What Would Happen If BCIS Disappeared? The Real Alternatives and Their Limits
If BCIS stopped trading tomorrow, what would the construction and FM industry use instead? Most professionals treat BCIS as a monopoly because it is easy, but a range of substitutes exist. This article provides an honest assessment of the alternatives — from Spon's and Costmodelling to ONS data and consultant indices — and identifies where they fall short of the BCIS standard.
The "BCIS monopoly" is a common industry complaint, but it is a choice rather than a legal requirement. The UK construction and FM industry relies on BCIS not because there are no other data sources, but because BCIS provides a "common language" that everyone from the insurer to the sub-contractor agrees to speak.
But what if that dictionary vanished? What if the private equity transition or a failure in the data contribution model (discussed in Article 5) forced the industry to move on? In this article, we look at the honest counterfactual: the landscape of alternatives and their real limits.
The Honest Counterfactual: Life After BCIS
If BCIS disappeared, the industry wouldn't stop building or maintaining estates, but it would become significantly more fragmented. We would revert to a "firm-sovereign" data model. Large Tier 1 contractors and Tier 1 QS firms (like Turner & Townsend or Arcadis) would rely entirely on their own internal benchmarks. Small firms would be left guessing.
The primary loss wouldn't be the "prices"—those are available in many places. The loss would be the independent audit trail. Without BCIS, every negotiation would become a "battle of the spreadsheets" where both parties dispute the other's data source as biased or unrepresentative. The friction in UK procurement would increase overnight.
BCIS is the 'Switzerland' of construction data. If it disappeared, we wouldn't lose the numbers; we would lose the neutral ground where those numbers are agreed upon.
The Five Substitute Layers and Their Real Limits
There is no single "drop-in" replacement for BCIS. Instead, there are five distinct layers of substitutes, each with specific strengths and weaknesses.
1. Commercial Price Books (e.g., Spon's)
Spon’s is the most famous alternative, widely used by contractors for building up unit rates. It is excellent for "bottom-up" estimating—knowing exactly what a linear meter of copper piping or a square meter of drywall costs today. However, it lacks the macro-indices (Tender Price Indices) and the location factors that allow you to adjust a whole-building cost from three years ago to today’s value in a different city. Spon's is a tool for the estimator; BCIS is a tool for the strategist.
2. Independent Data Vendors (e.g., Costmodelling.com)
Firms like Costmodelling provide digitally-native alternatives. They are often faster to update and more user-friendly than the legacy BCIS interfaces. Their limit is the volume of data. Because BCIS has the 60-year RICS legacy, they have a larger historical sample size. Modern vendors are technically superior but statistically "thinner" in niche sectors.
3. Consultant Market Intelligence (T&T, Gleeds, Arcadis, RLB)
Large consultants produce excellent quarterly market reports and indices. These are often more "live" and insightful than BCIS because they reflect what their active clients are seeing in the market right now. The limit is perceived bias. A contractor may challenge a T&T index as being "skewed" toward the types of high-end projects that T&T typically manages.
4. Public Data (e.g., ONS Data)
The Office for National Statistics (ONS) provides indices for construction materials and labor. This is "sovereign" data—it is free and neutral. However, it is far too macro for FM or QS use. Knowing that "construction materials" rose by 4% doesn't help an Estate Manager understand why their specific air-conditioning maintenance contract just rose by 12%.
5. Internal "Project Sovereign" Data
For a large estate team (e.g., a major university or a retail chain), the best data source is their own historical tender results. This is 100% accurate to their way of working. The limit is the "echo chamber." If you only use your own data, you never know if you are overpaying compared to the rest of the market. You need an external benchmark to keep your internal data honest.
- Spon's (Price Book): Used for building a price from scratch. (Input: Labour hours + Material units).
- BCIS (Benchmarking): Used for checking if a total price is reasonable.(Output: Total cost per m² or total OpX per asset).
- Spon's tells you how much the bricks cost.
- BCIS tells you if the whole wall is priced correctly for a school in Manchester.
| Substitute | Best Use Case | The "BCIS Killer" Gap |
|---|---|---|
| Spon's | Detailed unit rate build-ups and contractor estimating. | Lacks macro indices and regional location factors. |
| Costmodelling | Modern, digital project feasibility and modeling. | Smaller historical dataset and lower industry recognition. |
| Consultant Reports | Current "market mood" and short-term trend forecasting. | Potential bias; indices limited to their specific client base. |
| ONS / Gov Data | Broad economic monitoring and material cost tracking. | No sectoral granularity (e.g., no specific "School FM" data). |
| Internal Data | The most accurate reflection of your own procurement. | No external verification; creates an "echo chamber" risk. |
The same alternatives question has been examined for SFG20 in Hard FM maintenance. Six named alternatives assessed honestly, including ISO 55001, RCM, and condition-based monitoring.
Who Suffers Most Without BCIS?
The disappearance of a common standard hits the public sector and the insurance industry hardest. For a Local Authority, BCIS is a shield against audit. If they accept a tender that is 5% above the BCIS benchmark, they have a defensible reason. Without it, every procurement decision is open to challenge.
Similarly, property insurance relies on the BCIS ProtX (reinstatement) data to ensure sums insured are accurate. If the insurance industry lost this standard, we would see a massive spike in "under-insurance" as firms use different, unverified indices to guess at rebuilding costs.
While alternatives exist, none currently provide the structural glue that holds the different parties in a contract together. In Article 5, we look at the biggest threat to BCIS itself: the growing reluctance of contractors to provide the very data that the service relies on.
Frequently Asked Questions
Only if your role is primarily contractor-side estimating. Spon's is a "bottom-up" price book for building up unit rates. If you are an FM Director or Estate Manager who needs to benchmark a whole building, or adjust historical data for inflation and location, Spon's does not provide the indices or location factors required to do this as accurately as BCIS.
"Biased" is perhaps too strong, but "limited" is accurate. A consultant's index is based on the projects they manage. If a consultant primarily works on high-end commercial offices in London, their index might not reflect the market reality of a social housing project in South Wales. BCIS aggregates data from hundreds of different firms, making it a more "neutral" market average.
The only truly free data is ONS (Office for National Statistics) data. While it is useful for tracking broad material inflation (e.g. knowing that steel has rose by X%), it lacks the sectoral detail needed to benchmark a specific building or FM contract. For professional use, there is currently no "free" version of the intelligence BCIS provides.
- Art. 1What Is BCIS and Why Does the UK Construction Industry Still Run on It?
- Art. 2BCIS CapX, OpX, TotX, ProtX and LCE Explained: Which Product Do You Actually Need?
- Art. 3How Accurate Is BCIS Data? What FM Directors and Estate Managers Need to Know
- Art. 4What Would Happen If BCIS Disappeared? The Real Alternatives and Their Limits (this article)
- Art. 5Why Contractors Stop Contributing Data to BCIS and What That Means for Your Benchmarks
- Art. 6Is BCIS Worth the Subscription? Brand Perception After the RICS Spin-Out
- Art. 7BCIS vs Spon's, Costmodelling, Turner and Townsend, Gleeds and Arcadis: A Real Comparison
- Art. 8Will AI Replace BCIS? What Large Language Models Can and Cannot Do with Construction Cost Data
- Art. 9How to Stop Using BCIS as a Crutch: The Intelligence Stack for FM and Estates Teams
Related: Hard FM estimating and bid pricing support
Related: When to outsource Hard FM estimating
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Next: Article 5 · Why Contractors Stop Contributing Data to BCIS and What That Means for Your Benchmarks
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