Start free today

Plan & award construction
projects — the smart way

The intelligent platform for property owners and contractors.
Fair prices. Secure payments. Full transparency.

Register for freeHow it works
MVP live

Hammerpreis is live as an MVP. Core features — AI quote generation, price comparison, site diary, and contractor matching — are available in production. Additional modules will follow throughout 2026.

For Property Owners

Plan construction projects smartly — from concept to secure payment.

1

Describe your project

Describe your construction project or upload an existing quote. Our AI instantly creates a detailed bill of quantities with market prices.

  • Free text or PDF upload — AI automatically identifies all trades and line items
  • VOB-compliant service descriptions with regional market prices
2

Compare quotes

Qualified contractors price your project. You compare all quotes transparently in the price comparison.

  • Only verified businesses with master craftsman certification, insolvency check, and reviews
  • Price comparison with color coding: affordable, fair, or overpriced — at a glance
3

Build with full control

Commission directly, track progress in the site diary, and release milestones after acceptance.

  • Site diary with photos, materials, and daily reports in real time
  • Payment only after acceptance — transparent milestones for both parties
Start free as property owner
The story behind it

Why we built Hammerpreis

After over €60,000 in damages during my own renovation, it was clear: we need a platform that brings property owners and honest contractors together — with fair prices, transparency, and security for both sides. That's why we tested Hammerpreis on our own house project first. Patient Zero.

Michael Hermann
Michael HermannFounder & CEO

The best of both worlds

Hammerpreis isn't just contractor matching. Before you even request a quote, you already know what your project will cost and what it should include.

Full transparency before the first contractor
  • AI bill of quantities with market prices — you know upfront what it will cost
  • Price comparison shows at a glance who's pricing fairly and who's not
Secure payments for both sides
  • Payment only after acceptance — per milestone, not upfront
  • Every step documented: site diary, photos, and acceptance reports

What the platform offers

25 features for your construction project. Click "Learn more" for details.

AI Quote Generation

Generate a VOB-compliant bill of quantities with market prices using AI.

  • Automatic trade identification (structural work, plumbing, electrical, painting, etc.)
  • VOB-compliant service descriptions with quantity calculations
  • Regional market prices based on current data
  • Export as GAEB-XML for common tendering software

PDF Import & OCR

Upload an existing quote — even scans. AI extracts all line items.

  • OCR text recognition for scanned documents
  • Automatic assignment to trades and line items
  • Detection of missing items and inconsistencies
  • Comparison with market prices for plausibility checks

Site Diary

Daily documentation: reports, photos, materials, personnel — in real time.

  • Daily reports with free text, photos, and weather data
  • Record deployed personnel and materials
  • Chronological view and search function
  • Export as PDF for insurance, financing, and building authorities

Price Comparison

Property Owner

Compare all quotes at a glance — with min/max and color coding.

  • Min/max/average per line item at a glance
  • Traffic-light system: Green = fair, Yellow = slightly above market, Red = significantly above market
  • Sort by trade, total price, or individual line item
  • PDF export of the price comparison for construction meetings

Contractor Matching

Property Owner

Find the right businesses — automatically by trade, region, and rating.

  • AI-powered matching: Trade, distance, capacity, and rating
  • Only verified businesses with master craftsman certification and trade registration
  • Insolvency check and credit assessment of all businesses
  • Direct inquiry or invitation to submit a quote

Milestone Payments

Payment per milestone after acceptance. Transparent and traceable for both parties.

  • Milestones are agreed upon together at contract award
  • Release only after digital acceptance of the milestone
  • Traffic-light system: Green = paid, Yellow = due, Red = overdue
  • Automatic payment reminders and receipts via email

Invoice Generation

Contractor

Create professional PDF invoices — directly from the contract.

  • Automatic transfer of line items, quantities, and prices from the contract
  • Progress and final invoices per VOB/B
  • Professional PDF layout with your own logo
  • Invoice archive with search and status tracking

Construction File / Project File

All documents, photos, reports, and events of a construction project — in one file.

  • Central timeline of all project events: photos, documents, acceptances, change orders
  • Upload, categorize, and search photos and documents
  • Link contracts and quotes to the project
  • Share the project file via email with third parties (read access)

Compliance Tracking

Contractor

Tax exemption certificate, MiLoG, §13b UStG — automatically monitored.

  • Automatic reminder before tax exemption certificate expires
  • Minimum wage compliance documentation for customs authorities
  • Subcontractor declaration (§13b UStG) managed digitally
  • Audit trail: Seamless proof of all obligations

Tender Marketplace

Contractor

Public tenders automatically imported — matching your trade and region.

  • Automatic import from public procurement platforms
  • Filter by trade, postal code area, contract value, and deadline
  • One-click application
  • Push notifications for new matching tenders

Premium Quote Review

Property Owner

Have quotes reviewed by experts: pricing, missing items, risks — with a grading system including explanations and improvement suggestions.

  • Price plausibility: Is each line item within market range?
  • Completeness: Are standard items missing?
  • Risk analysis: Unclear wording or change order risks?
  • Grade (1–6) and clear recommendation for action

GAEB Import / Export

Contractor

Import and export bills of quantities in the GAEB-XML industry standard.

  • Import of GAEB-XML Phase 83, 84, 85, and 86
  • Export for further processing in ORCA, California.pro, ABK
  • Compatible with common tendering platforms
  • Automatic validation of the GAEB structure on import

Saved Searches

Contractor

Save search profiles by trade and postal code — see new matches instantly.

