"Pedro is a very professional Structural Engineer. Very knowledgeable."

"Dave was absolutely great to work with. This is the first time for us to build a house. We met with Dave at our lot, which has quite a challenging slope, and immediately liked him. We gave him an idea of what kind of house we wanted and he ran with it. He has great ideas and imagination when starting from scratch. He was very patient with us as we made changes to the original plans. Even more important, he was straightforward when an idea of ours just couldn’t work and he explained why in layman’s terms. Likewise, he was forthright when comparing different ideas with cost in mind. When it was all said and done, we got fantastic plans for the exact house we wanted and we are very excited to see it completed. His price was very reasonable and more cost effective than a couple other designers we checked with. We HIGHLY recommend Dave O’Brien to anyone wanting to design/build a custom home."

"It went flawlessly. From the initial meeting to the estimate , everything was completed as discussed."

"Great people to work with from the owner to the designers."

"I am general contractor They did three different job for me. Their work was good. The price was reasonable and on time."

"I hired them to create plans for an apartment building. The process was quick and painless. Cost was good. The plans are full complete abd ready to take to builders for quotes. I will definitly use them again."

We have a single mission: Complete Customer Satisfaction! We have consistently focused on the needs of our customers, providing personalized attention and a stress-free experience.\nYou will find us to be competitively priced with close attention to the details.\nOur reputation is based on service, safety, and quality, regardless of how large or small the job.\nWe look forward to building a lasting relationship and guarantee your satisfaction!\n

"They need some time to come back to the home and walk you thru the drawing"

Grupe dZn is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests and make their concerns the basis of our business.

We’re a family owned and operated company that values honesty and integrity, and stands behind our work. We offer over 40 years of industry experience. We specialize in Asphalt Shingle Roofing installation, replacement, and repairs. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We look forward to building long-term relationships with our clients and guarantee your satisfaction!