you’ve got a garage you don’t really use (we see you, storage overflow and dusty gym equipment), you’re sitting on untapped potential.

✅ Cost-Effective: A garage conversion is typically the cheapest way to build an ADU, since you’re working with an existing structure. You already have a foundation, walls, and a roof—three of the most expensive parts of any build.

✅ Quick Turnaround: With fewer structural challenges, garage ADUs can often be completed in less time than new builds, meaning you can start using (or renting) the space sooner.

✅ Add Square Footage Without Expanding the Footprint: This is a big win for homes with limited yard space. You’re turning dead space into livable square footage, which is a direct boost to home equity.

✅ Rental Income Potential: A fully converted garage can become a high-demand rental unit in San Diego’s tight housing market—especially in areas like Chula Vista, North Park, and La Mesa.

Above-Garage ADUs: An Overlooked Alternative

Now here’s a twist: if you still want to keep your garage, or if your home is located on a slope or narrow lot, building above your garage might be the better option.

🏗️ Keep Parking + Add Living Space: An above-garage ADU lets you have your cake and eat it too—preserving your garage for vehicles or storage while adding a fully functional unit upstairs.

💼 Ideal for Working Professionals or Extended Family: With added separation from the main house, above-garage ADUs feel more private—making them great for in-laws, guests, or even a dedicated home office.

💲 Higher Cost, Bigger Return? Yes, they’re generally more expensive to build than a garage conversion (think structural reinforcement and stairs), but they often fetch higher rental income and increase your home’s appraisal value significantly.

Which One’s Right for You?

It depends on your goals, budget, and lifestyle:

If you’re unsure, our team at JT & Brothers Construction can walk you through both options, assess your space, and provide a clear plan that aligns with your vision and budget.

Final Thoughts

Whether you're looking to create a rental unit, guest suite, or bonus living space, your garage may be one of the smartest places to start. And if you’d prefer to build upward, we’ve got the tools (and scaffolding) to make that happen too.

Want to explore your ADU options?

Let’s talk. We offer free consultations to help San Diego homeowners turn underused spaces into beautiful, functional living areas.

📞 Call today or contact us online to get started!