A mid-size Peruvian construction firm that digitizes site control saves between 4 and 9% of total project cost. For 4 simultaneous projects at 15 million PEN each, that's 2.4 to 5.4 million PEN recovered annually. The payback on MAGIA / Core at $15,000 runs between 6 and 12 months for firms with 3 or more active projects. The Bronze/Silver/Gold data lake architecture is the same whether you're operating in Guatemala, Colombia, or Peru. When data is unified, problems announce themselves.
If you run a mid-size construction firm in Lima, Arequipa, Cusco, or Trujillo with 3 to 10 simultaneous projects and you're still operating with an Excel logbook, progress photos scattered across WhatsApp groups, and physical progress figures that only the site supervisor knows — this article is your operational guide.
The typical state before digitizing in Peru
A mid-size Peruvian construction firm running 5 simultaneous projects operates with: a physical logbook the site supervisor fills out at end of day, progress photos in an unorganized WhatsApp group, resource tracking in a foreman's Excel file, physical progress reported to management weekly with no cross-verification, and subcontractors billing by progress with no unified verification system.
Add to that: material waste with zero traceability, warehouse theft detected only at project close-out, rework caused by outdated drawings, and budget variances that surface 30 to 60 days after they occurred. Peru-specific complications include: SUNAT integration for electronic invoicing, IGV tax handling on every purchase, and compliance with RNE technical construction standards.
The real case: 100 operating branches in 12 weeks
The documented case involves a multinational distributor with 100 franchises — not a construction firm — but the data lake architecture transfers directly to site control because both systems handle serialized inventory, multi-site operations, and lot-level traceability. Project figures were:
- 13 million legacy rows in SQL Server across 197 inconsistent tables
- 3.6 million rows migrated to Supabase in 48 hours
- 197 snapshot tables, 825 silver views, 75 gold materialized views
- Row-by-row verification: source = bronze = silver = gold
- 100 branches operational in 12 weeks with a multi-tenant pipeline
- Immutable audit log with SHA-256 hash chain
- 28 KPIs in advanced reporting with AI guardrails
For a Peruvian construction firm with 5 projects, the same architecture applies with adjustments: each project is a logical tenant, the warehouse uses lot- and material-level serialization, the logbook is the Bronze layer of the data lake, and executive KPIs live in Gold. Comparable investment: $15,000 to $20,000 for a mid-size construction firm.
The 7 critical modules for a Peruvian construction firm
| Module | Function | Estimated savings |
|---|---|---|
| Digital logbook with photo and GPS | Daily progress traceability | 1 to 3% of project cost |
| Serialized warehouse control | Reduction of waste and theft | 1 to 4% of project cost |
| Physical vs. financial progress | Early detection of variances | 2 to 5% of project cost |
| Subcontractor management | Verification before payment | 0.5 to 2% of project cost |
| Mobile app for site foreman | Voice, photo, and QR entry | Enables all other modules |
| Per-project dashboards with KPIs | Weekly executive visibility | Indirect, decision-support |
| SUNAT integration and electronic invoicing | Automatic tax compliance | Reduces admin errors by 80% |
The most underrated module is physical-vs-financial progress tracking. Most firms handle it manually and reactively, when the right format is weekly with an automatic alert if variance exceeds 7%.
Recommended stack for a Peruvian construction firm
For a firm running 3 to 10 simultaneous projects in Peru:
- Mobile app in React Native or Capacitor with offline-first and background sync
- Backend in FastAPI with PostgreSQL managed on Supabase Pro
- Photo storage on Supabase Storage or S3 with automatic optimization
- WhatsApp bot for progress reports and variance alerts
- Dashboards in Metabase, Lightdash, or custom Next.js frontend
- Geolocation with Mapbox to verify photos were taken at the correct site
- SUNAT integration via certified API for electronic invoicing
- Immutable audit log with SHA-256 hash chain
- Hosting on Hetzner Ashburn or DigitalOcean Frankfurt for optimal latency
Monthly operating cost: $250 to $800 depending on photo and message volume. Compared to international construction SaaS platforms (Procore, Buildertrend) priced at $300 to $1,500 per month — that's 60 to 80% recurring savings with full code ownership.
Why international SaaS doesn't solve the Peruvian construction firm's problem
Procore starts at $375 per user per month on enterprise plans. For a firm with 25 users, that's over $9,000 per month — $324,000 over 3 years. No code ownership, and workflows modeled for US operations that don't fit Peruvian reality: municipal permits, external construction supervision (interventoría), IGV handling on every purchase, and SUNAT-specific obligations.
Buildertrend has the same problem. For a Peruvian construction firm, MAGIA / Core delivers a custom platform in 12 weeks that fits local workflows exactly — with code and data owned by your company, no license lock-in. Your software, not borrowed software.
The ROI calculation, broken down
For a construction firm with 4 simultaneous projects at 15 million PEN each (60 million PEN total annual volume):
- Reduction of waste and theft: 1 to 4%, equivalent to 600,000 to 2.4 million PEN annually
- Better progress control prevents rework: 1 to 3%, equivalent to 600,000 to 1.8 million PEN
- Early detection of budget variances: 2 to 4%, equivalent to 1.2 to 2.4 million PEN
- Subcontractor progress verification before payment: 0.5 to 1.5%, equivalent to 300,000 to 900,000 PEN
- Reduction in administrative planning hours: 30 to 60 hours per month
Estimated annual savings: between 2.7 and 7.5 million PEN. The $15,000 investment (approximately 56,000 PEN at current exchange rate) pays back in under 4 months.
How to get started without halting active projects
The MAGIA / Core implementation phases for a firm with 5 active projects:
- Weeks 1 and 2 — Discovery: interviews with the director, site supervisors, foremen, accountant, and subcontractors
- Weeks 3 and 4 — Architecture: module blueprint, SUNAT integrations, surface of invisible findings
- Weeks 5 to 8 — Build: mobile app, dashboards, integrations with accounting software
- Weeks 9 and 10 — Deployment: parallel rollout on 1 pilot project, site supervisor training
- Weeks 11 and 12 — Autonomy: rollout to all 5 projects, operations manual, formal handoff
Zero downtime. Zero loss of historical data. The pilot project validates every module before scaling. A 30-minute call — no pitch deck, just a real conversation about your operation.
Next steps
If you run a mid-size Peruvian construction firm with 3 or more simultaneous projects and need to digitize your logbook, warehouse, and progress tracking with a custom platform, MAGIA / Core delivers in 12 weeks for $15,000 with the code in your name. For firms with multi-country operations, enterprise compliance requirements, or more than 10 simultaneous projects, MAGIA / Forge at $20,000 extends with security hardening and multi-tenant architecture. Additional context at Wikipedia: Construction management software.