Hello, my name is David Gianni
At Allied Construction Company, we are a privately held, full service engineering and construction firm built on one core belief: every project deserves precision, no matter the size. From urban backyards to rural estates, we tackle the jobs others overlook delivering swift, high-quality solutions at fair prices.
About MeOur mission is to bring expert engineering and construction services to the neighborhoods and properties that larger firms leave behind. We specialize in the essential projects, the ones that can’t wait for the “big builds” to finish. From tight access excavations to code compliant fire systems, we fill the gap with craftsmanship, speed, and transparency. Your challenge is our next job done right.
Whether it’s a narrow city lot or a sloped hillside, we bring heavy-duty excavation down to a science. Using compact equipment and GPS guided grading, we prep foundations, install drainage, and shape land with minimal disruption.
Safety isn’t optional. We design and install fully compliant fire alarms, sprinklers, and suppression systems for homes, offices, and commercial buildings. From initial layout to final inspection, we ensure your property is protected.
Strength starts with structure. Our in house steelwork and framing crews erect load-bearing beams, and wood/metal stud systems with millimetric accuracy. Built to last, inspected to code we frame the future of your build.
With over 15 years of boots-on-the-ground experience, Allied Construction has completed 100+ projects across residential, commercial, and municipal sectors. We’ve trenched under historic brownstones, retrofitted sprinkler systems in high rise condos, landscaped rooftop gardens, and framed custom steel structures for local businesses.
Over 100+ projects completed privately and in collaboration.
Gaining experienced in the construction field for over 15 years.
We trusted them with our 42 unit town home development everything from underground utilities and deep foundation work to plumbing rough ins, electrical, and full fire suppression. The insulation and drywall finish was so clean, our painter said it was the best prep he’d seen in 20 years. Professional, clean, and genuinely proud of their work.
Owner, Guedes Family Estates
We brought them in for a full site build out: excavation, structural steel, framing, and all MEP trades. From the first cut to final inspection, their coordination was flawless. The fire sprinkler and alarm integration passed NFPA review on the first submission that never happens. They even handled the landscaping and exterior insulation without missing a beat. On time, under budget, zero change orders.
Project Manager, Oakridge Commercial Park
We needed a turnkey retrofit: new structural steel reinforcement, full electrical rewire, plumbing upgrades, and a complete fire alarm + sprinkler overhaul. They managed 29 subcontractors without a single delay. The steelwork was laser-straight, and their insulation crew sealed every penetration like it was a cleanroom.
Facilities Director, Mayberry Industrial Complex
