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Built by practitioners: 10 years of retrofit project management plus 30+ years of construction expertise.
The problem: a different tool for every phase – and none of them connect.
“Surveying the existing building means typing everything three times – CAD, energy tool, spreadsheet.”
“A cost estimate that holds up? Spreadsheet DIY with prices from the day before yesterday.”
“Bill of quantities, drawing register, tendering, site supervision – a different program for every phase.”
“For genuine retrofit supervision from concept to handover there simply is no software.”
That is exactly what RENALDO for building professionals is for.
Renaldo comes from practice – not from a drawing board
Not an anonymous software house: Gregor builds Renaldo along the real workflows of architects and engineers. In 60 seconds he explains why. (Video in German.)
Work item
From a database covering more than 20 trades.
× Quantity
From your building and room data.
× Unit price
Real regional contractor rates.
=Costs that hold up – linked to your building.
The work nobody else takes off your hands.
Quantity take-off, bill of quantities, bid comparison, construction schedule — four jobs that normally cost days, all produced here from one configuration.
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 whole residential project – end to end in one app.
Renaldo covers every phase – plan & cost, tender & award, build & settle. No broken handovers, no point solutions. The same three phases guide you inside the app: the task view shows what's next in each one.
Tender & award
Tender from the finished bill of quantities, approach contractors, and compare bids objectively with AI.
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Build & settle
Site supervision with inspection points and defects, plus AI invoice checking against the bill of quantities and awards.
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Complete fee proposals & contracts – in minutes, awarded online.
Produce a complete proposal per project, contract terms included – either from modular Renaldo service blocks (prices taken straight from your works configuration) or as a fee under the German HOAI scale (chargeable costs, work stages, fee zone and rate, and the conversion surcharge). Quantities and prices are pre-filled and editable at any time. The clever part: the costs you quote flow via the basket straight into your client's budget – once they are priced in, proposals get questioned less and signed faster.
- Two costing methods: Renaldo service blocks or the HOAI fee scale
- Basket link: quoted costs land directly in the client's budget
- Payment schedule, appendices & contract wording including the right-of-withdrawal notice, attached automatically
- Sent by email link – the client views & awards without logging in, status per proposal
- Proposal versioning with deltas: a new version with a clear change summary whenever you adjust something
HOAI
Service blocks
Basket
Online award
Your contractor network – across projects, not scattered.
The contractors and consultants who have proven themselves sit in one central supplier library – not scattered across your contacts. Rate every collaboration 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 requests automatically. Anyone who doesn't convince goes on the block list.
- Three-category rating with history & average
- Auto-inclusion of matching suppliers per trade
- Usable across projects · block list for “don't ask again”
Ratings
Auto-inclusion
Across projects
Site supervision that lets nothing slip through.
The digital site diary documents every working day defensibly (with the entry types required by the German VOB) – weather pulled automatically from the German weather service, entries dictated by voice, and a clean, editable AI weekly report at the touch of a button. A critical entry converts straight into a defect; the planned/actual check shows “on plan” or “overdue” per trade. Plus inspection points derived from the configured works, defects with photo and location, and AI invoice checking against the bill of quantities and the awarded contracts.
- Digital site diary: official weather data, dictation, AI weekly report & PDF export
- Inspection points from the works context + defects with photo and location
- Planned/actual against the schedule · AI invoice checking against the bill of quantities & awards
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Buildings, cores, units – cleanly structured.
Model apartment blocks and whole neighbourhoods: buildings with cores, storeys and residential units, each with its own room schedule. Quantities and costs are derived from that structure and scale automatically with the number of units.
- Building → cores → residential units → room schedule
- Quantities & costs scale per residential unit
- Building import per building (IFC, Hottgenroth, EVEBI)
SAM – AI assistant with expert knowledge
Technical questions on German building-energy law, BAFA/KfW funding, building physics and standards – SAM answers in expert terms, in the context of your project.
Exports: PDF, white-label & CSV
White-label PDFs with your logo, CSVs for ORCA, Abbey or Excel – slots into the tendering workflow you already have.
Financing PDF
Exported from the basket with a purpose of use (retrofit, purchase + retrofit, extension) – for you as the professional to validate and sign.
Material selection checklist
Floors, bathroom fittings, tiles and the rest as a variant-specific checklist with live prices and nearby showrooms – worked through point by point.
Funding overview & checks
Match BAFA/KfW programmes and, optionally, check contractor bids for BEG compliance – if you're supporting your clients through it.
Task list
Who does what by when – with owners, due dates, status and reminders across everyone involved.
GDPR & German servers
Servers and database in Germany, files in the EU. Client data exportable or deletable at any time.
Your practice scales – with the safety built in.
Run more engagements in parallel without your liability exposure growing with them. Renaldo carries the audit-proof documentation, your Pro tools travel with you into every project, and white-label exports slot seamlessly into the tendering workflow you already have.
- As many engagements in parallel as you like – separate files, teams and deadlines per job, with no per-project surcharge
- Audit-proof documentation (invoice reconciliation, inspection points, defects with photo and location) – covered if liability is ever questioned
- Premium in other people's projects: take your Pro tools into projects you are invited to
- White-label PDFs + CSV exports for ORCA, Abbey or Excel; GDPR-compliant, servers and database in Germany, files in the EU
From design to handover – without a single break in the chain.
Design & costing, tendering & award, construction & handover – new build and retrofit alike, from single-family homes to apartment blocks. Every work item linked directly to the building and room data.
Costing across every trade – with ready-made bills of quantities and real contractor prices. Every work item linked directly to the building & room data.
Tendering & award
- Contractor portal
- Online contract award
- Bids + AI comparison
- Contractor address book
- Tendering-software / CSV export
Construction & handover
- Construction schedule & dates
- Defect management
- Site supervision
- AI invoice checking
Get started in 3 steps – with the modules you need.
No hidden commitments. Try it first, then book the modules you need – cancel monthly.
Try free for 30 days
The full feature set, no payment details. Take your time to see whether Renaldo fits your workflow.
Expand when needed
All four project modules in the Project Complete package; individually Tender & Account +€99 or Schedule & Quality +€199 a month. Concept included per project, unlock plans from €290.
Try free for 30 days
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All prices plus VAT. Cancel monthly or pay ten monthly amounts for twelve months upfront. Your data stays exportable at any time.
Rather start with the basics? On the Renaldo Start plan you can calculate one own active project as a building professional – and book modules whenever you're ready.
Modules for design and engineering practices.
Start with the base and expand when needed. Modules apply per organisation, cancel monthly or pay ten monthly amounts for twelve months upfront.
Base incl. one internal user · buildings, quantities, cost scenarios, reports
All four project modules, one internal user · incl. procurement, schedule & quality
All four project modules, five internal users · each additional €149 / month
The concept is included in the module: costing, funding, renovation roadmap. Unlock plans from €290 (renovation) or €490 (new build); move into delivery from €990 or €1,490 net, depending on residential units. Commissioned firms pay half on the units. All prices plus VAT.
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Recommend Renaldo – with your personal invite link.
After onboarding you get a personal invite link. Clients who start through it get an exclusive benefit – and you keep a clear view of all your referrals.
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