The strategic house for commercial value creation
Quarterhouse was founded on a simple conviction:
Commercial growth only becomes sustainable when strategy, execution and governance are designed together.
We operate in capital- and board-driven environments where speed, discipline and long-term value must coexist.
Boutique. Senior. Context-specific.
What we stand for
Senior-led engagement
Every engagement is led directly by the managing partner.
This ensures speed in analysis, credibility at board level and clear decision-making.
Context-specific advisory
No generic frameworks.
Every engagement starts with the specific reality of the organisation — ownership structure, market dynamics and governance context.
Strategy and execution aligned
Strategy without execution creates friction.
Execution without direction creates noise.
Quarterhouse connects commercial strategy, governance and performance structures.
Sustainability as value driver
Sustainability is not treated as a separate compliance track.
We integrate ESG, CSRD and climate strategy directly into commercial positioning and long-term value creation.
Our approach
Quarterhouse delivers senior-led advisory across four connected domains.
Together they form the commercial architecture required for predictable and sustainable growth.
Market prioritisation, pricing logic, KPI architecture and board-level decision frameworks.
Scalable commercial structures, forecasting discipline and leadership development for commercial teams.
Alignment, governance and leadership support during restructuring, scaling or post-merger integration.
CSRD, SBTi and climate strategies integrated as commercial value drivers.
The boutique model
Quarterhouse operates as a high-value boutique consultancy.
Instead of scaling through large delivery teams, we focus on a limited number of engagements where senior expertise is directly involved.
This ensures speed in analysis, clarity in decision-making and credibility at board level.
Senior expertise without layers
Quarterhouse engagements are always led directly by the managing partner.
We deliberately avoid traditional staffing pyramids.
Instead, organisations gain direct access to senior strategic expertise and decision-oriented advisory.
This model keeps analysis sharp, communication clear and execution focused.
A curated partner network
Quarterhouse collaborates with a carefully selected network of specialised partners across commercial strategy, data, ESG and transformation.
Key principles of this model:
• Always under the direction of Quarterhouse
• Senior specialists, no junior staffing
• Scalable expertise without loss of quality
• Focus on impact rather than volume delivery
This allows us to combine strategic depth with specialist capabilities, without the overhead of large consulting firms.
Robert Viertelhauzen
Managing Partner — Quarterhouse
Robert Viertelhauzen is a senior executive and advisor with more than twenty years of experience in commercial strategy, transformation and value creation.
He has held Managing Director and CEO roles across international B2B, SaaS, e-commerce and FMCG environments.
His work focuses on:
- private equity value creation
- commercial professionalisation
- buy-and-build and post-merger integration
- governance and KPI architecture
- ESG integration (CSRD, SBTi)
Robert is known for bringing clarity to complex situations and accelerating decision-making at board level.
His leadership experience forms the foundation of the Quarterhouse model:
senior involvement without organisational layers.
Let’s explore whether Quarterhouse can support your situation.
A strategic introduction allows us to understand your context and determine where commercial architecture can create leverage.