Cost, tender, build. Made simple.
Renaldo Contractor is the app for firms acting as main contractor: protect your margin with hidden costing (buying price → mark-up → selling price), manage subcontractors, and produce the works contract for the client – all in one place, without spreadsheet DIY and WhatsApp chaos.
✓ Every Contractor feature, unrestricted, for 60 days – no credit card.
Built by practitioners: 10 years of retrofit project management plus 30+ years of construction expertise.
The problem: your margin lives in your head – and one change request upends it.
That is exactly what Renaldo Contractor is for.
Your margin – calculated, not guessed.
Renaldo Contractor works every line item back from the selling price: your buying price (own labour or subcontractor) plus your mark-up automatically becomes the selling price for the client. Your margin is always visible – to you. The client sees only the selling price.
Buying price
Own labour or a subcontractor's bid – item by item.
×Mark-up
Your standard mark-up, set globally or per line item.
=Selling price
What the client sees – the margin stays internal.
Cost, award, build — without a single handover break.
Tender to subcontractors, check bids against your own bill of quantities, and run the construction schedule with everyone involved.
The bill of quantities you never have to write
Straight from the configuration into the tender.
Your configuration becomes a tender-ready bill of quantities across every trade — with long descriptions, quantities and unit prices. From there straight into the local search and the online request.
The bid comparison that shows the gaps too
Every bid measured against your own bill of quantities.
The bids line up next to each other, item by item. What becomes visible is not only who is cheaper — but what the cheapest bid leaves out, and how much money that leaves open.
The construction schedule that writes itself
And everyone involved keeps it current.
The durations come from the same configuration as the costs. If one task slips, the whole plan follows. Firms report from the portal — via link, no account.
The whole main-contractor workflow – end to end in one app.
Renaldo Contractor takes you through three phases – plan & cost, tender & award, build & settle. No broken handovers, no point solutions. The task view tells you what's next in each phase.
Plan & cost
Capture the works (dictation included) and cost them with a hidden margin – buying price, mark-up, selling price per trade.
Tender & award
Tender to subcontractors item by item, feed prices back in, and keep your network in the supplier library.
Build & settle
Works contract for the client, quote versioning with deltas, site supervision and AI invoice checking.
Capture the works, cost them with a margin – no spreadsheet.
Capture the works – by dictation if you like.
Take down the job: enter the address, record the building data and configure works from more than 20 trades – with quantities from the building model. Or simply speak the works: dictated capture turns your spoken measure-up straight into line items in the costing.
- Works configuration across 20+ trades, quantities from the model
- Dictated capture – speech straight to line items
- Add your own line items freely – works for pure interior fit-out too
Buying price → mark-up → selling price: your margin, costed out of sight.
For every line item you record the buying price (own labour or subcontractor) and your mark-up – Renaldo works out the selling price automatically. The costing overview shows buying price, selling price, margin and contribution per trade and for the project as a whole. The client sees none of it except the selling price.
- Hidden margin per line item – buying price, mark-up and selling price kept cleanly apart
- Standard mark-up as the company default, overridable per line item
- Margin & contribution per trade and overall at a glance
Manage subcontractors – prices flow into your costing automatically.
Tender, check bids, feed prices back item by item.
Tender individual trades or line items to your subcontractors – online, without the WhatsApp chaos. Bids arrive in the portal and AI bid checking compares them item by item. When you award, the subcontractor's price flows back into your costing item by item as the buying price – and your selling price recalculates automatically with your mark-up. Prefer to upload a PDF? The AI reads the line items out of it.
- Request from subcontractors online & award in the portal
- AI bid checking & comparison, item by item
- Item-level price feedback as the buying price – selling price recalculates automatically
Your subcontractor network – across every project.
The subcontractors who have proven themselves sit in one central supplier library – not scattered across your contacts. Rate every engagement in three categories (communication, quality, price fairness), with history and average. For each trade Renaldo suggests your best suppliers; with auto-inclusion they land in matching tenders automatically. Bad experiences go on the block list.
- Three-category rating with history & average
- Auto-inclusion of matching suppliers per trade
- Block list for “don't ask again”
From the works contract to the checked invoice.
The client's works contract – in minutes, awarded online.
Your costing becomes the works contract for the client: a white-label PDF with your logo, a bill of quantities at selling prices (gross), works-contract clauses, a payment schedule and appendices. Sent by email link – the client views and awards online by QR code, without logging in. Sending locks an unchangeable version, and you can see the status per quote.
- White-label PDF with works-contract clauses & payment schedule
- Bill of quantities at selling prices – never buying prices or margin
- Online award by QR link, status per quote
Change requests without rebuilding – with the delta at a glance.
When the client changes something, Renaldo automatically flags the affected line items as “needs re-quoting”. One click sends a tightly scoped re-request – only to the subcontractors concerned, not to everyone. That produces a new quote version with a clear delta view: what has been added, removed or gone up in price? Every version stays traceable.
- Affected line items detected automatically as “needs re-quoting”
- Tightly scoped re-request, only to the subcontractors concerned
- Quote versioning with deltas (added / removed / price change)
Tools that smooth out the working day.
SAM – AI assistant
Technical questions on trades, building physics and standards – SAM answers in expert terms, in the context of your project.
AI invoice checking
Check subcontractor invoices automatically against the bill of quantities and the award – discrepancies visible immediately.
Defects & handover
Record defects with photo and location, work through inspection points per trade, and document handover defensibly.
Construction schedule
Phases, tasks and milestones across every trade – the planned/actual check shows “on plan” or “overdue”.
Exports: PDF, white-label & CSV
White-label PDFs with your logo and CSV exports – slots into the billing workflow you already have.
Photo gallery & document storage
Site photos by trade and phase plus drawings, certificates and contracts – audit-proof, in one place per project.
Task flow
The main-contractor task flow walks you through step by step: building data, works, costing, works contract – nothing forgotten.
GDPR & German servers
All project and customer data hosted in Germany. Exportable or deletable at any time.
Renaldo Contractor.
60 days of full access, no credit card. Then you decide.
- Main-contractor costing with a hidden margin (buying price → mark-up → selling price)
- Tender to subcontractors & feed prices back item by item
- Supplier library with ratings & auto-inclusion
- Works contract as a white-label PDF, awardable online
- Quote versioning with deltas & dictated capture of the works
- AI invoice checking, defects, construction schedule & SAM