Kitting and assembly: what it is and when it's worth outsourcing

Kitting and assembly is the process of bringing multiple products or parts together to create a finished pack, ready for storage, delivery or sale.

It could mean putting together gift sets for a brand, preparing parts for a production line or organising furniture and fittings for a hotel refurbishment.

For businesses handling big volumes of stock, it can be a time-consuming job. Products often arrive from different suppliers at different times, packaging needs to be checked and everything has to be ready by a certain date.

Some businesses manage this themselves, whilst others choose to use a logistics company to handle the work.

At SFI, we've been providing warehousing and distribution services since 1992, including kitting and assembly.

Get in touch with the team if you'd like to explore a free quote.

What is kitting and assembly?

Kitting means grouping separate products or elements together so they can be stored, sold or delivered as one unit. Assembly involves putting those parts together or preparing them to be used.

For example, a company might need three skincare products packed into a gift box. A manufacturer might need a set of screws, brackets and fittings packed and placed together for its production team.

Both involve kitting, although the work involved is quite different. You'll also hear terms like bundling, repacking and labelling. These services often overlap.

Bundling usually means selling multiple products together, while repacking involves changing how products are packaged. Kitting can include both, along with assembly and labelling.

The important thing is agreeing exactly what the finished pack should include before work begins.

 

What types of businesses use kitting and assembly?

 

Kitting is used across retail, manufacturing, ecommerce and commercial fit-out projects. The products vary, but the aim is usually the same: getting everything organised before it's needed.

 

Ecommerce and retail

Retailers often use kitting for gift sets, subscription boxes, promotional packs and multipacks.

Think about a Christmas gift set containing different products from different suppliers. Each item needs to arrive, be checked and packed into its new box before the retailer can sell it.

Timing matters too. A Christmas gift set that isn't ready until the end of December has missed most of its selling window.

Businesses that use the same warehouse for kitting and ecommerce fulfilment can also avoid moving stock between different locations.

 

Manufacturing

Manufacturers use kitting to prepare parts for production lines, engineering teams and maintenance work.

Rather than collecting individual parts every time they're needed, workers get a complete kit containing the right parts. This saves a lot of time looking for different items and helps keep production moving.

It can also free up valuable floor space. Parts waiting to be assembled, along with finished kits, can take up more room than expected. For businesses already short on space, moving this work to a warehouse may be worth considering.

You can read more in our guide to logistics for manufacturers.

 

Office, hotel and commercial fit-outs

Kitting is also useful for projects involving furniture, fixtures and equipment. A hotel refurbishment, for example, might involve hundreds of rooms needing the same furniture, fittings and accessories.

These products may arrive from different suppliers at different times. Rather than sending everything straight to the hotel, a logistics company can receive the deliveries, check the elements and organise them into packs for each room or floor.

Furniture can also be assembled before delivery. This means installation teams receive the items they need without spending hours sorting through boxes on site.

Even a missing bag of screws can delay an installation. It's much easier to find that problem in a warehouse than when the team is already working on site. 

Our FF&E logistics service covers the storage, preparation and delivery of furniture and equipment for these projects.

 

How does kitting work in a warehouse?

 

Kitting usually involves receiving the parts, checking stock, preparing the kits and storing them until they're needed.

The process generally follows five steps.

Receiving stock: Products arrive at the warehouse, sometimes from multiple suppliers. Deliveries are counted, checked for damage and recorded.

Checking quantities: The team works out how many complete kits can be made from the stock.

Agreeing the finished kit: The contents, packaging and labels are confirmed. A sample may be prepared before the full job begins.

Building the kits: Products are grouped, packed, labelled or assembled according to what's needed.

Checking and dispatching: Finished kits are checked, recorded and stored until they're ready for delivery.

Stock checks are especially important. Say you're preparing 2,000 gift sets containing three products. You've received 2,000 units of the first two products, but only 1,400 of the third.

That means you can only make 1,400 complete sets. Finding out when the deliveries arrive gives you time to contact the supplier. Discovering it halfway through packing could delay the entire order.

Accurate records also help businesses keep track of what's arrived, what's been assembled and what's ready to leave. This is part of the work covered by our warehouse management and distribution service.

 

Should you build kits in advance or when orders arrive?

 

Building kits in advance works well when you know how many you'll need. Building them to order gives you more flexibility when demand changes. Both approaches have their advantages.

