ERP System for Construction
An ERP system for construction built for Bulgarian general contractors and developers: project accounting per site, live budget vs actual, BOQ-to-invoice chains, subcontractor retention and a full VAT register. One financial source of truth for every job — no Excel patchwork, no double entry.
What the construction ERP covers
Project accounting per site
Each site is its own profit center: revenues, costs, advances and retention tracked per project. A WBS tree maps BOQ items to accounting codes, so the CFO sees real-time margin on every job.
Budget vs actual, EAC forecasts
Tender budget, contract, committed and actual costs and estimate-at-completion side by side. Cost overruns on materials or labour pop up in red the same week, not three months later.
Progress billing and statutory acts
Full chain from BOQ to interim certificate (act 19 in Bulgaria) to client invoice, with quantities and unit prices carried automatically. The system handles reverse-charge VAT for construction services.
Subcontractor accounts and retention
Subcontractor contracts, certificates and invoices link to the site; retention (typically 5-10%) is calculated automatically and parked as a liability until handover. Overdue payables sit on one dashboard.
Materials, sub-stores and crew payroll
Central warehouse and per-site sub-stores with goods receipts, transfers and consumption per BOQ line. Crew payroll is allocated to specific cost codes, so labour cost appears in true site margin.
VAT register and accounting integration
Two-way integration with Microinvest, Plus Minus, Ajour or Business Navigator: sales, purchases, VAT journals and ledger entries flow automatically. The chief accountant stays in their tool.
Who it fits
Mid-size contractors with 5-50 sites
General contractors juggling parallel jobs who cannot wait for a quarterly close. The system delivers a daily cash-flow and material-overrun cut per site, so finance stops chasing data.
Investors and developers
Residential and mixed-use projects with multi-phase sales. The ERP ties budget, unit sales, customer advances and contractor payments together. You see what each square meter costs and earns.
Infrastructure and utility contractors
Long public tenders with phases, interim payments and complex BOQs. The system holds contracted price, planned quantities, what is certified today and what is left to handover.
How we build it
We do not resell someone else's SaaS. We build a custom ERP system for construction on a proven stack: PostgreSQL for financial data, .NET or Node.js for business logic, React/Next.js for the UI, React Native for on-site mobile. A document layer stores BOQs, contracts, certificates and digitally signed PDFs.
We start with one or two days in your finance office and with a project manager, mapping how one site flows from tender to handover and where information leaks between site and accounting. From that map we lock the MVP scope: project accounting, BOQ-to-act-to-invoice, subcontractor accounts and the VAT register.
We integrate with your accounting platform (Microinvest, Plus Minus, Ajour, Business Navigator) and with the tax authority for e-invoicing. Reporting is your choice — Power BI or native dashboards. Go-live happens in stages: pilot site first, then full portfolio, then accounting integration. See our API integrations, custom ERP development and software development services.
Why Saitami for your construction ERP
Cash-flow accuracy
Average improvement in per-site cash-flow forecasting six months after go-live, on real client data from contractors and developers.
Faster month-end close
Achieved via automated BOQ-to-certificate-to-invoice flow and two-way sync with the accounting platform — no manual journal reconciliation.
Starting investment
Fixed price for the MVP phase. No per-user licensing, no hidden subscription. You own the system from day one.
A construction ERP pairs with our broader Software for construction companies (operational layer for sites and schedules) and with CRM for real estate on developer projects.
Frequently Asked Questions
How is a construction ERP different from a regular ERP?
A regular ERP thinks in warehouses, orders and invoices. An ERP system for construction thinks in projects: every site is a profit center with budget, BOQ, contract, interim certificates, retention and reverse-charge VAT. Without that project layer a generic ERP cannot answer "how much are we earning on site X today".
Does it integrate with accounting software?
Yes, and that integration is a precondition for go-live. We build two-way connectors to Microinvest, Plus Minus, Ajour and Business Navigator via API, file exchange or direct database hand-off. Sales, purchases and VAT journals flow automatically. The chief accountant stays in their tool while the ERP runs operations across sites.
Can it handle multiple sites with different investors?
Yes — that is what it is built for. Each site has its own investor, contract, BOQ, certification schedule and currency on international projects. Confidential terms on one project are invisible on another. Directors see a consolidated portfolio dashboard while site managers see only their own numbers.
How much does an ERP system for construction cost?
An ERP system for construction starts from EUR 7,200 for an MVP at a contractor with 5-10 sites and typically lands between EUR 22,000 and EUR 48,000 for a general contractor with 20+ parallel projects, retention handling and accounting integration. Pricing is fixed against scope, paid in milestones, no per-user fees.
Ready for real control over every site?
Book a 45-minute free consultation. We walk through one of your sites, demo our ERP system for construction live and leave you with a phase-one plan at fixed price and timeline.
Book a consultation and demo →