Housing.
Simplified.
bunt.haus aggregates every major listing site, personalises alerts, and helps renters go from search to signed lease — without the chaos.
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One platform for the whole housing journey.
Bunthaus is an AI-driven housing startup, built to take the chaos out of finding and securing a home.
All-in-One Housing
From discovering listings to settling in, we cover every step of your housing journey in one seamless platform.
AI at the Core
We aggregate listings, deliver personalised notifications, and streamline the entire process — powered by cutting-edge AI.
Built for Renters & Buyers
We empower you to navigate a fragmented market and secure your ideal home, without the usual hassle.
Berlin's rental market is broken.
Lengthy Search Times
Renters spend an average of 4 months searching for a 1–2 room apartment, and up to 12 months for a family-sized unit — with no guarantee of success.
Severe Shortage
A vacancy rate of just 1.5% and asking rents up 12% in 2024 — a significant, growing deficit with new construction far below what's needed.
Fragmented Marketplace
Searchers must monitor multiple marketplaces, with 354+ inquiries flooding each listing within hours. Missing one notification often means losing the apartment.
Lack of Personalisation
Traditional platforms show what's available, not what fits — resulting in irrelevant listings and more compromises for users.
Data derived from IfW Kiel GREIX 2025, ImmobilienScout24 Market Report 2024, IBB Wohnungsmarktbericht 2024, Berlin Hyp Housing Market Report 2025, and WG-Gesucht platform data.
Build your dream apartment.
From listing to notification in minutes.
The Bunthaus Listing Discovery Pipeline runs continuously across every major marketplace.
Monitors marketplaces for new listings.
Crawls and fetches the content of each listing.
Processes listings to extract specific filters, leveraging the latest in GenAI.
Notifies Bunthaus users whose profiles match, cross-channel.
A conservative, bottom-up funnel.
Market velocity: ~275,000 intra-city moves p.a. (7.2% of Berliners) + ~187,971 new arrivals (net in-migration) + ~40,000 new supply → 300,000–350,000 annual search starts. Benchmarked against early Wunderflats, Spotahome, and similar DE aggregators (~1–5k paying users in first 18 months).
Two segments, ~80% of demand.
The market is concentrated in WG/Shared Room and Small Apartment seekers — the primary focus.
Data derived from IBB Wohnungsmarktbericht 2024, Amt für Statistik Berlin-Brandenburg, and Senat household projections.
Priced below every competitor.
Price point optimized for the weighted average of Berlin's search personas.
A healthy LTV:CAC ratio based on real acquisition and retention data.
Covers infrastructure costs and reaches profitability quickly.
Priced lower than comparable tools in the market.
- Basic search filter
- Limited search results
- Limited notifications
- Full search functionality
- Unlimited search results
- Unlimited notifications
- Access to perks
Optimized for the weighted average of Berlin's search personas, a healthy LTV/CAC ratio, infra cost coverage, and a price below every comparable competitor. See "Our Economics" for the live model behind this number.
Berlin-first channels, engineered for efficiency.
Ad Channels
Focus on Berlin-specific Google Search and lifestyle discovery on Instagram.
Organic Word-of-Mouth
A 15% organic word-of-mouth lift on top of every paid channel.
The Efficiency
Optimized UI and reliable listings push conversion 3x faster than legacy sites.
Sources: Statista 2026, JLL Berlin Housing Report, WordStream Real Estate Benchmarks.
Real Bunthaus math, live.
Fixed: CPL €2.70 · 15% organic k-factor · 10% free→Pro conversion · one-time costs €850 design + €200 admin · tech costs from the real infra cost model (single-market defaults). 3-month retention reflects comparable tools cutting average search time ~70%, offset by ~4 weeks of German bureaucratic lag. At these baseline settings, LTV:CAC ≈ 2.0x — below the classic 3x bar, shown honestly.
Beyond Berlin, the math compounds.
ARR = each market's own researched realistic paying-intent pool × its own price × 12 — the figure our internal baseline research flags as "the number to use for valuation conversations," not any single city's ceiling TAM. Berlin & Hamburg & Frankfurt hold €17.99/mo; Munich tests its own €19/mo premium (higher local income supports it — see markets/munich.md). The pre-seed valuation is anchored to Berlin alone; Ring-2 expansion (already researched, not speculative) more than doubles the addressable ARR on top of it.
Three quarters to Go-To-Market.
Foundation
- Alpha: internal development, testing & feedback
- Roadmap: finalize strategy for the next 12 months
- Investment: close pre-seed round
Build & Validate
- Ops & Legal: entity, contracts & compliance
- Beta testing: close user group in Berlin
- Marketing: creatives & setup
- Partnerships: outreach & early LOI
Go-To-Market
- GTM launch: public launch in Berlin
- Marketing: campaigns to drive acquisition & revenue
- User growth: amp up subscribers & activation
- Infra scale: build the Explorer Agent for future growth
Beyond search — the full housing lifecycle.
€50,000 seed round.
SAFE note. €1M valuation cap. 20% discount.
Meet the team.
Chaker Saloumi
Chief Executive Officer (CEO)
Jean-Marc Saad
Chief Technical Officer (CTO)
www.bunt.haus
Let's build the future of housing together.
Website bunt.haus · E-mail bunthaus.de@gmail.com
Get in touch →Supporting detail.
Additional context for anyone who wants to go deeper.
Real-time, AI-vetted, and cheaper.
| Portals ImmoScout24, Immowelt | Trackers Rentslam, Stekkies | bunt.haus | |
|---|---|---|---|
| Alert speed | ~ Minutes–hours | ✓ Real-time | ✓ Real-time |
| Sources | ✕ Own platform only | ✓ 100+ sites | ✓ Relevant / credible platforms |
| Accuracy | ~ Basic | ~ Manual | ✓ AI-vetted listings |
| Perks | ~ Platform-locked | ✕ No | ✓ Provided to all subscribers |
| Subscription price | €20–30/mo | €29–39/mo | €15–18/mo |
Bunthaus Pro is priced ~13% above Immobot.pro (the closest same-mechanism competitor) — a deliberate premium for instant, multi-channel delivery.