
A development and construction advisory firm. One accountable team from site origination through operations handover.
Founded in 2023 by Michael Cosgrave, a third-generation developer, Glenart partners with owners and developers to deliver complex projects from site selection through to steady-state operations. With over 2,000 residential units in Ireland, a strong US commercial real estate portfolio, and 2.4 million square feet of large-scale infrastructure delivered and under management, the firm operates at the leading edge of development.
Our leadership brings cradle-to-grave discipline across every asset class, with a pipeline that reflects the breadth of our capability and the confidence our clients place in us.
Every Glenart engagement is led by experienced professionals who have delivered at scale.

A third-generation developer, Michael founded Glenart Group in 2023. With over a decade of experience across development and construction in the US and Europe, Michael brings a unique global perspective to complex projects. His expertise spans the full development lifecycle, from site selection and entitlements through financing, construction delivery and commercial management across residential, commercial, and large-scale infrastructure projects on both sides of the Atlantic.

20+ years of experience in data center strategy, design, construction, and operations. Former Global Director at a leading financial institution overseeing mission-critical data centers globally on projects exceeding $100M. Background in electrical engineering and project management.

21 years of experience delivering high-value developments, including mission-critical data center and commercial projects. He combines strategic business development expertise with deep technical knowledge to drive growth, client satisfaction, and operational excellence. Known for leading complex projects from inception to completion, Liam ensures quality, safety, and performance on every engagement.
15 years of commercial construction management experience delivering complex, high-value projects exceeding $600M. Has led mission-critical data center developments up to 120MW, consistently meeting aggressive timelines and budget targets. Expertise spans project controls, risk management, and regulatory navigation across multiple US jurisdictions.
Leads Glenart's technology and software development, building the proprietary platforms that power the firm's operations — from AI-assisted document generation to project reporting and data center development workflows.
We operate as a partner, not a vendor. When Glenart engages on a project, we become part of our client's team and take ownership of the development delivery process. We don't produce reports and walk away - we manage the project as if it were our own.
We approach everything with a developer’s mindset. Our senior team has built and operated complex projects - not just advised on them. That shapes how we think about risk, schedule, cost, and stakeholder management at every stage.
Most firms specialise in a phase. We’ve executed across all of them - site origination, land development, due diligence, permitting, design, construction, commissioning, and operations handover. No handoffs between firms, no loss of context, no gaps where problems hide.
We don’t lead with technology, we lead with experience. Using AI and proprietary software to accelerate site analysis, generate operational documentation, and improve project controls. The tech makes us faster and more consistent. The experience is what makes us right.
We take on projects we can deliver. That means a selective client roster, senior involvement on every engagement, and a track record we’re willing to put our name on.
Tell us about your project and timeline. We move fast.