  • Unlimited search profiles per user
  • Combination of trade, postal code area, and distance
  • Daily or instant email notifications
  • Match overview directly in the dashboard

Contractor Directory

Directory of verified contractors — filterable by trade, city, and rating.

  • Filter by trade, city, postal code, and verification status
  • Reviews and reference projects from other property owners
  • Insolvency check and proof of master craftsman certification
  • One-click direct inquiry to the business

Contract Management

Agree on milestones, track progress, conduct acceptance inspections.

  • Milestone timeline with status tracking (Open, In Progress, Accepted)
  • Partial acceptance with digital report and photo documentation
  • Automatic notification for due milestones
  • Overview of all active projects in the dashboard

Change Order Management

Submit additional work as a change order — with an approval workflow.

  • Structured change order form with justification and calculation
  • Approval workflow: Submit → Review → Approve/Reject
  • Automatic integration into contract value and milestone planning
  • Transparent history of all change orders per project

Time Tracking & Materials

Contractor

Track working hours, materials, and receipts per contract — with automatic cost overview.

  • Log hours with start/end times, breaks, and number of workers
  • Book material usage and upload receipts as photos
  • Create material templates for recurring items
  • Automatic cost overview: hours × hourly rate + materials per contract

In-Contract Messaging

Communicate directly within the contract — with read receipts and unread counter.

  • Chat between property owner and contractor directly within the contract
  • Automatic read receipts and unread counter
  • Message history permanently archived in the contract
  • Every message is recorded as an event in the contract history

Photo Inbox

Contractor

Capture photos from your phone and assign them to the right contract or project with one click.

  • Take photos with GPS location directly on the construction site
  • Bulk assignment: Assign multiple photos to a contract at once
  • Optionally add a comment and create an automatic site diary entry
  • Overview by assigned/unassigned — nothing gets lost

Custom Tenders & Bids

Create tenders, receive bids, and compare them in the price comparison.

  • Publish a tender with trade, deadline, and requirements
  • Contractors submit bids with pricing and quote revision
  • Price comparison shows min/max/average of all bids
  • Accept a bid — contract is created automatically

Measurement Reports & Acceptance Protocols

Measurement reports and acceptance protocols as professional PDFs — generated directly from the contract.

  • Create measurement report PDF with all items and quantities
  • Generate acceptance protocol with defect tracking and status
  • Both parties confirm digitally — documented in the contract
  • PDF download and distribution to all parties involved

Push Notifications & Notification Center

New quotes, messages, and status changes — instantly on your phone or desktop.

  • Web push notifications even when the browser is closed
  • In-app notification center with read/unread status
  • Direct navigation: Click a notification to open the relevant item
  • Notification settings individually configurable

Installable as App (PWA)

Hammerpreis on your home screen — like a native app, without the App Store.

  • One click: Install Hammerpreis as an app on your phone or desktop
  • Offline-capable and fast access via the home screen
  • Automatic updates — always the latest version
  • Works on iOS, Android, Windows, and macOS

Contractor Projects

Contractor

Manage your own construction projects with milestones — from acquisition to completion.

  • Create projects and structure them with milestones
  • Track progress, time, and materials per project
  • Archive completed projects
  • Display projects as references on your profile

Reference Projects & Reviews

Contractor

Showcase reference projects and customer reviews on your profile.

  • Publish completed projects as references
  • Property owners leave reviews after acceptance
  • Enhance your profile with trades, qualifications, and references
  • Better visibility in the contractor directory and matching

Open for everyone

These areas are accessible without registration

Tenders by trade

Search by one or more trades — with autocomplete and multi-select.

Current tenders

Filter public tenders by trade — apply directly after registration.

Contractor Directory

Find qualified contractors near you — with reviews, trades, and verification.

Open directory
The Ecosystem

Less paperwork — starting today.
Zero paperwork — starting this fall.

Available nowHammerpreis

AI quote generation from project descriptions
Professional PDF invoices
Digital site diary with photos
Milestone-based project management
Acceptance reports with defect tracking
Contractor matching and marketplace
Time tracking and material tracking per contract
Chat between property owner and contractor within the contract
Photo inbox with GPS and bulk assignment
Central project file with timeline and documents
Installable as app — no App Store needed
Coming Q3 2026

Documata and Optimata

Coming Q3

Generate compliance documents via interview. Safety briefing? Risk assessment? Answer questions, receive your document.

Our Team

The people behind Hammerpreis · Founded February 2026 at our own construction site in Mössingen, Germany

Michael Hermann

Michael Hermann

CEO (Chief Everything Officer)

M.Sc. Computer Science · Dipl. Jurist

LinkedIn
Thorsten Peter

Thorsten Peter

AI Architect

M.Sc. Automation Engineering

Arthur Stark

Arthur Stark

Cloud Architect

Certified IT Specialist

LinkedIn

Open Position

Construction Architect

We're looking for reinforcements!

Apply now

Voices from the pilot phase

Real feedback from property owners and contractors during our pilot phase.

Property Owner

„We had three offers within 48 hours — all transparently itemized. For the first time, we understood what we were actually paying for.“

— Test user
Property Owner

„Payments follow the milestone principle — the contractor only gets paid once we've accepted the work. That gives peace of mind.“

— Test user
Contractor

„Finally no more lead costs. Inquiries come in directly and free of charge — and the clients are serious.“

— Test user
Contractor

„The AI pre-quote was 80% done when I received it. I just had to fine-tune instead of calculating from scratch.“

— Test user
Contractor

„The digital construction file saves me at least 3 hours a week. Photos, protocols, acceptance reports — all in one place.“

— Test user

Ready for your next construction project?

Register for free and create your first quote in under 2 minutes.

Start free now