Herengracht 182, 1016 BR Amsterdam
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Trusted Construction Partner

Building structures that stand the test of time.

From custom residential homes to large-scale commercial developments, we bring precision engineering, transparent communication, and uncompromising quality to every project we take on.

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22
Years in Business
340+
Projects Delivered
97%
Client Retention
Construction project
Featured Project
The Meridian Tower
Commercial · Completed 2025
Certified & Insured
Bouwgarant Certified
ISO 9001 Quality
VCA** Safety
€10M Insured
BREEAM Excellent
Our Portfolio
Projects built on precision and pride
Every project tells a story of collaboration, craftsmanship, and commitment to exceeding expectations.
Luxury villa project
Residential · 2025
Keizersgracht Residence
520m²·€2.8M Build
Office tower
Commercial · 2024
The Meridian Tower
12 floors·€18M Build
Vondelpark Apartments
Renovation · 2024
Vondelpark Apartments
34 units·€6.2M Build
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What We Build
Comprehensive construction solutions
End-to-end building services from concept to completion, tailored to your unique requirements.
Residential Construction
Custom homes, villas, and multi-unit residential buildings designed for modern living and built to last generations.
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Commercial & Office
Office buildings, retail spaces, and commercial developments that maximize functionality and reflect your brand identity.
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Heritage Renovation
Restoring listed buildings to their original grandeur while integrating modern systems — preserving history with precision.
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Renovation & Fit-Out
Complete interior transformations, structural modifications, and high-end fit-outs for residential and commercial spaces.
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Project Management
Comprehensive project oversight from planning to handover, ensuring timelines, budgets, and quality standards are met.
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Sustainable Building
Energy-efficient construction using green materials and modern techniques for eco-conscious builds with BREEAM certification.
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Construction workers on site
22+
Years of proven excellence
Why Cornerstone
We don't just build — we deliver on every promise

Our clients choose us because we combine old-world craftsmanship with modern engineering precision. Every project is backed by transparent pricing, dedicated project managers, and a relentless focus on quality.

Fixed-Price Guarantee
No hidden costs or surprise invoices
On-Time, Every Time
98% on-schedule delivery record
Dedicated Team
One point of contact from start to finish
5-Year Warranty
Full structural and systems coverage
Start Your Project
Our Process
From vision to reality in five clear steps
01
Discovery
We listen to your vision, assess your site, and define project scope and budget parameters.
02
Design
Our architects create detailed plans, 3D visualisations, and material specifications for your approval.
03
Permits
We handle all permits, regulatory compliance, and pre-construction documentation seamlessly.
04
Build
Construction begins with weekly progress updates, on-site quality checks, and strict timeline management.
05
Handover
Final inspection, quality sign-off, documentation, and your 5-year structural warranty activation.
340+
Completed Projects
98%
On-Time Delivery
120+
Skilled Professionals
4.9
Client Satisfaction
Expert Team
Meet the professionals behind every project
Our senior leadership brings decades of combined experience across residential, commercial, and heritage construction.
CEO
CEO & Founder
Willem van der Berg
22 years in construction management
Lead Architect
Lead Architect
Katrin Hoekstra
Award-winning residential design
Structural Engineer
Structural Engineer
Henry Mulder
Specialist in high-rise & heritage
Project Director
Project Director
Maren Visser
Operations & client relations
Client Stories
What our clients say about working with us
"We renovated our 1920s canal house with Cornerstone and the experience was seamless. They finished three weeks early, came in under budget, and Willem personally walked us through every decision. After interviewing five firms, choosing them was the best call we made."
MK
Martijn & Karen de Boer
Homeowners, Keizersgracht
"Cornerstone managed our Meridian Tower build from foundation to fit-out. Fourteen months, €18 million, zero disputes. Their weekly reporting was so thorough our investors stopped asking questions — they just trusted the process."
RV
Richard Vermeer
CEO, Vermeer Capital Partners
"Finding a builder who understands heritage work is nearly impossible. Cornerstone navigated the Monuments Commission approvals, reinforced our 400-year-old foundations, and somehow made the house feel brand new without losing a single period detail."
AW
Anna Witteveen
Property Owner, Prinsengracht
Track Record
Numbers that speak for themselves
2024
340+ Projects Completed
On time, on budget
2023
BREEAM Excellent
12 certified buildings
2021
97% Client Retention
Repeat business rate
Since 2010
ISO 9001 Certified
Continuous quality management
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Ready to bring your vision to life?
Whether you're planning a custom home, commercial build, or heritage renovation — our team is ready to deliver. Get a detailed, no-obligation quote within 5 business days.
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