No project captures this conversation better than Google's Thompson Center — amenity-driven, code-complex, and happening in our backyard.
With downtown office vacancy rates soaring to all-time highs (28.6% in Chicago during the first quarter of 2026 per CBRE), the need to attract and retain tenants is ever greater.
The recent accelerated trend to add amenities to multi-story office buildings is being driven not only by vacancy rates but by the need to transform workplaces from simple, functional spaces into experiential destinations that attract employees back to the office in a hybrid work era. As remote work remains popular, landlords and developers are investing in services and spaces—such as fitness centers, rooftop lounges, and high-end cafes—to differentiate their assets, increase tenant retention, and justify rental premiums.
Key reasons for this trend include:
Return-to-Office Incentives: High-quality curated amenities (e.g., yoga studios, wellness areas) make the office a "destination" that offers a better experience than working from home.
Talent Recruitment and Retention: Modern employees prioritize wellness and work-life balance. Highly amenitized buildings help companies attract top talent and boost employee satisfaction.
The "Amenities Arms Race" for Tenant Demand: Properties with diverse amenities (e.g., meeting spaces, food & beverage, fitness) are, by some reports, experiencing 12% higher demand compared to, non-amenitized counterparts.
Maximizing Asset Value: While requiring initial capital expenditure, amenities justify higher rental rates, increase property value, and reduce the high costs associated with tenant turnover.
Promoting Social Connection and Collaboration: Amenities like communal lounges, shared outdoor spaces, and integrated retail facilitate networking and social interaction, which are crucial for organizational culture in a hybrid environment.
Focus on Wellness and Safety: Post-pandemic, health-focused amenities—such as enhanced air filtration systems, contact-free technology, and meditation rooms—have become crucial for employee comfort.
In essence, landlords are shifting from selling "space" to selling "workplace experience," utilizing amenities to build a community-oriented ecosystem that makes the office indispensable.
Adding amenities such as fitness centers, cafes, lounges, or conference centers to multi-story office buildings often triggers significant building code issues because the usage changes from low-density, B-occupancy (business) to high-density, A-occupancy (assembly) or specialized uses. These changes commonly involve challenges related to occupant load, egress, structural capacity, and accessibility.
Key building code issues resulting from these retrofits include:
These "alterations," under building codes, can also lead to cases where compliance is technically infeasible, necessitating detailed reviews with local building officials regarding alternatives or variances.
Key Code Compliance and Potential Variances:
When Variances Are Required: Technical infeasibility comes up more than people expect. Consider a 1970s office tower adding a rooftop amenity lounge. The existing stair configuration may not support the required egress width for the new assembly occupancy, and there's simply no structural or spatial path to widen it. That's the moment you're sitting across from a building official explaining what 'maximum extent feasible' actually means in practice.
Substantial Improvement: Cost thresholds catch more teams off guard than you'd expect. A landlord investing $4 million in a full-floor amenity conversion on a 1980s building may cross the threshold that triggers whole-building code compliance. Suddenly a single-floor project becomes a building-wide conversation about sprinkler systems, egress, and accessibility upgrades that were never in the budget.
Historic Buildings: Picture a pre-war office tower in the Loop adding a rooftop lounge. The required egress stair addition would punch through a terra cotta facade that's part of the historic designation. Compliance as written is off the table. Now you're coordinating between the building department, the landmarks commission, and your structural engineer to find an alternative that satisfies life safety without destroying what made the building worth saving in the first place.
If the combination of the new amenity and the existing building exceeds the allowable height or area, specific code provisions for additions (like constructing fire walls) will apply to avoid a full code upgrade of the entire structure.
Performing an early building code analysis is critical for project success, as it identifies regulatory constraints before they become costly, time-consuming, or disruptive changes during later, more expensive design or construction phases. Integrating these requirements during the concept and schematic design stages allows teams to identify potential conflicts, such as fire safety requirements, egress, and zoning regulations, which can significantly alter building design if discovered late.
Key Benefits of Early Code Analysis:
The architects and owners who navigate these projects well share one habit: they ask the code questions before the design gets too far along. Once a rooftop lounge is three months into design development, the conversation about occupancy reclassification is painful. At concept stage, it's just planning.
Amenity retrofits are one of the most code-complex project types in commercial real estate right now. Occupancy reclassifications, egress recalculations, accessibility triggers, variance negotiations. These aren't surprises if you bring the right team in early.
Burnham Nationwide specializes in permit expediting and code consulting for exactly these situations. We know how to read an existing building against current code requirements, identify where the conflicts are, and work with local building officials to find a path forward before those conflicts become budget problems.
If you're planning an amenity addition or office retrofit, let's talk before the design gets too far along. That's where we do our best work.