Few assets in a building’s portfolio work harder, or age faster, than the parking structure. Constantly exposed to moisture, road salts, and repeated freeze-thaw cycles, parking decks deteriorate faster than almost any other part of a property and that reality is increasingly being acknowledge by new laws.
New York City’s Periodic Inspection of Parking Structures program (Local Law 126) now requires owners to have a Qualified Parking Structure Inspector (QPSI) examine their garage at least once every six years, and New York State began mandating operating permits and periodic inspections for longer than the city, dating back to 2016. New Jersey is on the same path, with Fort Lee’s 2025 ordinance requiring a licensed engineer’s inspection every five years.
Once an inspection identifies problems, the questions we hear from those in the property management and construction industries are almost always the same: what happens next, and what should we expect? This article walks through the design and construction administration process that follows an inspection, and offers some insight into what a restoration project actually looks like.
Before design can begin, we often need more information, especially when original drawings for the deck no longer exist, which is more common than you’d think. Probes and material testing let the design team understand how the structure was built and what it’s made of, which is essential to producing accurate restoration drawings and specifications. The type of construction dictates which repair materials and methods are appropriate. Testing also reveals the condition of existing elements and flags any contaminants that must be addressed before repairs proceed. A hammer sounding or chain-drag survey locates delaminated concrete; chloride and carbonation testing measure how far corrosion-causing agents have penetrated; and ground-penetrating radar readings map reinforcing steel. Investing in this work up front eliminates unknowns during design and, just as importantly, produces more accurate numbers when it comes time to evaluate bids. Established guidance such as ACI 546R, the industry’s concrete repair reference, helps match the right repair method to the conditions we find.
The condition of a deck usually dictates how quickly restoration needs to begin. When repairs are widespread a phasing plan becomes necessary so the garage can stay at least partially in service throughout construction. Weather is the other major driver of the schedule. Cold temperatures affect sealants, coatings, and concrete, so these materials require special precautions or, at times, postponement. Optimal installation temperatures are generally above 40°F. Work areas can be heated to keep a tight timeline moving, but heating typically adds substantial cost—one of many places where the client’s priorities on schedule versus budget shape the plan.
A qualified design professional can usually recommend several contractors with genuine parking restoration experience, often having worked alongside them before and formed a view of their quality. A competitive bid is typically part of the design phase, and a bid matrix (a single chart laying out every bidder’s pricing and inclusions) lets the owner compare apples to apples. On larger projects, post-bid interviews give the owner a chance to sit down with each contractor’s project team, walk through cost breakdowns, and get a feel for who they’ll actually be working with. Not every project calls for a full formal bid. For a small, well-defined repair with a trusted contractor already on site, a negotiated approach can be perfectly reasonable; the right process depends on the size and complexity of the work.
Occupants almost always need some level of access to the garage during a restoration project. Even with signage, barriers, and caution tape in place, they need to be told clearly where the active and potentially hazardous work areas are. Parking restoration is also loud, and noise breeds frustration. In our experience, the single most effective tool for reducing complaints is communication: regular updates on where work is happening, start times, work hours, and overall progress go a long way toward keeping tenants and residents on your side.
Once a contractor has mobilized, it becomes far more cost-effective to fold in additional repairs. It’s often prudent to address items that aren’t urgent today but will need attention eventually, and a good design professional will price these as alternates. Presented as line-item costs, alternates let the owner decide (with real numbers in hand) whether the budget allows for adding them to the scope now rather than paying to remobilize later.
Construction administration is the design professional’s oversight during the build itself. They confirm that the plans and specifications are actually being followed. During this phase, schedules and costs are tracked, warranties are validated, and final signoff is completed. As it gives owners assurance that the project is delivered as designed and bid, we strongly recommend that construction administration be part of every restoration project. We’ll be candid, though: for very small or routine repairs, some owners reasonably choose to self-manage the work, and that might be alright if it is a trusted contractor with a lot of experience and the manager has a lot of garage experience as well. The larger and more complex the project the more that independent oversight earns its keep.
Parking structure restoration is rarely simple, but it is very manageable with the right process and the right team. If your building is facing an upcoming inspection deadline, or you’ve already received a report flagging repairs, we’re glad to talk through what it means and what comes next.
Kevin M. Duffy
Principal
Duffy Engineering
