Milan's Office Rents Surge 14% as Green Renovation Reshapes Corporate Real Estate

Covivio and Maire S.p.A. have locked in a lease extension spanning more than two decades for the iconic Garibaldi Complex towers in Milan, a deal that includes a 14% rent increase and a comprehensive green renovation aimed at achieving the highest sustainability certification available. For businesses operating in Italy's commercial real estate market, this signals both rising premium office costs and a hardening expectation that corporate headquarters meet rigorous environmental standards.

Why This Matters

• Rent trajectory: The like-for-like 14% increase reflects tight supply in Milan's prime office districts and sets a benchmark for corporate lease negotiations.

• Timeline for disruption: Major refurbishment work is scheduled to begin in 2028, meaning tenants and service providers should anticipate construction logistics in the Garibaldi area.

• Sustainability mandate: The push for LEED Platinum certification underscores regulatory and investor pressure on Italian companies to decarbonize real estate portfolios by decade's end.

The Financial Architecture

Maire, the Italian engineering conglomerate, currently occupies approximately 33,500 square meters within the Garibaldi Complex—representing 84% of the property's total leasable space. The company has been a tenant since 2010, and the new agreement extends that relationship well into the 2040s. For Covivio, the Paris-listed real estate group with significant Italian holdings, the renegotiation consolidates a flagship asset and boosts income: the group reported strong rental performance on its Italian portfolio, with the Garibaldi property maintaining a 95.4% occupancy rate.

The rent uplift—14% on a like-for-like basis—will take effect alongside the renovations. Industry observers note that Milan's Porta Garibaldi and Porta Nuova districts have seen sustained rental growth since 2020, driven by limited Grade A supply and persistent demand from multinational headquarters and domestic champions seeking ESG-compliant workspace.

The Green Renovation Blueprint

Starting in 2028, Covivio will lead a multi-year refurbishment program designed to slash the towers' energy consumption and operating expenses. The intervention focuses on three pillars: installation of renewable energy systems (including rooftop photovoltaic arrays and geothermal loops), replacement of aging HVAC infrastructure with high-efficiency units, and façade upgrades to improve thermal performance.

The target is LEED Platinum certification under the U.S. Green Building Council's rating system—the most stringent tier, requiring near-zero waste, advanced indoor air quality, and documented reductions in carbon intensity. Only a handful of Italian office buildings currently hold Platinum status, including Covivio's own Wellio tower on Via dell'Unione and portions of the Symbiosis business park.

For Maire, the renovations align directly with the company's public commitment to reach carbon neutrality for Scope 1 and Scope 2 emissions by 2029—a target it accelerated from the original 2030 deadline. Maire's emissions footprint in 2024 stood at roughly 15,667 metric tons of CO₂ equivalent for direct and purchased-energy emissions; upgrading its headquarters' energy infrastructure represents one of the most visible steps toward that goal.

What This Means for Residents and Businesses

Rental costs and lease benchmarks: The Garibaldi deal establishes a new pricing floor for premium office space in Milan's northern business corridor. Smaller tenants renewing leases in Porta Nuova, Isola, or nearby Lambrate should anticipate upward pressure, particularly for buildings that have completed or are planning sustainability upgrades.

Construction and mobility: Expect phased construction activity around Piazza Sigmund Freud from 2028 onward. While Covivio has pledged "full operational continuity" for Maire's activities, surrounding streets may see intermittent closures for façade work, equipment deliveries, and utility tie-ins. Commuters using the Garibaldi rail hub—one of Milan's busiest interchanges—should monitor municipal advisories.

ESG compliance wave: Maire's commitment to LEED Platinum is part of a broader pattern. Italian corporations face mounting pressure from investors, lenders, and EU taxonomy regulations to demonstrate measurable emissions reductions. Real estate accounts for a substantial share of corporate carbon footprints, and lease negotiations increasingly hinge on landlords' willingness to fund energy retrofits. Companies that delay upgrading their premises risk both higher operating costs and reputational penalties.

The Garibaldi Towers: From Railways to Green Icons

Built between 1984 and 1992 by Ferrovie dello Stato to house railway administration offices, the twin 100-meter, 25-story towers were sold to real estate investment trust Beni Stabili around 2007. Architect Massimo Roj oversaw a major renovation from 2008 to 2012, converting the postmodern orange-clad structures into what were billed as Italy's first "green towers." The redesign introduced interactive façades, bioclimatic greenhouses, natural ventilation systems, and seismic upgrades, earning LEED Gold certification for the broader Porta Nuova Garibaldi precinct.

Maire moved in as anchor tenant in 2012, and the towers have since become synonymous with the company's brand. Chairman and founder Antonio Di Amato described the renewal as a continuation of that identity: "The Maire Towers are now part of our history and Milan's identity. Renewing our presence here, focusing on energy efficiency and renewable solutions, means giving concrete form to a vision in which we believe: combining growth and efficiency while reducing our environmental footprint and improving the quality of work."

Strategic Context: Milan's Office Market Tightens

Milan's office vacancy rate has hovered near historic lows in recent quarters, particularly for newly built or recently refurbished space in the Porta Nuova, CityLife, and Symbiosis districts. Multinational tenants—from technology firms to financial services—compete for limited inventory, driving premium rents above €600 per square meter per year in top-tier buildings.

At the same time, older stock in secondary locations struggles to attract tenants without major capital investment. The bifurcation rewards landlords like Covivio that commit early to deep energy retrofits, but it also raises the bar for smaller property owners who may lack access to green financing or institutional backing.

For Maire, the decision to renew rather than relocate reflects both the strategic value of its Garibaldi address—directly above one of Italy's most connected transit hubs—and the practical difficulty of finding alternative space that can accommodate 33,500 square meters of contiguous occupancy in a single complex. Covivio's parallel expansion across Milan's hospitality and office sectors signals confidence in the city's continued appeal to international institutional capital seeking diversified ESG-compliant real estate portfolios.

Outlook: Decarbonization as Competitive Advantage

Italy's National Energy and Climate Plan mandates steep reductions in building-sector emissions by 2030, and the European Union's Energy Performance of Buildings Directive will soon require all new leases and sales to disclose energy performance certificates prominently. Properties that fail to meet minimum thresholds risk becoming "stranded assets," unsellable or unleasable without costly intervention.

The Maire-Covivio partnership demonstrates how long-term lease commitments can unlock landlord investment in sustainability upgrades that benefit both parties: Maire gains lower utility bills and reputational capital, while Covivio secures stable rental income and a trophy asset that commands premium valuations in ESG-focused investment portfolios.

As renovation work progresses toward the 2028 start date, the Garibaldi towers will serve as a visible test case for whether Italy's aging office stock can be economically transformed to meet climate targets—or whether the future belongs exclusively to newly built, purpose-designed green campuses.