Custom. Template-free. Uncompromising.
Cornerstone Websites for Maximum Performance and Flexibility
We build modern WordPress websites with Cornerstone – fast, scalable and perfectly tailored to your business.
Start your project
E-Scooter Portal
- Web design
- Online Marketing
- Consulting
- SEO
- Development
- Graphic design
- Content
- Pflege & Support
CARFOTEC
- Social Media Marketing
- Web design
- Online Marketing
- Consulting
- Development
- Graphic design
- Content
- Pflege & Support
Syron Tires
- Web design
- Online Marketing
- Consulting
- SEO
- Google Ads
- Development
- Graphic design
- Content
- Onlineshop
SUSI&James GmbH
- Web design
- Consulting
- SEO
- Development
- Graphic design
- Logodesign
- Content
- Brandbook
Success stories
Our clients in the spotlight
Why Cornerstone?
Cornerstone is one of the most powerful page builders for WordPress. It enables clean implementation of complex layouts while keeping performance fully under control.
- Maximum design flexibility
- Clean code for better performance
- Scalable for growing projects
- Ideal for custom requirements
Why 1Plus Agency
We combine design, technology and marketing into one cohesive solution. We don't rely on off-the-shelf templates — we build websites that fit your company exactly.
- Experience with complex WordPress projects
- AI processes content and data automatically
- Custom implementation, not templates
- Personal support and clear processes
Cornerstone Agency
What we build for you
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Custom web design
We design your website to match your brand and target audience.
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Responsive design
Optimised for every device — from mobile to desktop.
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Performance optimisation
Fast load times for better user experience and rankings.
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Cornerstone development
Clean, flexible implementation directly in the page builder.
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SEO foundation
Technical foundation for better visibility on Google & co.
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APIs & integrations
Connection to CRM, tools and external systems.
Projects
Le Géant
- Web design
- Online Marketing
- Consulting
- SEO
- Development
- Graphic design
- Logodesign
- Pflege & Support
- Onlineshop
Intellispot.de Onlineshop
- Web design & Development
- Web design
- Consulting
- SEO
- Google Ads
- Logodesign
- Content
- Onlineshop
SAP Arena
- Online Marketing
- Graphic design
- Content
- Druckvorbereitung
- Pflege & Support
- Imagevideo
Odenwälder Baumaschinen GmbH
- Web design
- App Entwicklung
- Development
- Content
- SEO OnPage Optimierung
- Onlineshop
ADLER Immobilien Investment
- Social Media Marketing
- Web design & Development
- Online Marketing
- Graphic design
- Content
- Pflege & Support
Nucleus Biotech GmbH
- Web design
- SEO
- Google Ads
- Development
- Graphic design
- Logodesign
- Content
- SEO OnPage Optimierung
- Onlineshop
KWG
- Web design
- Online Marketing
- Consulting
- SEO
- Development
- Graphic design
- Content
- Pflege & Support
- Onlineshop
Cronjob Manager
- Social Media Marketing
- Software Entwicklung
- Web design
- App Entwicklung
- Online Marketing
- SEO
- Content
- Pflege & Support
E-Bike Mieten
- Social Media Marketing
- Web design & Development
- Online Marketing
- SEO
- Graphic design
- Content
- Brandbook
- Pflege & Support
E-Scooter Portal
- Web design
- Online Marketing
- Consulting
- SEO
- Development
- Graphic design
- Content
- Pflege & Support
CARFOTEC
- Social Media Marketing
- Web design
- Online Marketing
- Consulting
- Development
- Graphic design
- Content
- Pflege & Support
Intellispot®TV
- Social Media Marketing
- Web design
- Online Marketing
- SEO
- Google Ads
- Development
- Graphic design
NYX Hotels
- Social Media Marketing
- Online Marketing
- Consulting
- Graphic design
- Content
- Imagevideo
L&W Compressors
- Software Entwicklung
- Web design
- App Entwicklung
- Consulting
- Graphic design
- Content
- Pflege & Support
Axel Reiser
- Social Media Marketing
- Web design & Development
- Consulting
- SEO
- Google Ads
- Graphic design
- Logodesign
- Pflege & Support
Syron Tires
- Web design
- Online Marketing
- Consulting
- SEO
- Google Ads
- Development
- Graphic design
- Content
- Onlineshop
SUSI&James GmbH
- Web design
- Consulting
- SEO
- Google Ads
- Development
- Graphic design
- Logodesign
- Content
- Brandbook
- Visitenkarten
Business Center Mannheim
- Social Media Marketing
- Web design & Development
- Online Marketing
- SEO
- Google Ads
- Graphic design
- Content
- Pflege & Support
Merkur Akademie
- Social Media Marketing
- Web design
- Online Marketing
- Consulting
- Graphic design
- Content
bloom’s
- Social Media Marketing
- Web design
- App Entwicklung
- Online Marketing
- Consulting
- Development
- Graphic design
Hochschule Worms
- Web design
- Online Marketing
- Consulting
- SEO
- Graphic design
- Content
- Pflege & Support
Leonardo Hotels
- Social Media Marketing
- Online Marketing
- Consulting
- Graphic design
- Content
- Imagevideo
Added value
Your benefits with a Cornerstone website
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Full control over content
Stay in full control of your content at all times. You decide what is shown, when it is published and how it appears — flexibly, securely and exactly the way you want.
