RENOVATION COSTS
IN SECONDS, NOT 2 WEEKS
Your first number with ±15% accuracy. Instantly. Then you can give buyers concrete figures – not "I don't know". Optionally with OSIRIS data loaded automatically.
First Orientation in Seconds
Cost estimate ±15% – extremely fast, not perfect
Optional: OSIRIS Connection
Property data is already there. No copy-paste from CRM.
Partner Who Thinks Ahead
The agent asks what you should be thinking about.
What would a core reno
A cost estimate, not a guarantee. ±15% accuracy. Doesn't replace an on-site contractor visit – but gives you an immediate reliable first number.
THE RENOVATION WAVE IS COMING
The Domino Effect
EU Taxonomy & CSRD – Staggered Obligation, Immediate Impact
Officially, only large corporations (>500 employees) start with ESG reporting in 2025. From 2026, large companies follow (>250 employees OR >€50M revenue). Listed SMEs from 2027.
But beware: Banks and investors are applying ESG criteria to all portfolios immediately.
This means: Even if you're not yet required to report – your buyers and financing banks are. A listing without renovation perspective becomes shelf inventory.
GEG (Building Energy Act)
- •Retrofit obligations on ownership change (§71): Heating replacement, surface insulation
- •Replacement obligation for boilers >30 years (§72 GEG, deadline 2030/2040 for hybrid)
- •Energy certificate becomes a classification feature (EPBD 2024)
The Numbers (2024)
What This Means for Agents
- "Needs renovation" as a side note
- Energy certificate as compliance document
- Renovation = optional
- Buyers ask FIRST about renovation costs
- Energy certificate as sales argument
- Renovation = market imperative
The Opportunity
Those who can quote renovation costs immediately have the decisive advantage:
WHY RENOVATION COSTS ARE SO DIFFICULT
The reality today:
The rigid calculator
Only calculates what you enter. Doesn't think along.
The Excel sheet
You type data that's already somewhere in the CRM.
The contractor
2 weeks waiting time for a first number.
Your gut feeling
Inaccurate. Hard to defend.
What's Missing
An expert who:
- Already knows your property data (optionally via OSIRIS)
- Asks the right questions
- Proactively addresses risks
- Responds immediately
WHY STANDARD AI FAILS
The Trap
You ask ChatGPT: "What does a bathroom renovation cost?"
ChatGPT answers: "Between €8,000 and €25,000 per bathroom."
The problem: This answer sounds helpful, but it's dangerous.
The Known-Unknown Matrix
Known Knowns
"I know the bathroom is 12m²"
Known Unknowns
"I know I don't know what the roof costs"
Unknown Knowns
"I don't know that I know that..."
Unknown Unknowns
"I don't know that there's something I don't know"
HERE IS THE PROBLEM
What ChatGPT Doesn't Know
ChatGPT doesn't know what it doesn't know:
- That buildings from 1965 often have 2-wire electrical systems
- That contractor prices in this ZIP code area are 15% higher
- That riser pipes from this era are often lead
- That the screed might be too thin for underfloor heating
Result: ChatGPT forgets items. Different ones each time.
The Difference
| Standard ChatGPT | Sanierung-MCP |
|---|---|
| Statistical model | Structured checklist protocol |
| Randomly forgets items | Complete checklist |
| Different results each time | Consistent estimates |
| "Something between X and Y" | Broken down by trade |
| Doesn't know your properties | Optional: OSIRIS data integrated |
What "Traceability" Means for Your Business
Traceability instead of dice rolling.
When you ask ChatGPT, it rolls the dice. When you ask Sanierung-MCP, it follows a fixed checklist protocol.
Scenario: Customer asks again in 6 months.
You can explain every number. You can defend every number. That's the difference between a toy and a tool.
Note on consistency: The cost database is updated quarterly (contractor rates, material prices). Estimates may vary slightly after data updates – but always traceable and documented.
AN AGENT THAT THINKS AHEAD
The Concept
We give your AI assistant a brain for renovation costs.
Technically: An MCP tool (Model Context Protocol) that Claude, ChatGPT, or other agents can use.
Practically: You have a conversation. The agent has access to:
- Optional: Your OSIRIS property data (year built, area, condition)
- Current renovation costs (regionally adjusted, quarterly updated)
- Experience knowledge (what's typical for which construction year)
What This Means
- You type data into forms
- Calculator calculates silently
- You forget the riser pipes
- Result is a number
- Different results each time
- You ask a question
- Agent explains and asks back
- Agent: "Have you thought about the riser pipes?"
