A construction company with 20 or 40 employees does not need the same ERP as a large development group. However, the market usually presents them with the same solutions — and the same pitches — as large companies, with the predictable result: projects that drag on, implementations that never quite take hold and invoices that exceed the budget. This article summarises what we have learned by accompanying SME construction companies in Spain through the process of choosing and implementing their ERP: which modules are truly critical, which solutions fit best for fewer than 50 employees, what it really costs and how to avoid the most common mistakes.
Why an SME construction company's ERP is different from any other business
Construction has accounting and operational characteristics that set it apart from industry or retail. The three vectors that define any construction ERP are:
- Project-based site control: each construction site is a cost centre with its own budget, certifications, subcontractors and purchasing comparisons. Without this level of granularity, management is flying blind.
- Subcontracting and supplier management: construction companies work with dozens of tradespeople on each site; the ERP must manage purchase orders, delivery notes and invoices linked to each project.
- Certifications and billing to the developer: the billing cycle in construction is unique — monthly certification, retention bonds, deferred invoicing. A generic ERP does not model this well without costly custom development.
Added to this, from 2024–2026, is the obligation of Verifactu (verifiable electronic invoicing before the AEAT) for companies not using the SII system, which directly affects the majority of SME construction companies. The ERP you choose must include this module or guarantee a certified integration.
Essential modules for a construction company with fewer than 50 employees
Not all modules in an ERP catalogue are equally valuable for a small construction company. These are the ones that cannot be missing:
- Estimation and tendering: generation of budgets based on price databases (PREOC, BCCA or others), with breakdown of work units.
- Site planning: basic Gantt chart or integration with MS Project / Primavera for complex projects.
- Project financial control: real-time comparison of budgeted vs. actual costs; deviation alerts.
- Purchasing and subcontracting: requests for quotation, supplier comparisons, purchase orders and their linkage to site certifications.
- Billing and treasury: issuance of certifications, billing to the developer with retention bonds, cash flow forecasting.
- Verifactu / electronic invoicing: certified module or integration with a platform accredited by the AEAT.
- Basic HR: work reports by site, time tracking (mandatory in Spain since the Working Hours Registration Act) and linking labour costs to the project.
Advanced CRM, maintenance or manufacturing modules are superfluous for most SME construction companies and only increase the licence cost.
ERP comparison for SME construction companies in Spain (2026)
The table below lists the most widely implemented solutions in the SME construction segment with fewer than 50 employees in Spain. Price ranges are indicative market figures (2025–2026) and include licence/subscription costs but not the cost of implementation consultancy.
| Solution | Model | Monthly licence/subscription (indicative) | Key strength for construction | Main limitation for SMEs |
|---|---|---|---|---|
| Saappe Construm | Vertical SaaS | €200–500 / month (up to 10 users) | Very complete site module; budgeting with integrated PREOC | Limited integration ecosystem; smaller community |
| Sigrid | On-premise / private cloud | €400–900 / month | Reference in project financial control; well-established in Spain | Demanding implementation; high price for small companies |
| Sage 200 + construction module | SaaS / on-premise | €300–700 / month | Mature accounting ecosystem; wide network of partners in Spain | The site module is from a third party (partner); variable quality |
| Odoo + construction vertical | SaaS / self-hosted | €150–400 / month + vertical development | Flexibility and low licence cost; native integration with CRM, purchasing, HR | The construction vertical requires development; increases implementation cost |
| Presto + generic ERP | Perpetual licence + integrated ERP | Variable (Presto ~€1,500–3,000 licence + ERP separately) | Presto is the de facto standard in budgeting; integration with Sage or Dynamics | Dual system; requires a well-resolved integration or duplicated data |
| Dynamics 365 Business Central + construction extension | SaaS (Microsoft) | €600–1,200 / month | Accounting and reporting power; Microsoft ecosystem (Teams, Power BI) | High price; the construction extension depends on the partner |
Price reference sources: manufacturers' public lists (Sage, Microsoft, Odoo), sector publications such as CNC (Confederación Nacional de la Construcción) and Gartner and Capterra 2025 market analyses.
How much does it cost to implement a construction ERP in an SME?
The total cost of ownership (TCO) over three years of an ERP for a construction company with 15 to 50 employees in Spain falls, as an indicative guide, within the following bands:
- Economy solution (Odoo or small vertical SaaS): €15,000–35,000 over three years, including licences, implementation and maintenance.
- Mid-range solution (Sage 200, Sigrid for small companies): €35,000–70,000 over three years.
- Advanced solution (Dynamics 365 BC, full Sigrid): €70,000–120,000 over three years.
The factors that most push the price upwards are: number of simultaneous sites to manage, the need to integrate with existing budgeting software (Presto, Arquímedes), volume of active subcontractors and the degree of customisation required in financial reports.
