Services About Process Gallery Get a Quote →

Licensed General Contractor · San Diego, CA

Built with Precision. Finished Right.

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.

Request a Consultation Our Services

// Contractor Profile

Contractor Derek Bordonaro
License No. 972441
Specialty Residential
Service Area San Diego, CA
Status Active · Insured
100+
Projects Completed
20+
Years Experience
EST. 2012
San Diego, CA
5★
Client Satisfaction

What We Build

Residential Expertise

From the ground up or transforming what's already there — every project gets the same level of care, precision, and personal attention.

01

New Home Construction

Full ground-up residential builds designed around your vision. We manage every phase—from site prep and foundation to finishing touches.

02

Home Renovations

Major renovations that modernize and maximize the potential of your existing home, executed with minimal disruption to your daily life.

03

Kitchen & Bath Remodels

High-impact remodels of your kitchen and bathrooms—the rooms that define your home's feel and drive its value.

04

Additions & Expansions

Room additions, second-story builds, ADUs, and square footage expansions that blend seamlessly with your existing structure.

05

Outdoor Living Spaces

Decks, patios, pergolas, and outdoor structures built to the same standards as the home itself—durable, beautiful, and functional.

06

General Contracting

Full general contracting services: permits, subcontractor coordination, project management, and quality control from start to finish.

Est. 2012

Who We Are

A Builder Who Gets It Right

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

What Our Clients Say

“
★★★★★

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!

J

Jackie G.

Verified Review

How We Work

A Clear Process, No Surprises

Every project follows the same disciplined framework — transparent from day one and accountable at every milestone.

01

Consultation

We start with a free consultation to understand your goals, timeline, and budget.

02

Proposal

You receive a detailed, transparent written proposal—no vague estimates, no hidden costs.

03

Build

We manage every phase of construction with regular updates and open communication.

04

Handover

Final walkthrough, punch list completion, and full handover. We're not done until you're satisfied.

Let's Talk

Start Your Project Today

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

Email

derek@otm-construction.com

Service Area

San Diego, CA & Surrounding Areas

We typically respond within one business day.