Building with Confidence.
Commercial & Residential
CA. 1149941
CORE Commitment to Excellence.
With over 20 years of combined experiences in the construction industry, I’ve built my career on a foundation of technical expertise, strategic leadership, and an unwavering commitment to exceptional customer service.
My journey began in the trades, where I developed a deep understanding of quality craftsmanship and attention to detail. Over the years, I advanced into account management and senior leadership roles, serving as Director of a transportation company and successfully opening and managing a large company branch in Southern California. Most recently, I held the position of Chief Operating Officer at a design build construction company, where I refined my ability to deliver outstanding results for discerning clients who expect nothing but the best.
These experiences taught me that true excellence in construction goes far beyond technical skill—it’s about listening to clients, anticipating their needs, and executing every project with precision, integrity, and care. Driven by this belief and a passion for raising the standard of service in the industry, I founded Core Build Group, Inc. and Core Paintworks.
Today, through Core Build Group and Core Paintworks, I bring the highest level of professionalism, unparalleled attention to detail, and personalized customer experience to clients across both Northern and Southern California. Whether it’s a commercial, complex build, a luxury remodel, or premium painting and finishing work, my team and I are committed to delivering results that exceed expectations—every time.
I look forward to the opportunity to partner with you on your next project and to create spaces that truly reflect your vision.
Hector Mancera
Founder/President
Residential and Commercial Design & Build Services.
At Core Build Group, Inc., we deliver exceptional design and build services for both residential and commercial projects across Northern and Southern California. With over 20 years of industry experience — from hands-on trade work to senior leadership as a COO in luxury construction — we combine technical expertise, strategic project management, and an uncompromising commitment to quality.
Whether you’re envisioning a custom home, a sophisticated remodel, a high-end tenant improvement, or a complete commercial build-out, our team provides end-to-end solutions tailored to your unique needs. From initial concept and design through permitting, construction, and final finishes, we manage every detail with precision and care.
What sets us apart:
Unparalleled Attention to Detail — Every project receives the same meticulous craftsmanship and luxury-level finishing that our clients expect.
Highest Level of Customer Experience — Clear communication, transparent timelines, and proactive problem-solving ensure a stress-free process from start to finish.
Integrated Expertise — Our in-house capabilities include premium painting and custom finishes through Core Paintworks, allowing us to control quality and aesthetics at every stage.
Regional Strength — Deep knowledge of Northern and Southern California markets, regulations, and subcontractor networks ensures efficient, code-compliant execution.
We specialize in creating spaces that are not only beautifully designed and expertly built but also functionally superior and built to last. Our goal is simple: to exceed your expectations and deliver results that reflect the highest standards in the industry.
Ready to bring your vision to life? Contact us today to discuss your residential or commercial project.
