My name is Seán Donovan, and I am the owner and master plumber behind JSD Contracting LLC. I bring over two decades of international expertise in plumbing, heating, and residential remodeling directly to your home.
Originally from Dublin, Ireland, and now based in Longmont, Colorado, I provide a premium, personalized plumbing service across the Greater Denver Area. When you hire JSD Contracting LLC, you get my undivided attention—I do not use random subcontractors or hands-off managers. From the initial consultation to the final cleanup, you work directly with me. Every project I accept is backed by formal technical training and a strict commitment to meticulous detail, transparent pricing, and reliable timelines.
Quality Craftsmanship, Trusted Expertise
Verified Client Testimonials
“I can’t recommend JSD enough. Professional, timely and the highest standards and quality of work. Get them booked asap!”
- Luke Carlyle ★★★★★
“Sean was fantastic! He helped fix a leaky shower head quickly and efficiently, saving me from what could have turned into a much more expensive repair down the line. I really appreciated his transparency throughout the process—he explained everything clearly and didn’t try to upsell anything unnecessary. His work ethic, honesty, and professionalism truly stood out. Highly recommend Sean if you’re looking for a trustworthy and skilled plumber!”
- Shunnie Chen ★★★★★
“Sean completed a very complex and extensive old town remodel for me. He not only carried out planned work but really brought his A game partnering with us to conquer even the toughest, unexpected challenges that arose. I would recommend him 1000 %”
- Chris Mills ★★★★★
Let’s Discuss Your Next Project
Whether you need a complete residential remodel, a heating system upgrade, or an expert plumbing solution, I am ready to help bring your vision to life. Please fill out the brief form below with your project details, and I will personally get back to you within 24 business hours to discuss the next steps.