There are a few things to be aware of when attempting to build over a sewer. The first step is to get a build over agreement. Then you’ll need to get a CCTV survey. It may seem like a simple task, but if you want your house to be safe, you’ll need to get the right paperwork in order.

Building a house directly over a sewer

Building a house directly over a sewer can have many implications, from delays in the sale of the property to charges and damages. It’s vital to check whether a building will cause damage and take out insurance before proceeding. A solicitor can organise a Drainage and Water Search to identify whether the sewer is private or not, and can arrange for the necessary ground work and inspections before building.

To avoid causing damage to the sewer, you should ensure that your new foundations are deep enough to avoid it affecting the existing sewer. Ideally, this distance should be at least 500mm. If the sewer is deeper than 2m, you will need to build at least 1.5m above the invert level of the sewer pipe.

If you plan to build over a public sewer, you will need to apply for a Build Over Agreement before you can start work on your new home. Although this wasn’t required until October 2011, it is now compulsory for any property owner who wants to build over a sewer.

To avoid causing damage to a sewer, you should always obtain a Build Over Agreement. It’s necessary to get the consent of the water authority if you intend to construct a structure over a sewer within three metres of it. If you fail to get this agreement, your water authority may remove your structure. However, they will not be responsible for any damages that occur. Typical offenders include conservatories and extensions. If you’re planning to expand your property, you should check the sewage pipes in the area to ensure that you won’t damage them.

Obtaining a build-over agreement

Obtaining a build-over agreement will protect your sewer. This agreement will allow your water company to maintain your sewer. Obtaining such an agreement is a good idea for future owners of your property. However, you need to be sure that your sewer is in good condition before you purchase it.

Before you start building over an existing sewer, the water authority will conduct a survey. A CCTV will be used to determine the condition of the sewer. If the sewer is over 375mm in diameter, Thames Water may have to enter the sewer itself. If you want to get a build-over agreement, make sure to have all the details and drawings ready.

Obtaining a build-over agreement is essential when you are planning to extend your property. If you are planning to build a conservatory, a garden room, or a garage, you should first obtain a sewer build-over agreement. A build-over agreement is vital to avoid blocking a public sewer. If you fail to obtain one, you may be held responsible for any damage caused to the sewer.

Once you have obtained the building consent from the water authority, you can start building over the sewer. This consent ensures that the sewer is properly maintained and accessible. The water authority has the right to take down any structures that block their access. In the event that you fail to obtain the sewer consent before building, the building control department will not sign the completion certificate.

Getting a CCTV survey

If you’re planning on building over an existing sewer, getting a CCTV survey of the underground pipework before building can be a good idea. The process is non-invasive and quick. The survey can also help you determine the location and depth of the pipes. If you’re unsure, contact your local water authority to find out more about the process.

You’ll need to obtain permission from the sewerage company before building over an existing public sewer. The sewerage company will need to see that the work has taken into account the possibility of damage to the pipe. The building should also show that you’ll have access to the sewers for maintenance.

A CCTV survey can also identify drainage systems that aren’t up to date with regulations. These outdated systems can lead to sewage contamination and pollution of natural water sources. If the drainage system is illegal, the new owner will need to replace it. A CCTV survey can also identify problems in the interior of a property, such as initial gaps or cracks.

The CCTV survey can identify the source of a drainage problem and recommend ways to avoid future issues. The most common causes of drainage problems are blockages or collapsed pipes. This can happen as a result of deterioration of materials, tree roots, or accidental excavation. A CCTV drainage survey can identify these problems and help you avoid a costly problem.

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