Step 01
Foundation
Site prep, utility rough-ins, and a level concrete slab built for coastal conditions.
ADU Construction
Backyard ADUs in Del Mar& North County
Planning an accessory dwelling unit in Del Mar or nearby coastal communities? MA Properties builds ADUs from the ground up — foundation, framing, weather-tight shell, and finished exterior — with licensed craftsmanship and clear communication throughout.
Extra space, built to last
Whether you need a guest house, rental unit, or space for family, we manage the build so the new structure fits your property and holds up near the coast. Start with a consultation — many estimates are informed by on-site 3D scanning.
- New ADUs and backyard guest houses
- Owner Gustavo Mello on every major phase
- Written estimates grounded in on-site review
- Serving Del Mar, Encinitas, Solana Beach, Cardiff & Rancho Santa Fe
How we build
A clear process
From first pour to final finishes — the same sequence we used on our Del Mar backyard ADU.
Step 02
Framing
Structural walls, roof, and openings laid out for living space, light, and flow.
Step 03
Weather-tight shell
Barrier, roofing, windows, and doors so the unit is sealed before finishes begin.
Step 04
Finish & site work
Siding, trim, porch, and hardscape — a complete backyard cottage ready to use.
ADUs for coastal properties
Materials, drainage, and detailing matter near the ocean. We build for longevity — then hand you a finished unit ready for guests, family, or rental income.
Service areas
ADU construction in Del Mar, Encinitas, Solana Beach, Cardiff-by-the-Sea, and Rancho Santa Fe. Call (858) 361-2044 to schedule a consultation. More answers on our FAQ.
ADU FAQ
Common questions
What is an ADU?
An accessory dwelling unit is a secondary living space on the same property as your main home — often a backyard cottage used for guests, family, or rental income.
How long does an ADU take?
Timeline depends on permits, site conditions, size, and finishes. After an on-site consultation we outline a realistic schedule in your written proposal.
How much does an ADU cost?
Cost varies by size, finishes, utilities, and lot conditions. We do not publish flat online pricing — you receive a written estimate after we review your property.
Where do you build ADUs?
Del Mar, Encinitas, Solana Beach, Cardiff-by-the-Sea, and Rancho Santa Fe — with owner Gustavo Mello involved through major phases of the build.