- Result is a conversation
- Consistent, traceable estimates
AN EXAMPLE CONVERSATION
What Happened Here
HOW THE AGENT CHANGES YOUR DAILY WORK
The Quick Check
New property in inventory. You need a first number for the listing.
- 1.Look up property data in CRM
- 2.Enter into Excel calculator
- 3.Manually format result
- 4.Hope nothing was forgotten
"Hey, what would a modernization of Hauptstraße 45 cost? Medium standard."
Agent: Pulls OSIRIS data optionally, calculates, delivers number with breakdown.
The Guided Review
70s property. Looks okay at first glance, but risk of hidden costs.
The problem with static calculators: They only calculate what you enter. They don't think along.
- Analyzes the construction year
- Proactively asks: "Have you thought about asbestos testing for the floor coverings?"
- Suggests: "With this construction year, we should budget for riser pipes."
Security through contextual knowledge. A review that feels like a conversation with an experienced construction manager.
The Buyer Question
Property viewing. Buyer asks: "What if we also do the roof?"
Without Agent: "I'll need to check." → Momentum lost.
"Add the roof to the estimate for Mozartstraße 12."
Agent:
Agent: "With roof: +€32,000. That puts you at €210,000 total. By the way: With roof + facade you reach efficiency house standard. That could be worth it because of subsidies."
You answer the question immediately AND deliver added value.
Portfolio Check (ESG/Sustainability)
You have 50 properties in inventory. For ESG reporting you need an overview of renovation needs.
- 1.Go through each property individually
- 2.Build Excel monster
- 3.Months later: approximate numbers
"Can you give me a renovation cost overview for all my OSIRIS properties? Focus on energy-related measures."
Agent:
Agent: Goes through all properties, delivers:
- •Sorted by urgency (GEG obligations first)
- •Estimated total need: €2.3M
- •Subsidy potential: up to €450,000
- •Top 5 properties with highest ROI
Portfolio transparency for ESG reporting. Proactive instead of reactive.
WHERE DO THE NUMBERS COME FROM?
Two Data Sources
Optional: OSIRIS (Your Property Data)
- •Year built, living area, lot size
- •Energy certificate (if available)
- •Condition, last renovations
- •ZIP code for regional factors
Without OSIRIS: You provide the data in conversation.
Renovation Database (quarterly updated)
What the Agent Can Do
- Well-founded estimate based on current market data (±15%)
- Breakdown by trade
- Proactive hints based on construction year
- Consistent, traceable results
What the Agent Can't (Yet) See
The Sanierung-MCP works with hard facts (data, construction years, areas). It can't yet see photos of mold in the corner.
Our Safety Logic:
Because the agent can't "see", it calculates conservatively. In doubt, it assumes construction-year-typical risk (worst case), not best case. This protects you from quoting too low to customers.
What the Agent Cannot Do
- Create binding quotes (that's the contractor's job)
- Detect hidden defects (that's the inspector's job)
- Replace on-site inspection
Our claim: The best first number you can get without an on-site visit – with context and explanation.
FLEXIBLY DEPLOYABLE
Two Paths
Option A: With OSIRIS Connection (recommended)
- Property data pulled automatically
- No retyping, no errors
- Portfolio functions available
- Included in OSIRIS package
Option B: Standalone (without OSIRIS)
- You provide property data in conversation
- All calculation functions available
- Just no automatic data import
How It Works Technically
What You Need
- •AI agent of your choice (Claude, ChatGPT, etc.)
- •Sanierung-MCP (us)
- •Optional: OSIRIS account for automatic data import
What You Get
- Agent can calculate renovation costs
- Agent thinks ahead and asks questions
- Consistent, traceable estimates
- Optional: Agent knows your OSIRIS properties
READY FOR CONVERSATIONS INSTEAD OF FORMS?
We're starting with a limited group of agents who want to test the new workflow.
What You Get
- Full beta access (free)
- Live support from the dev team
- Monthly feedback sessions
- Direct influence on feature priority
What We Need From You
- 2-3 test properties per month
- Honest opinion on what's missing
No credit card. No obligation. Just interest.
FREQUENTLY ASKED QUESTIONS
The cost estimates provided by Sanierung-MCP are based on current market data (quarterly updated) and serve as initial orientation (±15% accuracy). They do not replace professional on-site inspection or binding contractor quotes. Subsidy conditions may change; binding verification through KfW/BAFA.