San Diego County · Licensed General Contractor

Build with confidence. Build with Troia.

Licensed general contractor delivering ADUs, custom homes, remodels, and specialty trade packages across San Diego County and Orange County. From preconstruction planning through final inspection, every project gets direct owner involvement and transparent communication.

CA Contractors License #1151054
Licensed
CSLB #1151054
Owner-Run
On Every Project
San Diego
& Orange County
Free
Estimates
CA Licensed #1151054
Owner-Operated
Serving All of San Diego & OC
Free Estimates

Your San Diego General Contractor

Troia Construction is a licensed general contracting firm headquartered in La Jolla, California, led by owner and general contractor Robert Amarin. We specialize in accessory dwelling units, custom homes, major remodels, and specialty trade packages throughout San Diego County and Orange County.

What sets us apart is simple: Robert is on every job. No layers of project managers or subcontracted oversight. You get direct access to the person responsible for your build, from the first site walk through final inspection. That means faster decisions, tighter cost control, and craftsmanship that meets the standard we put our name behind.

Accessory Dwelling Units

ADU specialists with permit expertise

Unlock multi-generational living and rental income potential. We navigate zoning, setbacks, and utilities while fast-tracking plan reviews and field execution.

  • Feasibility, lot optimization, and cost modeling
  • Permit management across San Diego jurisdictions
  • Turnkey delivery with the owner present on site
Custom Homes & Remodels

Ground-up residences and transformative renovations

We orchestrate every discipline, from preconstruction budgeting to final punch lists, ensuring schedules hold and design intent is preserved.

  • Preconstruction planning, bidding, and procurement
  • Transparent cost controls and weekly reporting
  • Trade partner leadership focused on quality and safety
Specialty Trades

Targeted trade scopes with general contractor quality

Engage Troia for individual trades without sacrificing polish. Our teams deliver framing, foundations, roofing, siding, and envelope upgrades built to last.

  • Structural framing and seismic reinforcement
  • Concrete foundations, retaining walls, and slabs
  • High-performance roofing, siding, and waterproofing

Accessory dwelling units tailored to your property

ADUs deliver flexible living space, introduce rental income potential, and increase your property value. Our team manages every phase in-house so you receive direct guidance alongside meticulous field execution.

  • Garage conversions, attached ADUs, detached ADUs, and room additions
  • Rental-ready detailing with acoustic separation, durable finishes, and code compliance
  • Permitting, coastal overlays, and utility tie-ins handled start to finish

Garage Conversions

Transform existing structures into efficient living suites with upgraded insulation, plumbing, and finishes that feel purpose-built.

Attached ADUs

Seamlessly expand your main residence with connected suites that respect setbacks, energy codes, and architectural intent.

Detached ADUs

Create private stand-alone residences with separate utility metering, curated outdoor environments, and owner oversight on site.

Room Additions

Add strategic square footage that unlocks multi-generational living, guest suites, or hybrid work zones without leaving your property.

Why San Diego homeowners choose Troia

We combine the accountability of an owner-operated firm with the capabilities of a full-service general contractor. Every project gets direct leadership and transparent communication from start to finish.

Owner on Every Job

Strategic decisions are made on site with the people doing the work. No middlemen, no lag time, and no surprises. You always know who is responsible.

Coastal Performance

From materials to detailing, we engineer every element for San Diego's marine environment to prevent corrosion, leaks, and unnecessary maintenance.

Transparent Communication

Expect weekly updates, documented progress photography, and immediate answers whenever you call, text, or email.

Direct from the builder. No middleman markups.

Every project is run by the owner, combining cost transparency with field-first craftsmanship from day one.

No Middleman Markup

As an owner-operated builder with an in-house team, we eliminate the heavy markup that paper contractors add to your final price. You pay for the work, not layers of management.

Built By Real Builders

Deep, hands-on experience in framing, concrete, and structural work means we are true craftsmen, not just project managers behind a desk. We understand the work because we do the work.

Licensed & Accountable

California Contractors State License Board #1151054. Every project is backed by a licensed professional who stakes their reputation on delivering quality results.

Five steps from consultation to completion

  1. Initial Consultation & Site Assessment – Review project goals, site logistics, and jurisdictional requirements to align scope, budget, and timeline from the start.
  2. Custom Design & Planning – Coordinate architects, engineers, and trade partners to shape buildable drawings, schedules, and cost models.
  3. Permitting & Approvals – Prepare documentation, manage jurisdictional reviews, and secure approvals across coastal overlays and municipalities.
  4. Construction & Project Management – Self-perform structural trades while leading vetted partners to deliver on schedule with craftsmanship and safety.
  5. Final Inspection & Handover – Commission systems, document quality, and provide a thorough turnover package with warranties and maintenance guidance.
Free Estimates

Ready to start your project?

Call or email to receive a tailored proposal, transparent budget tracking, and direct communication with the owner from day one.

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