London’s Trusted Build-Over Agreement Specialists
Planning to build over a public sewer?
Our expert build-to-agreement services handle drawings, applications, and Thames Water approval to keep your project compliant and delay-free. At Plansing, we help homeowners and developers across London secure approvals quickly with expert-led build-to-agreement services. With 10+ years of experience and 50,000+ completed projects, we know exactly how to get it approved without the back and forth.
What is a Build Over Agreement?
A build-over agreement is an official permission from the local water authority (such as Thames Water) allowing you to build over or near a public sewer. If your project affects existing drainage, you must apply for a build-over agreement before starting construction. This is a legal requirement across London and the surrounding boroughs. At Plansing, we manage the entire build-to-suit agreement application process, ensuring full compliance with Thames Water regulations. Whether it’s a new build or a retrospective build over an agreement, we make sure your project avoids damage risks, delays, and costly issues in the future.
Get Your Build Over Agreement Approved
Don't risk delays, rejection, or costly mistakes. With Plansing, you get expert support, accurate drawings, and a smooth approval process from start to finish.
Apply With Confidence
Submit your build over agreement with professionally prepared documentation.
Get Faster Approvals
Hire a specialist to reduce delays and improve approval success.
Speak To An Expert
Get professional guidance tailored to your project requirements.
WHY CHOOSE US
Our Best Core Values
Online Guidance
You can access expert online guidance through our well-qualified architect. Discuss your expectations related to your space and what you want to make out of it.
Customised Options
Build your home with us; tell us your expectations. Whether it's a new build or an existing one, we provide top-notch contemporary services turning them into reality.
Approval Guaranteed
Our architectural company is renowned for getting planning approvals promptly. From initial documentation to final approval, we handle every step.
Stand Out Designs
Our plans, elevations, and sections are designed from the start to the final stage. We provide built-environment design for living a quality life.
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How do I apply for a build-over agreement?
You need to submit a build-over agreement application with drawings and drainage details to your water authority. We handle the full process for you.
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Can I build without a build-over agreement?
No. Building without a building-over-sewer agreement can result in legal action or forced removal.
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What is a retrospective build over agreement?
Its approval is requested after construction is already completed. It's more complex and not always guaranteed.
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Do I need drawings for a build-over agreement?
Yes. Accurate build-over agreement drawings are essential for approval.
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How much does a build over agreement cost?
Costs vary depending on the project and authority. Contact us for a quick quote.