Licensed General Contractor · San Diego, CA
With over 20 years of hands-on experience, On the Mark Construction delivers residential builds you can count on — from full renovations to new construction. We combine deep industry knowledge with a commitment to reliability, transparency, and craftsmanship that stands the test of time. When we take on a project, we see it through.
// Contractor Profile
What We Build
From the ground up or transforming what's already there — every project gets the same level of care, precision, and personal attention.
Full ground-up residential builds designed around your vision. We manage every phase—from site prep and foundation to finishing touches.
Major renovations that modernize and maximize the potential of your existing home, executed with minimal disruption to your daily life.
High-impact remodels of your kitchen and bathrooms—the rooms that define your home's feel and drive its value.
Room additions, second-story builds, ADUs, and square footage expansions that blend seamlessly with your existing structure.
Decks, patios, pergolas, and outdoor structures built to the same standards as the home itself—durable, beautiful, and functional.
Full general contracting services: permits, subcontractor coordination, project management, and quality control from start to finish.
Who We Are
On the Mark Construction was built on a simple belief: residential construction should be done with honesty, skill, and accountability. No shortcuts. No surprises. Just solid work you can live in for decades.
Founded in 2012, the company draws on Derek's 20+ years of hands-on industry experience spanning everything from ground-up builds to complex renovations throughout the San Diego area.
When you hire On the Mark, you're not handed off to a project manager you'll never see. You're working directly with Derek, every step of the way.
General Contractor
Derek Bordonaro
License No. 972441 · San Diego, CA
Client Reviews
Derek was a lifesaver after a second‑floor bathroom leak caused major damage to our first‑floor kitchen. He quickly fixed the source of the problem by rerouting the pipes so it wouldn't happen again, then fully repaired the kitchen — all within a week. Derek was very communicative, friendly, and trustworthy, and he was upfront about both cost and timing. The project was finished on time and within budget. Highly recommend!
How We Work
Every project follows the same disciplined framework — transparent from day one and accountable at every milestone.
We start with a free consultation to understand your goals, timeline, and budget.
You receive a detailed, transparent written proposal—no vague estimates, no hidden costs.
We manage every phase of construction with regular updates and open communication.
Final walkthrough, punch list completion, and full handover. We're not done until you're satisfied.
Our Work
A selection of completed residential projects across San Diego. Every job finished on time, on budget, and built to last.
Kitchen Remodel
Dark granite counters, white shaker cabinetry, and hardwood floors.
Kitchen Remodel
White shaker cabinets with quartz waterfall island and open floor plan.
Kitchen Remodel
Walnut cabinetry with marble countertops and porcelain tile flooring.
Kitchen Remodel
Custom dark green island with marble countertop and wide-plank hardwood floors.
Hillside Deck Build
Custom hardwood deck on a San Diego hillside — post/beam structure to finished surface.
Full Bathroom Remodel
Complete gut-to-finish renovation including slab excavation, new plumbing, and custom tile work.
Full Kitchen Renovation
Complete kitchen rebuild — demo through custom cabinetry, quartz countertops and hardwood floors.
Let's Talk
Ready to build or renovate? Reach out for a free, no-obligation consultation. We'll walk through your vision and give you an honest assessment of how to make it happen.
Phone
(619) 405-1014
derek@otm-construction.com
Service Area
San Diego, CA & Surrounding Areas