If your company already uses Presto for budgeting and you want to keep it, the most common approach is to implement a financial-accounting ERP (Sage, Dynamics, Odoo) and integrate Presto via connectors or periodic exports. This architecture is cheaper in the short term but requires a well-designed integration to avoid double data entry.
To explore which solution best fits your specific situation, you can consult our construction ERP implementation service, where we analyse each company's starting point before recommending a platform.
The five most common mistakes when choosing a construction ERP in an SME
1. Choosing based on licence price without looking at the total cost
A cheap licence with a costly implementation or a poorly specialised partner ends up more expensive than a mid-range licence well implemented. Consultancy costs typically represent between 60% and 80% of total spending in the first year.
2. Ignoring Verifactu in the evaluation
Since 2025, the AEAT requires that the invoicing systems of companies not using the SII adopt the Verifactu standard (Royal Decree 1007/2023). Implementing an ERP that does not have this certified module forces a costly subsequent integration or an early system change. Always check whether the vendor is approved.
3. Underestimating the migration of historical data
Construction companies accumulate years of data in spreadsheets, old accounting software or budgeting programs. Migrating that history requires time and cost that are rarely budgeted well. Require the vendor to provide a detailed migration proposal before signing.
4. Not involving the site manager in the selection
The ERP is used daily by the site manager, not just the finance director. A solution that does not fit the actual workflow on site — work reports, material delivery notes, incidents — will not be adopted, and a tool that is not adopted is worthless.
5. Buying more modules than needed
Manufacturers incentivise the purchase of complete suites. A 25-employee construction company does not need manufacturing modules, complex warehouse management or advanced CRM. Start with the essential core and expand when actual use justifies it.
Verifactu and electronic invoicing: what every SME construction company must know in 2026
Royal Decree 1007/2023, which regulates the Verifactu system, affects all companies required to issue invoices that are not already in the SII (which applies to large companies with turnover above six million euros). The majority of SME construction companies fall within the scope of Verifactu.
The main requirements are:
- The invoicing software must generate an invoicing record with a chained hash that guarantees the immutability of data.
- Each invoice can be voluntarily sent to the AEAT in real time ("with submission" mode) or made available for subsequent consultation ("without submission" mode).
- The system must not allow modification of already-registered invoices without a full audit trail.
Before contracting any ERP, require written confirmation from the vendor that their solution is adapted to Verifactu and ask for the technical approval documentation. You can check the regulations directly at the AEAT electronic office.
Selection criteria according to the construction company's profile
There is no single «best» ERP for all SME construction companies. The optimal choice depends on several factors:
- Predominant type of work: civil engineering, residential construction, renovation or industrial construction have very different control requirements.
- Volume of subcontracting: if more than 60% of production is subcontracted, the trades management module is critical.
- Current level of digitalisation: a company that keeps its accounts in Sage and manages sites in Excel has a different starting point from one that already uses Presto and wants to add financial control.
- Geographic presence: if you operate in several autonomous communities, branch reporting modules and multi-company management become relevant.
- Need for BIM integration: for construction companies working on projects requiring BIM (progressively required in public tenders and EU-funded projects), ERP integration with tools such as Revit or IFC is a bonus worth considering.
Our construction ERP consultancy team carries out a free prior diagnosis to identify which market option best fits your reality before proposing a specific solution.
Frequently asked questions
Can a 15-employee construction company afford a construction-specific ERP?
Yes. Today there are vertical construction SaaS solutions with subscriptions from €200 per month that include the essential modules for site control, purchasing and invoicing. The minimum reasonable threshold for the investment to be justified is around 5–6 simultaneous sites or an annual turnover above €1.5 million. Below that volume, a well-configured general ERP (Holded, basic Odoo) may be sufficient.
How long does it take to implement an ERP in an SME construction company?
For a company of 15 to 50 employees with a standard functional scope (sites, purchasing, invoicing, accounting), indicative timelines are: vertical SaaS solutions, between 2 and 4 months; solutions such as Sage 200 or Dynamics BC, between 4 and 8 months. The variable that most extends the timeline is the migration of historical data and the training of site managers, not the technical configuration of the system.
Should I choose a construction-specific ERP or a generic ERP with a site module?
It depends on how central site control is to your business. If the company bills primarily through its own projects and financial site control is critical, a vertical construction ERP (Sigrid, Saappe Construm) delivers better results from day one. If the company mixes activities (construction, maintenance, services), a general ERP with a well-configured project module may be more flexible in the long term.
What about companies that already use Presto for budgeting?
Presto is the reference software for site budgeting in Spain, and many construction companies do not want or need to abandon it. The most common solution is to keep Presto for the tendering and budgeting phase and integrate it with the ERP to transfer budgeted costs and carry out real-time financial monitoring. This integration exists natively with some ERPs (Sage, Dynamics) and through intermediate developments with others (Odoo). The cost of that integration must be included in the project budget.