About Cosello Construction
Family-owned and Andersen-certified since 2003. We've built our reputation on quality craftsmanship, honest pricing, and treating every home like our own.
Our Story
Two Decades of Building Trust, One Window at a Time
Cosello Construction Inc started in 2003 with a simple idea: homeowners in South Jersey deserved a window and door company they could actually trust. No high-pressure sales tactics. No inflated prices. Just honest work, quality products, and a team that shows up on time and cleans up when they leave.
Over two decades later, that founding principle hasn't changed. We've grown from a small local crew into one of the Tri-State area's most respected installation companies — serving thousands of homeowners and businesses across New Jersey, Philadelphia, and Delaware.
Today, we're proud to be an Andersen-certified contractor with a team of technicians who each bring 10 to 20 years of experience to your project. We handle everything from single window replacements to full commercial buildouts, and we back every job with our 2-year labor warranty.
20+
Years in Business
3
States Served
10-20
Years Tech Experience
2 Yr
Labor Warranty
What Sets Us Apart
Why Choose Cosello Constructions
Andersen Certified
We hold Andersen certification — a mark of excellence in window and door installation that fewer than 5% of contractors achieve.
Licensed & Insured
Fully licensed and insured across New Jersey, Pennsylvania, and Delaware. Your home and investment are always protected.
20+ Years Experience
Founded in 2003, we bring over two decades of expertise to every residential and commercial project we take on.
Experienced Technicians
Every member of our installation team has 10–20 years of hands-on experience. No subcontractors, no shortcuts.
2-Year Labor Warranty
We stand behind our work with a comprehensive 2-year labor warranty on every installation we complete.
Family Owned & Local
We're not a franchise or national chain. We're a local, family-owned business that genuinely cares about our community.
Our Journey
20+ Years of Milestones
Cosello Construction Inc founded in South Jersey
Expanded into the Philadelphia market
Earned Andersen Certified Contractor status
Launched commercial window & door division
Added Delaware to our service area
Celebrated 20 years serving the Tri-State area
Work With South Jersey's Trusted Team
Get a free quote from our experienced crew. We'll treat your home like it's our own.