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Quick updates without a developer
You can make changes yourself any time — no developer needed. Updating content, creating new pages or publishing changes is quick, simple and happens right inside the system.
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Clear, structured site architecture
A clear, structured site architecture helps users find their way quickly. Content is logically organised, easy to reach and supports SEO performance at the same time.
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Better conversion rates
Optimised content and clear structures lead to more enquiries and conversions. Visitors find what they're looking for faster — and are guided towards taking action.
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Future-proof solution
With a future-proof solution you stay flexible and ready for new requirements. Your website grows with your business and can be extended or adapted at any time.
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Scalable for growth
Your website grows with your company. New content, features or pages can be added flexibly any time — without limits or complicated migrations.
Reviews
Very professional agency. We have been working together for years and have received both perfect consulting in brand management and marketing as well as fast results. Every request on our side — whether video, print or digital — could be covered immediately! 100% recommendation 😊
Alisa Resic
A very professional advertising agency. I had few ideas and little concept for my website, but I was excellently advised and ended up with a brilliant homepage. I can only recommend them 😍
Cagri Citak
The most creative digital agency I have ever worked with. It was a privilege to see them at work.
Lion H
The consulting, support and final implementation of our homepage and CI was excellent from A to Z. Very good and fast communication with great results at the project's conclusion. As a medium-sized company, we are happy to be a 1Plus customer and warmly thank them for the wonderful collaboration!
Marco Groß
A great advertising agency with an outstanding team. Very personalised consulting, excellent in SEO and very fast creation of flyers and brochures. We were thoroughly satisfied and the collaboration was a pleasure.
Patricia Göbel
Highly competent agency. Great team, excellent consulting and fast implementation. We were very satisfied.
Simone Schleinig
Finally an agency that does what it promises. Results are TOP! We are more than just satisfied. Highly recommended!
Evrim Dagdelen
I was welcomed by a very competent team that took care of all my questions and wishes. My website turned out beautifully. I really like the intro when the page loads. 1Plus Agency from Mannheim has truly exceeded my expectations! Very satisfied — will gladly work with them again.
Alexander Zelch
We had a new logo created. The result turned out really well. We are now having more brochures and a website created by 1Plus Agency from Mannheim and look forward to the continued collaboration. Many thanks!
George Neagu
A very friendly and professional team that listens carefully, acts in the customer's interest and provides extremely valuable tips from an expert perspective. Accordingly, we are very satisfied with the result.
Michael Ehret
1PlusAgency was recommended to me by a business partner. Today, a very competent team takes care of me and the service and work are very, very good. 1PlusAgency is highly recommendable!
Sertograph
Extremely professional! A very smart agency. Always on time and on budget so far. Top!
Jan Veith
Definitely my first port of call for media marketing and social media management.
Kevin Boles
Highly competent agency. Great team, excellent consulting and fast implementation. We were very satisfied.
Simone Schleinig
Professional consulting! Will gladly work with them again!
Boris Pastemak
Collaboration
How your new website comes to life
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1
Analysis
Define goals, target audience and requirements
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2
Concept
Develop structure and design
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3
Implementation
Technical development of the website
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4
Optimisation
Improve performance, SEO and UX
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5
Launch
Your website goes live
Appointment
Contact
Got questions? We're ready to help!
Grab an appointment or send us a message. We look forward to a lively exchange with you – straightforward, but always professional.
Good to know
Cornerstone FAQ
What is Cornerstone?
Cornerstone is a powerful page builder for WordPress that lets you build custom websites flexibly.
Why Cornerstone over other builders?
Cornerstone offers more control, better performance and higher flexibility than most drag-and-drop kits.
Can I edit content myself?
Yes — content can be edited easily any time, no coding skills required.
How long does implementation take?
It depends on project scope — typically between a few weeks and several months.
Do you also support existing websites?
Yes — we optimise, extend or rebuild existing sites.