Start with categories, not a total
It is tempting to begin with a single figure and work backward. A more reliable approach is to list the categories of cost first, estimate each roughly, and only then compare the sum to what is available. This reveals gaps early and shows which items can be reduced without harming the exhibit’s purpose.
Prices vary widely by region, supplier and scope, so this article does not quote real costs. It focuses on what to include and how to reason about proportions.
The main cost categories
Planning and design
Time spent on research, concept development, interface design and any early testing. Even when this work is done by in-house staff, it takes real hours that should be counted. Skipping it rarely saves money, since changes made after building are usually more costly than changes made on paper. Low-cost methods such as paper prototypes help here.
Software development
Building the interactive software, including any content management tools so staff can update text and images later. If you adapt an existing tool rather than building from scratch, costs often shift from development to configuration and licensing, though the work does not disappear.
Content production
This category is frequently underestimated. It can include photography, scanning, video, audio recording, writing, editing, exhibit translation, captions and transcripts, and clearing rights. Content often takes more effort than the software that displays it, especially when source material needs to be digitized first.
Hardware
Displays, computers or media players, speakers, cables, sensors, mounts and enclosures. Include spares for parts that are likely to fail or be hard to source later. Choices about display types and screen enclosures can change the total considerably.
Installation and fit-out
Carpentry, electrical work, network connections, labor for mounting and any gallery changes needed to host the exhibit. Older buildings sometimes need extra work for power and cabling.
Testing and accessibility
Time for prototype testing, fixing issues found, and checking the finished exhibit against your accessibility commitments. Budgeting for this explicitly makes it harder to cut when a schedule gets tight.
Documentation and training
Writing the records a later team will need, and training staff who will operate the exhibit. This is easy to drop at the end and costly to miss, as explained in the discussion of documentation and handover.
Ongoing running costs
Repairs, software updates, replacement parts, content refreshes, licensing renewals, hosting and electricity. A common planning approach is to set aside an annual allowance for upkeep. The right amount varies; the point is to have one rather than assuming the exhibit will look after itself.
Contingency
An allowance for surprises. Projects with new technology, uncertain content or tight sites usually justify a larger contingency than simple ones. Treat it as a planned part of the budget, not as slack to be spent on extras.
A hypothetical worked example
The figures below are invented purely to show the arithmetic. They are not benchmarks and should not be used to price a real project.
Suppose a hypothetical museum has a total project budget of 100,000 currency units for one touch-based exhibit. It allocates:
| Category | Hypothetical amount |
|---|---|
| Planning and design | 15,000 |
| Software development | 25,000 |
| Content production | 20,000 |
| Hardware | 22,000 |
| Installation and testing | 8,000 |
| Contingency | 10,000 |
| Total | 100,000 |
Check: 15,000 + 25,000 + 20,000 + 22,000 + 8,000 + 10,000 = 100,000.
Now suppose the museum realizes it has not allowed for documentation, training or upkeep. It might choose to move 5,000 from software development into a documentation and training line, leaving software at 20,000. The total stays at 100,000, but the project is now better prepared for handover.
It also decides to set aside an annual upkeep allowance. If it assumes, for illustration only, 8,000 per year, then over three years upkeep adds 24,000 (3 x 8,000) on top of the build. The three-year cost of ownership in this invented scenario is therefore 100,000 + 24,000 = 124,000. The lesson is not the specific numbers, but that the build price is only part of what the exhibit costs.
Common budgeting mistakes
- Counting only the build. Upkeep, refreshes and replacements arrive every year after opening.
- Treating content as free. Photography, writing, translation and rights clearance take time and often money.
- Ignoring staff time. Hours from curators, educators and technicians are real costs even when no invoice appears.
- Cutting testing first. Testing is cheap compared with rebuilding a feature visitors cannot use.
- No contingency. Hardware delays and late content, discussed under project risk, regularly consume extra money.
Handling a budget that is too small
If the total of your estimates exceeds your funds, resist spreading the shortfall evenly. Consider instead:
- Reducing scope, such as fewer languages at launch or a smaller number of objects, while keeping a design that can grow.
- Reusing existing content and open access images where the licenses allow.
- Choosing simpler hardware with easy-to-find replacements.
- Phasing the project so a smaller first version opens and later additions follow.
Small organizations often find that a modest, dependable exhibit serves visitors better than an ambitious one that cannot be kept running. The experience of small museums suggests that planning for upkeep from the start tends to matter more than adding features.
Keep the budget alive
A budget is a working document. Record actual spending against estimates as the project proceeds, note why differences occurred, and revisit the contingency at each major milestone. When a supplier quotes, compare their price to your categories so you can see what is and is not included. Over time, your own records become the most useful guide for the next project.