Your stock, prioritised: where building pays off.
Address list in – prioritised opportunities out: Renaldo checks every property against official data for densification, serial retrofit and matching new-build concepts. And runs everything in net rent, not in sale prices.
Cost. Plan. Build. For the whole stock – from one data core.
60 days free · no credit card · GDPR-compliant, hosted in Germany
Built by practitioners: 10 years of retrofit project management + 30+ years of construction expertise.
In the browser, on iOS and Android – the same project status everywhere.
From your stock to a building decision – without the survey treadmill.
Your stock, prioritised
Every address checked automatically: how much building right is unused, which property suits serial retrofit, which concept fits – as a ranked list of opportunities instead of a hundred individual surveys.
Build & retrofit serially
The pre-designed apartment-block concepts of the GdW framework agreement on serial construction, matched automatically to your plots – all the way to the supplier enquiry and a pre-configured bill of quantities.
Run in rent
Viability from net rent × multiple instead of sale prices – including the Section 559 modernisation levy with its caps, plus funding. The view a housing company actually decides in.
Analyse, cost, build — from one model.
The analysis shows where building pays off. The costing runs on real contractor prices. And the tender grows out of the same data – nothing re-entered.
The whole stock in one scan
Address list in, opportunity list out.
Import your stock as text or CSV — every property is enriched with cadastral parcel, planning law and standard land value from official sources and ranked by potential: densification, serial retrofit, concept fit.
Costing without a quantity take-off
Quantities from the building, prices from the market.
You pick the work. The quantity comes from the building and room data, the price from real regional contractor rates. No counting windows, no measuring wall areas.
The bill of quantities you never have to write
Straight from the configuration into the tender.
The configuration produces a tender-ready bill of quantities across all trades — with full item texts, quantities and unit prices. For serial concepts, pre-configured in system construction.
Six tools, one data core.
The whole stock – checked automatically for building opportunities.
Paste an address list or upload a CSV – Renaldo enriches every property with official data (cadastral parcel, site-coverage and floor-area ratios, standard land value, existing built volume) and scores three opportunities: densification (unused building right with a unit estimate), serial retrofit and concept fit. As a ranked list and on the map – and any opportunity becomes a project with one click.
- Import by copy-paste or CSV – units & year built optional
- Three traffic lights per property: densification · retrofit · concept fit
- Ranked list + map view, “Pursue as a project”
Pre-designed apartment-block concepts, matched automatically.
Renaldo knows the concepts of the GdW framework agreement on serial construction and checks them against the development potential of your plot – with supplier, construction method, energy standard, CO₂ figure, number of flats and the margin when buying at the standard land value. Adopt a matching concept directly as a project: building structure and bill of quantities are pre-configured in system construction, and you contact the supplier with a ready-to-send letter.
- Concepts of the GdW framework agreement, checked per plot
- Margin per concept – at the standard land value or the asking price
- Concept adoption with a pre-configured BoQ + supplier enquiry
Which properties suit serial retrofitting.
The suitability check scores every existing building against the criteria of serial retrofitting – building type, residential units, construction era – and shows honestly what speaks for or against factory prefabrication, including a cost anchor per m² of living space. Out of your stock grows the longlist for the next retrofit programme.
- Suitability check per property – portfolio-wide in the analysis too
- Serial retrofit works in the catalogue (façade elements, roof modules)
- Missing data is named instead of silently marked down
Run in net rent – not in sale prices.
Acquisition check or project costing: Renaldo can run the numbers in the letting view – capitalised value from net rent × multiple, supportable land price including purchase costs, and for modernisations the maximum Section 559 levy with its caps, funding and value uplift. For housing companies the rent view is the default, not a detour.
- Capitalised value from net rent × multiple, regional rent assumptions
- Section 559 modernisation levy incl. caps, funding, own share
- Reverse calculation: the rent the project would need to carry
Acquisitions appraised in minutes.
Type an address – Renaldo loads the cadastral parcel, planning law and standard land value from official sources and shows the supportable land price at your target margin, including purchase costs. The densification map colours the neighbouring parcels by unused building right, and the result goes straight to board or supervisory committee as an acquisition memo PDF.
- Supportable price incl. purchase costs, compared to the standard land value
- Densification map: neighbouring parcels by unused building right
- Acquisition memo as a PDF for your committees
Rent roll, maintenance and ESG – where no ERP covers them.
Optionally, the operations module extends into the operating phase: tenancies per residential unit, maintenance with follow-ups, service-charge allocation by floor-area key and an ESG rating per property with an as-is → retrofitted comparison. Deliberately optional – if your ERP does this, leave it there.
- Rent roll, vacancy, avg. € per m² – per property and portfolio-wide
- ESG score with CO₂ per m²·a and a retrofit pathway
- Optional per project – €9 per unit/month, cancel any time
Tools for the whole organisation.
SAM – AI assistant
Expert questions on German building-energy law, funding, modernisation and standards – in the context of the property at hand.
Unlimited users
Technical staff, portfolio management, executives and external planners in the same organisation – no per-seat surcharge.
Funding module
Match and plan KfW/BAFA programmes for new build, modernisation and energy retrofit.
Tendering & award
Bill of quantities with full item texts per trade, radius search and online enquiries to firms – bids come back comparable.
Data room & document storage
Drawings, certificates, contracts and correspondence audit-proof per property – shareable with banks and committees.
White-label export
Reports, memos and exposés in your company’s layout – for board, supervisory committee and banks.
The full lifecycle of a residential building – in one data core.
From analysing your stock and plots through costing, tendering and construction into operation. And the cycle closes: operation feeds the next modernisation – on the same data.
Costing across all trades – with pre-built bills of quantities and real contractor prices. Every work item linked directly to the building and room data.
Analysis & acquisition
- Portfolio analysis (three traffic lights per property)
- Development potential (floor-area & site-coverage ratios)
- Standard land value (BORIS) & cadastral map
- Viability in rent or margin (residual land value)
Design & costing
- Serial concepts (GdW) & suitability check
- Building import (IFC)
- Energy-consulting module
- Funding module
- Section 559 rent levy & viability
- Product sampling
- Apartment-block structure
Tendering & award
- Contractor portal
- Supplier enquiry for serial concepts
- Bids + AI comparison
- Online award
- AVA/CSV export
Construction & acceptance
- Construction schedule & dates
- Site diary & AI weekly report
- Defect management
- Site supervision
- AI invoice checking
Operation
- Tenancy management (rent roll)
- Maintenance & service-charge allocation
- ESG rating with retrofit pathway
- Next modernisation: back into the analysis
Renaldo Housing – one platform fee per residential unit, on a sliding scale.
Housing Start is free: analyse up to 25 properties. For the whole stock there is an annual platform fee: €6 down to €1 per residential unit – the larger the stock, the cheaper per unit. Unlimited users included.