Room additions and ADUs (including JADUs) are the perfect way to increase your home’s space, improve comfort, and raise long-term property value. These additions create new living areas, private rentals, guest rooms, or workspaces without needing to move. With thoughtful planning and professional design, the project becomes organized and stress-free.
Carmel Valley homes often feature modern layouts, family-oriented designs, and upscale architectural elements. Whether you want to extend your living room or build a detached ADU, we design expansions that blend seamlessly with your property.
We bring strong architectural expertise, clean project organization, and reliable communication. Residents trust us for precise, well-designed addition and ADU plans built for modern Carmel Valley homes.
We discuss your ideas, assess your home’s structure, and prepare a clear plan that fits your needs and budget.
Our team creates precise floor plans, engineered layouts, and 3D visuals that match Carmel Valley’s modern style and your layout requirements.
We finalize all documents, ensure compliance with local ADU/JADU codes, and prepare everything for a smooth construction phase.
At Golden Shore Design and Build, we don’t just renovate Houses — we transform them into functional, beautiful spaces tailored to your lifestyle. Here’s why so many homeowners trust us with their Home remodels:
Realistic previews that help you visualize new rooms and layouts.
Accurate elevations, dimensions, and layouts for a seamless build.
Code-compliant calculations and framing plans to ensure safety and strength.
Complete planning for lighting, wiring, plumbing, HVAC, and systems.
Fully detailed plans created to speed up review and approval.
We recently finished a complete kitchen renovation and are very satisfied with our construction and renovation firm. From the initial design consultation through to the final walk-through, the staff at this company displayed a remarkable level of professionalism and knowledge. Our project manager kept us fully apprised of the progress through daily updates and was very responsive to all of our inquiries. The staff were very considerate, on time, and maintained a remarkably clean construction site, causing little disruption to our daily routine. The workmanship is of the highest quality, and they completed the project right on time and within the agreed-upon budget with no surprises.
Professional builders providing neat finishes and smooth project coordination.
The remodel on our place included a few tricky parts but this team knew exactly what they were doing. Their design sense made the layout flow better than it ever has. It feels like a real upgrade in terms of value.
I brought them in for a full home remodel and the whole experience felt smooth and straightforward. Their design ideas actually made the renovation feel exciting instead of stressful. You can tell the builders care about a quality build from start to finish.
I hired them for a residential remodel, and I’m blown away by the results. The design process was smooth and collaborative, which made the whole project stress-free. These guys really know how to deliver a great renovation.
My bathroom and kitchen renovation turned out strong across the board. Their remodel contractor kept communication easy and never made things confusing. The quality build shows and the place feels refreshed in the best way.
I had this business remodel two bathrooms and both turned out perfect. They made sure I was comfortable while the work was being done. The results speak for themselves.
Their team was thorough, explaining the issue and the best solution without pushing unnecessary work. The repair was done on time, and our home feels solid again highly recommend their expertise!
I recently hired Golden Shore Design and Build to paint my kitchen cabinets, and I couldn’t be happier with the results! From start to finish the team was professional, punctual, and incredibly detail-oriented. They took the time to explain the process, offered helpful color suggestion, and made sure every step was done right.
The transformation is amazing – my kitchen looks brand new! The finish is smooth and flawless, and they left everything clean and tidy once the job was done. I really appreciated their respect for my home and the care they put into their work.
If you’re considering giving your cabinets a fresh new look, I highly recommend Golden Shore Design and Build. They exceeded my expectations, and I’d gladly work with them again.
CG Escondido
We added a family room to the back of our house and this team handled everything from permits to finish work. They made sure the new space blended perfectly with the existing structure. Super happy with the result and the process.
We deliver full planning, engineering, and 3D design services customized for Carmel Valley’s property styles. Reach out today to schedule your free consultation.
The cost comparison between adding an addition and building an Accessory Dwelling Unit (ADU) is complex and depends heavily on your specific property and goals. Generally, a simple bump-out addition can be less expensive per square foot as it often utilizes existing home systems. However, a detached ADU, while potentially having a higher upfront cost for new foundations and utilities, creates a fully independent asset that can generate rental income, significantly offsetting the investment. Key factors include site conditions, utility connections, and local permit fees. For a detailed breakdown of costs, benefits, and planning considerations, we recommend our internal resource All You Need to Know When Building Accessory Dwelling Units.
The cost comparison between building an ADU (Accessory Dwelling Unit) and buying a prefab unit depends heavily on project specifics, but prefab options often have a lower initial price point. A traditional stick-built ADU provides maximum customization but involves higher labor costs, potential delays, and site work expenses. A prefabricated ADU, constructed in a factory, typically offers faster installation and more predictable pricing due to controlled manufacturing. However, total cost for either includes site preparation, foundation, utility connections, permits, and finishing. For a straightforward installation on a suitable lot, a prefab ADU can be more cost-effective. For complex sites or highly customized designs, a traditional build might be necessary despite a potentially higher budget.
A common mistake when building an Accessory Dwelling Unit (ADU) is not thoroughly understanding local zoning ordinances and building codes before starting, which can lead to costly redesigns or permit denials. Another frequent error is underestimating the total budget, failing to account for site preparation, utility connections, and finishing costs. Homeowners also often overlook the importance of professional design that maximizes the small footprint for both function and compliance. To avoid these pitfalls, comprehensive planning is essential. For a complete guide, see our internal resource, All You Need to Know When Building Accessory Dwelling Units, which details every step from feasibility to final inspection.
The primary new ADU law for California in 2025 is Assembly Bill 1033, which takes effect on January 1, 2025. This groundbreaking legislation allows for the separate sale or conveyance of an Accessory Dwelling Unit from the primary residence, effectively creating condominium-style ownership. This means homeowners can build an ADU and sell it independently, potentially making ADU construction more financially accessible. The law is optional for cities and counties; local agencies must pass an ordinance to permit this subdivision. It also mandates specific agreements for shared utilities, maintenance, and common areas. This change aims to significantly increase homeownership opportunities and add to the state's housing stock.
Building an Accessory Dwelling Unit (ADU) in Carmel Valley involves several cost factors. The price for a room addition or ADU construction typically ranges from $200,000 to $500,000 or more, depending on size, design, and site conditions. Key expenses include architectural design, permitting with the City of San Diego, foundation work, materials, plumbing, electrical, and finishing. Carmel Valley's specific zoning regulations and potential geotechnical reports for hillside lots can add to costs. It is crucial to hire a licensed, insured design-build firm experienced with local codes to ensure a smooth process and avoid costly delays. Always obtain multiple detailed bids and ensure your contract clearly outlines the project scope, timeline, and payment schedule.
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