Not the heavyweight ERP. Not the next point solution. The third category.
Between heavyweight developer ERPs and a patchwork of phase-specific tools: Renaldo is the lightweight data core that carries the living cost truth across every trade and every phase – one truth from the plot to the sale, instead of five tools with five versions of the numbers.
Built by practitioners: 10 years of retrofit project management plus 30+ years of construction expertise.
Two camps – and the gap in between.
Today the truth that actually matters – what it costs, trade by trade – lives in a spreadsheet. Renaldo closes exactly that gap.
Heavyweight developer ERPs
Powerful back office, a long rollout project, high cost – but they don't carry what a building actually costs across every trade.
Phase specialists
One tool each for costing, tendering or construction – strong on their own, together a patchwork of five versions of the numbers and spreadsheet breaks.
Renaldo · the lightweight data core
End to end instead of heavyweight: real, living contractor prices across every trade and phase, mobile-first, no rollout project. One truth from the plot to the sale.
Six products – one data core.
From the private homeowner to the portfolio investor: six products, each with its own interface and pricing logic for the role – but the same data core. Expert → Developer → Operate map the lifecycle, Home brings private clients in, Contractor equips general contractors doing the work, Crew brings the trades along, and Partner is the ecosystem around it.
Homeowners
Private clients plan a new build or a retrofit with cost certainty – costs, funding, trades and bids in one cockpit.
More for homeowners →Building professionals
Architects, engineers & energy consultants – design and construction supervision on one data core.
More for professionals →Developers
Acquisition → costing → award → construction → sale. Cost truth from day one – new build and retrofit, apartment blocks.
More for developers →Asset managers
Value, operate and report on a portfolio – portfolio view, rent roll, ESG and sale on one data core.
More for asset managers →Energy consultants
From the energy assessment to a costed retrofit – funding, tendering and delivery on the same building data.
More for energy consultants →General contractors
Firms doing the work cost with a hidden margin, manage subcontractors and produce the works contract for the client.
More for general contractors →Cost truth from the very first click.
Renaldo thinks about every residential project from the end backwards: a contractor's invoice is always work item × quantity × unit price. Renaldo determines all three – and turns a rough idea, step by step, into a reliable, tender-ready cost plan.
Work item
Which works? From a database covering more than 20 trades.
×Quantity
How much? From your building and room data.
×Unit price
At what price? Real regional contractor rates.
The cost-certainty indicator tells you at any moment how solid your numbers are – and what is still missing to reach the next level.
What you won't find anywhere else.
All six come out of one configuration. That is why costs, dates and the tender always agree — and why Renaldo can also see what is missing.
Three-click feasibility
All the way to the residual land value.
Type in an address. Renaldo pulls the standard land value, cadastral map and development potential, works out the maximum massing — and shows GDV, margin and the highest land price the scheme can carry.
Costing without a quantity take-off
Quantities from the building, prices from the market.
You choose the work item. The quantity comes from your building and room data, the price from real regional contractor rates. No counting windows, no calculating wall areas.
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.
From ESG baseline to a costed retrofit
Rating, measure, new class.
Energy class and CO₂ per asset — then cost an upgrade at real prices and see which ESG class comes out of it, and what rent uplift § 559 allows.
Five advantages – one number: margin per project.
Built for residential buildings – new build and retrofit alike – rather than retrofitted onto a generic project tool. Every advantage has evidence behind it, and they all end up at the same metric.
Weeks, not months, to a number that holds
AI bid analysis, bid comparison and invoice checking, SAM, multi-source import and online award in one click – one data set across every phase. → Interest and holding costs down.
Real, living contractor prices instead of gut feeling
Prices across every trade, linked to the building data, costing done before you buy, AI checks against market prices. → Fewer overruns, margin & exit you can rely on.
One data core from acquisition to sale
One truth instead of five versions of the numbers, no spreadsheet breaks between costing, award, construction and exit. → Oversight without friction, no risk hiding in the figures.
Mobile-first, no rollout project
Unlimited participants on the same project, SAM as the AI assistant, ready to go immediately instead of months of implementation. → Fast adoption, less hassle.
Replaces ~5 tools, costs about as much as 2–3
One platform instead of a zoo of tools, and no seat fees on Developer & Operate – billed on project value. → Lower tool spend on top.
Materially higher margin per project
Time, cost and stress saved – that goes straight through to the return. For scale: a 1 % overrun on a €2m apartment block is €20,000.
The entire lifecycle of a residential building – in one data core.
From acquisition and development potential through costing, tendering and construction to operation and sale. New build and retrofit, 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.
Acquisition
- Development potential (plot ratio / site coverage)
- Standard land value (BORIS) & cadastral map
- 3D building model
- Feasibility (margin, GDV, residual value)
Design & costing
- Building import (IFC)
- Drawing register
- Energy consulting module
- Building profile
- Funding module
- Financing calculator
- Material selection
- Apartment-block structure
- Neubau
Tendering & award
- Contractor portal
- Online contract award
- Bids + AI comparison
- Contractor address book
- Tendering-software / CSV export
Construction & handover
- Construction schedule & dates
- Site diary & AI weekly report
- Defect management
- Site supervision
- AI invoice checking
Operation & sale
- Tenant management
- Maintenance & billing
- ESG rating
- Unit brochure & data room
- Financing bridge
- Listing export
Today: spreadsheet roulette. Tomorrow: Renaldo.
- Margin leaks away into time and cost — and nobody sees it early enough
- Retrofit costs mis-estimated before the purchase
- Spreadsheets nobody maintains, in three versions per file
- Bid comparison done with a pen and a ruler
- Five tools, five versions of the numbers — breaks between the phases
- Designer, bank, buyer — everyone sees something different
- One data room, one truth
- Cost truth from day one — you do the maths before you sign
- A live picture for everyone involved — no version chaos
- Bid analysis item by item, in 90 seconds
- One data core from acquisition to exit — no spreadsheet breaks
- Designer, bank and buyer all see the same picture
From practice – with the ambition to strengthen local trades.
Years of retrofit experience
We know the typical bottlenecks, the coordination traps and what actually counts on site – not just in a slide deck.
Decades of site experience
Practical know-how from many years on site feeds directly into product decisions and priorities.
Specialists in construction processes – site logistics above all
We think of retrofitting as a sequence with interfaces and logistics. Ronald was previously responsible for, among other things, the site logistics of the German RTL television series “Zuhause im Glück”.
Inventors of the retrofit sprint
Structured intensive phases that get decisions and next steps moving faster – instead of endless planning loops.
We train retrofit coaches
Qualified coaches take the Renaldo method and tooling into their regions – more expertise locally, for homeowners and professionals alike.
Retrofit rate and local trades
We want to raise the retrofit rate in local districts, support local trades and connect quality craftsmanship with digital tools and processes.
GDPR-compliant, hosted in Germany
Your projects, and those of your clients, stay where they belong – in the EU. Made in Hamburg: architecture, energy and software expertise around one table.
The things you were going to ask.
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