Construction Today
Taking Inventory
Inventory management is a difficult balancing act that contractors must master
if they don’t want to waste money or fall behind on projects.
By Wolffe Bagby
Inventory is a major expense for construction companies, which is why a sound inventory
control plan is essential. It sounds easy enough, but it isn’t always. On the one hand,
the goal is to keep onsite inventory as low as possible without running out of any items.
Too much inventory translates into wasted dollars from damage, pilfering and theft. On
the other hand, when there is too little inventory, often there is not enough to keep
workers busy. Or worse yet, without the right materials on the job site, the project can
fall behind. This is why a thorough knowledge and understanding of the specific requirements
for every job represent a balancing act for the individuals involved with and responsible
for inventory management.
Not Enough Inventory
Determining inventory needs requires daily communication between job site staff and inventory
management staff. When the onsite superintendent schedules project tasks for the construction
crew to work on, he or she assumes that needed inventory will be available. If the individuals
responsible for inventory order the incorrect merchandise for a job, order late or the
merchandise is delayed, the project stalls. This can have a significant impact on more than
just the construction crew.
Furthermore, additional bottlenecks can occur if needed inventory is not available onsite. For
example, if the electrical staff cannot work without the proper electrical equipment, this will
result in a scheduling delay for the HVAC staff. And, it’s not cost-effective to arrange for
the plumbing staff to work a job when only half of the plumbing fixtures have been delivered.
To reduce or eliminate this problem, confirm the project and inventory staffs are discussing
project inventory needs on an ongoing basis.
Working with Vendors
Due to the complexity of construction, inventory management staff works and negotiates with a
variety of vendors to provide the needed supplies for each specific project. Yet, there are many
aspects to balancing these relationships.
The first is the number of vendors needed for each item based on availability. For example, one
vendor normally provides the wood for the projects, but a client requests a specific wood not
carried by the usual vendor, causing the contractor to contact another vendor. Or, there may be
product shortages with vendors resulting in using more than one vendor to fulfill project demands.
A second issue involves working with out-of-state vendors with different delivery or shipment
policies than local ve n d o rs, possibly resulting in project delays. To complicate matters,
when there are multiple vendors involved, there are varying delivery schedules to coordinate.
It may take numerous phone calls and contacts to ensure on-time delivery of the correct materials.
Quality vs. Price
A major concern with inventory management is weighing the quality of the products vs. the price
of the products. Purchasing inventory purely based on price may end up costing a company more money
in the long run due to using an inferior product. Consider these questions:
- How does the quality of the item relate to the cost of the item?
- Has an alternative, less-expensive product been used reliably in the past?
- What is the goal of this construction project? Is it an office building with stringent
specifications or a residential building with flexibility? Is the project in an earthquake
or other natural disaster area?
- Can this inventory be delivered in a timely basis? A less-expensive product may in fact be more
expensive if it takes too long to arrive or has high shipping costs associated with it.
There is no right answer to the price vs. quality question. Researching both the products and vendors
assists companies in making informed decisions.
On-Time Delivery
Typically after products are ordered, inventory personnel wait until just before the delivery date
to contact the vendor to see whether the expected delivery will arrive on time. That’s when they
find out whether there is a problem the vendor failed to disclose.
Avoid this scenario by becoming proactive. Follow up with vendors frequently to verify inventory
items will be delivered as scheduled. Additionally, if the vendor continuously fails to meet
delivery obligations, then it’s time to interview alternate vendors who can deliver the products
within the established timeframes. Construction companies cannot afford to miss deadlines.
Inventory Control
Controlling inventory reduces losses from theft, scrap and jobsite damage. This cost savings is vital
to profitability. Here’s where project-scheduling software can be a real asset for inventory management
staff. Any good program will help automate and manage inventory, coordinate delivery schedules and set
reminders for vendor follow-up calls.
Gantt charts also assist with inventory control. These charts graphically display tasks to be completed
on specific dates and are useful for planning and scheduling project inventory needs and timelines. Just
as delayed inventory impacts construction schedules, inventory delivered before it is needed on the job
site costs companies money. Organize delivery schedules so the inventory is delivered on a just-in-time
basis.
Many companies just don’t keep track of their inventory. Without an inventory management plan, inventory
might be delivered and then promptly forgotten. When this happens, excess inventory is likely to build up.
Then, in addition to products becoming obsolete, the resulting over-stock can mean much higher costs to
the company.
Additionally, damaged or unusable inventory is discarded, another source of increased costs. Determine
whether the damage was due to lack of adequate storage space, being stored improperly or arriving damaged
from the vendor. Then the organization will know where to make changes by working with the vendor to
provide damage-free merchandise or to train employees to handle inventory cautiously.
The key to controlling inventory is balancing the onsite project needs with the vendor delivery particulars.
Clear communication channels among inventory personnel, project supervisors and vendors allow the workflow
to proceed on schedule.
Hold inventory management employees accountable by setting high expectations. Software programs alone won’t
solve all problems. Recognizing the challenges and inaccuracies associated with managing inventory allows
companies to more effectively control costs both in-house and on the job site.
Wolffe Bagby is a project manager with IPA. IPA and its combined family of
consulting firms provide comprehensive business consulting, tax planning and business valuation services
to companies in the United States and Canada. For more information, call 847-495-6786 or visit www.ipa-iba.com.