 

Building kits in advance

Building kits ahead of time means they're ready to send out as soon as an order arrives. This can be useful for seasonal promotions, product launches and busy shopping periods.

However, it also means storing finished kits until they're sold. If demand falls or packaging changes, you could be left with stock that needs taking apart and repacking.

 

Building kits to order

Some businesses prefer to keep products separate until customers place orders. This works well when customers choose different combinations or when demand is difficult to predict.

The downside is that each order takes a lot longer to prepare. A lot of businesses use a combination of both methods, keeping a small number of finished kits ready and making more as needed.

If you're preparing for a busy period, short-term warehouse storage can also provide extra space for components and finished stock.

 

When is kitting and assembly worth outsourcing?

 

Outsourcing is worth considering when kitting starts taking up too much space, staff time or money.

For smaller businesses handling a few orders each week, doing the work in-house may be manageable.

But as volumes grow, things can become harder to organise.

Some common signs that outsourcing could help include:

• Staff are spending too much time packing kits instead of doing their usual jobs.
• Products are taking up space needed for production or other warehouse work.
• You're regularly paying overtime or bringing in temporary workers.
• Elements arrive from several suppliers and are becoming difficult to track.
• Mistakes are leading to delays, returns or extra work.
• Your stock is already held by a logistics company that could prepare the kits.

The decision comes down to what the work is costing you and whether your team has the time and space to manage it.

 

How much does kitting and assembly cost?

 

The cost depends on how many kits you need, how complicated they are and what work is involved.

Packing three products into a box will generally take less time than assembling furniture or preparing kits containing dozens of components to order. When comparing costs, consider more than the time spent putting each kit together.

You'll also need to account for:

✓ Receiving and checking deliveries.

✓ Warehouse space for components and finished kits.

✓ Staff time.

✓ Packaging, labels and other materials.

✓ Checking finished kits and correcting mistakes.

✓ Storage and delivery.

 

Comparing in-house costs with outsourcing

Start by calculating how long your team spends preparing each kit. If one kit takes six minutes to complete, preparing 1,000 kits will take around 100 hours.

At the National Living Wage of £12.71 per hour for workers aged 21 and over from April 2026, that's £1,271 in basic wages alone.

It doesn't include employer National Insurance, pension contributions, holiday pay, supervision or warehouse space. You can then compare that with quotes from logistics companies.

Some charge per kit, while others charge based on the time involved. Receiving, storage, packaging and delivery may be charged separately. Make sure you know what's included before comparing prices.

Our guide to the risks of outsourcing logistics explains some of the other costs worth checking.

 

What should you look for in a kitting and assembly company?

 

Look for a company that has experience handling products like yours and can explain how it will manage the job from start to finish.

A company that regularly prepares small retail gift sets may not have the space or equipment needed for big furniture packs.

Before choosing a company, ask:

• Have you worked with similar products before?
• How do you check and record incoming stock?
• What happens if elements are missing or damaged?
• Can we approve a sample kit before production starts?
• Can you handle big orders during busy periods?
• How are finished kits stored and delivered?
• What happens if we need to change the contents or packaging?

It's also worth checking whether the company can handle other parts of your logistics.

For example, if your products need storing, assembling and delivering, using one company could save time moving stock between different businesses.

Our guide to pick and pack versus full-service fulfilment explains how these services differ.

 

What information will a kitting provider need?

Before asking for a quote, it helps to have a few details ready.

These include the products going into each kit, the quantities, packaging instructions and when everything needs to be finished. Photos or samples are useful, just so you know you're getting exactly what you want.

You should also explain where the components are coming from and where the finished kits need to go.

If there are any likely problems, like late supplier deliveries or restricted access at the delivery site, mention them early. It's easier to plan around these issues before work begins.

 

Kitting and assembly with SFI

 

At SFI, we provide kitting and assembly as part of our value added logistics services.

We work with businesses that need products grouped, packed, labelled or assembled before they're delivered.

Our 45,000 sq ft warehouse provides space to receive elements from different suppliers, prepare finished kits and store them until they're needed.

We can also arrange nationwide distribution, whether the finished products are going to customers, retailers or commercial sites.

If you're considering outsourcing, get in touch with SFI. Tell us what needs packing or assembling, how many kits you need and when they need to be ready. We can talk through the options and explain how we'd handle the work.