Drainage Build Over Agreements in
Ewell
Extending over or near a public sewer in Ewell needs approval from Thames Water, entirely separate from planning permission itself. Getting the structural detail right the first time keeps this fast, without cutting corners.
Get StartedThe Real Process Explained For Ewell
Getting Thames Water’s approval for a Ewell build over agreement means submitting real structural detail, not just a general description, showing exactly how the foundation design accounts for the sewer’s presence.
For some Ewell projects a CCTV survey forms part of that submission, for others it doesn’t, Thames Water’s requirement depends on the individual site. We’re upfront about which applies before any work starts.
This approval runs alongside your Ewell planning permission, not instead of it, both are genuinely needed for a project that involves building near a public sewer.
CCTV Survey Arranged
Where it’s genuinely required, not as standard
Structural Detail
Foundation design that actually satisfies the sewer body
Design Detail
Drawings that match what’s actually built
Fast Turnaround
Without cutting corners on the detail
How We Help in Ewell
For Ewell projects, we establish the real picture first, exactly where the sewer runs, what’s being proposed, and what Thames Water’s specific requirements are for a site like this.
Once that’s clear, the submission gets built around what Thames Water will actually assess, with a CCTV survey arranged only where it’s genuinely called for.
Given how much attention to detail Thames Water expects for a Ewell build over approval, we stay engaged throughout, right up to a decision.
Why Ewell Projects Get Thames Water’s Attention Right
Every Ewell submission to Thames Water gets checked properly before it goes in, since a poorly prepared application slows down the fast turnaround we’re aiming for.
Being honest about whether a Ewell project needs a CCTV survey, rather than assuming either way, keeps both cost and timeline realistic.
Whatever a Ewell project actually involves, structural detail, design detail, or both, we prepare it properly for Thames Water from the outset.
Getting architectural drawings prepared for a Ewell extension? Worth flagging early if the sewer route affects the design.
Get Your Build Over Agreement Started
Drainage Build Over Agreement FAQs for Ewell
Is a build over agreement the same as planning permission in Ewell?
No, genuinely separate. Planning permission comes from your local council, while a build over agreement for Ewell comes from Thames Water, both can be needed for the same project.
When does Thames Water require a CCTV inspection in Ewell?
Not always, it depends on the specific site. Thames Water sometimes requires a CCTV survey for Ewell projects to confirm the sewer’s exact route and condition, but not as a blanket rule.
Who approves a build over agreement in Ewell?
Yes, Thames Water is the relevant sewerage company for Ewell, and their approval is required before building over or near a public sewer.
How detailed do my Ewell drawings need to be for build over approval?
Genuinely detailed, Thames Water needs to see exactly how the foundation design for Ewell accounts for the sewer’s presence, not a general description.
What’s a realistic timeline for Thames Water to approve a Ewell project?
Timelines vary by workload, but a properly prepared Ewell submission to Thames Water moves faster than one that needs revisions.
What does the first consultation cost in Ewell?
The initial Ewell consultation is free, you’ll know the real requirements before committing to anything further.