ETI Blog

When you think about a multifamily renovation or retrofit project, the first thing that comes to mind may be reworking a layout for more flexibility or replacing dated punch windows with high-performance glazing to bring in more light. But as building’s age and expectations for energy efficiency and comfort increase, the mechanical, electrical, and plumbing (MEP) systems behind the walls matter just as much as what’s visible on the surface.

The challenge is that these systems take considerable coordination before construction even begins. They not only require a fair amount of space but also must be integrated so that they don’t interfere with one another or intersect with existing structures. It’s not uncommon to find a duct cutting into a joist or a sprinkler line overlapping with a lighting fixture. When these issues aren’t addressed in the design phase, they can add unanticipated redesign costs to the budget and extend the timeline if rework is required.

At ETI, our team has worked to help architects and owners design with MEP constructability in mind, spotting issues early so construction stays on track. The following outlines best practices for MEP design in multifamily renovations and retrofits.

Why MEP Constructability Coordination Matters in Multifamily Renovations

Whether you’re retrofitting a historic building or renovating common areas in a multifamily property, MEP constructability assessments ensure that all systems fit together as intended and account for how safe the systems are, how efficiently they operate, and how well they align with evolving codes.

Improved Building Safety

Older buildings can introduce serious health and safety risks for residents. For example, outdated electrical panels may not be sized for today’s loads, increasing the risk of overheating or fire. Corroded plumbing could leak contaminants into the water supply, while failing sewer lines can spread mold and compromise indoor air quality.

By coordinating system assessments during design, safety hazards can be identified before drawings are finalized. Multifamily contractors and trade partners who are well-versed in Chicagoland’s housing stock can review existing conditions of the property and flag outdated infrastructure, highlight where capacity needs to be increased, and review layouts to catch issues like ceiling height or plumbing stack placement early on. This due diligence during the design phase will save clients time and money during multifamily construction.

Enhanced Energy Efficiency

As MEP systems age, they inevitably become less and less efficient, which drives up high operating and maintenance costs for residents and owners alike. Retrofitting older buildings can be the best way to reduce these costs and reposition a property in the market to align with tenant expectations. However, older buildings weren’t built for today’s systems in mind, so low ceilings, closely spaced columns, and load-bearing walls can restrict how pipes, ductwork, and equipment are routed for modern amenities.

For example, air conditioning and in-unit laundry are among the top two most popular multifamily renovation features requested by residents, but also one of the most complex to configure. Adding cooling may mean replacing constant-volume HVAC units with water-source heat pumps or VRF systems that can be threaded through tight spaces. And adding washers and dryers requires upsized plumbing risers, new venting strategies, and electrical panels that can handle heavier appliance loads.

With MEP system assessments built into the design phase, architects can use creative approaches to circumvent structural challenges without sacrificing design quality, while delivering the comfort and amenities residents are willing to pay a premium for.

Updated Code Compliance

Multifamily renovations and retrofits should also consider how MEP systems align with current building codes. Chicago’s updated construction codes now align with national standards on electricity and conveyance devices, new energy efficient requirements, water conservation, and fire safety.

To verify code compliance, rough-in inspections review plumbing lines, electrical wiring, ductwork, and venting before walls and ceilings are closed up, ensuring installations meet the latest safety and efficiency requirements. If something doesn’t pass at this stage, it can result in costly rework that extends schedules and disrupts other trades. Be sure to work closely with officials to navigate the new building codes and permitting process. 

Design-Phase Checklist: Coordinating MEP Systems

The checklist below highlights key considerations to keep in mind during the design phase. Early input can prevent clashes, reduce rework, and keep projects on schedule.

• Conduct site assessment and review existing conditions
• Establish budget and cost allowances for MEP systems
• Verify applicable codes and permitting requirements
• Verify riser and shaft capacities
• Test electrical load capacity
• Address ceiling height and routing constraints
• Anticipate trade sequencing needs
• Select materials and equipment
• Confirm equipment access and maintenance clearances
• Plan for rough-in inspection requirements
• Incorporate safety measures during installation
• Phase work with resident impacts in mind
• Explore prefabrication and modular options for efficiency

As a leading multifamily renovation contractor in Chicago, our team brings an extensive background in MEP coordination and can help you plan and execute your next project. Request a quote or call us at (773) 299-6574 to learn how our team completes jobs 15% faster than local competitors.