What a good drain survey report includes

Last updated: 2026-09-12 · 9 min read · How-to

A CCTV drain survey is only useful if you leave with evidence you can act on — not a verbal “looks fine.” Whether you are clearing a slow drain or buying a house, the written report and footage pack are the product. This guide lists what a solid UK domestic report should contain, how to read defect coding, and when to send the engineer back for more detail.

What you’ll learn

Minimum report checklist

Ask for these before you book. If an engineer cannot supply most of them, get another quote.

Section Why it matters Acceptable if missing?
Site address, date, engineer / company name Ties the survey to the property and visit. No
Which runs were surveyed (and which were not) Stops “all clear” claims on pipes they never entered. No
Access points used (chambers, WC, rodding eye) Explains reach limits and missing branches. No
Defect list with distance from a named chamber Lets a second firm quote the same repair without digging blind. No for anything beyond a soft clean
Still images or timestamped video for each significant defect Evidence for insurance, sellers, and second opinions. Rarely — insist on at least one for structural finds
Recommendations ranked by urgency Separates “jet and monitor” from “excavate soon.” Should be present in plain English
Private vs water-company boundary note (where known) Avoids paying for someone else’s asset. Often incomplete — ask them to state uncertainty
Rule of thumb If you cannot hand the report to another drainage firm and get a comparable repair quote, the pack is too thin.

Defect coding and distances

Good UK surveys often use MSCC-style (or equivalent) condition coding: cracks, fractures, collapses, displaced joints, roots, grease/fat, scale, and infiltration. Exact code letters vary by software; what you need in plain English is:

Distances matter because a “root problem under the patio” without a metre mark forces guesswork. If the report only says “roots in the main run,” ask for the chainage before you approve lining or excavation.

Footage pack: what to keep

Keep the files until works are finished and any retention or conveyancing window has closed. Re-CCTV after jetting or lining should produce a second pack so you can prove the line is clear.

Recommendations that are actually useful

A useful recommendation section maps findings to next steps without upselling every crack into a dig:

  1. Clean only — grease, silt, soft debris; then re-CCTV if flow was the only complaint.
  2. Cut / descaling + monitor — roots or scale where the pipe still looks structurally sound.
  3. Patch, liner, or point repair — localised structural defects with enough remaining pipe integrity.
  4. Excavate / replace — collapse, severe deformation, or defects that lining cannot reliably fix.
  5. Further investigation — blocked access, flooded line, or unknown layout beyond camera reach.

Be wary of a one-option sales pitch with no alternative. Ask what happens if you only jet first, and what the cost risk is if that fails.

Pre-purchase and conveyancing packs

Buyers usually need more than a homeowner unblock report. Aim for:

Solicitors and lenders do not always demand a CCTV survey, but when drains are raised — flooding history, older property, or a known shared system — a coded pack is far more useful than a verbal all-clear. Book early in your survey window so you have time for a second opinion.

Shared drains Private laterals and water-company sewers meet at a boundary that varies by property. If the report is unsure, treat that as a flag to check with the water company or a drain specialist before you accept liability for a repair.

Red flags — send it back

How to brief the engineer before they arrive

  1. List symptoms (slow baths, gurgling, smells, outdoor flooding) and which fixtures are affected.
  2. Say whether this is maintenance, insurance, or pre-purchase — the report tone should match.
  3. Ask which coding standard or report software they use and whether a sample anonymised report is available.
  4. Confirm VAT, chamber lifting, and digital delivery are in the price — see our CCTV drain survey cost UK guide for planning bands.

Browse DrainCam UK listings for local engineers, or contact us if a provider is missing.

FAQ

Is a PDF summary enough without video?

For a minor grease clean, sometimes. For structural defects, purchase decisions, or insurance, keep the video. Stills alone are a weak substitute if distances and context are unclear.

Do all good surveys use the same defect codes?

No. Software and house styles differ. Insist on plain-English descriptions plus location. Codes without explanation are hard for buyers and second contractors to use.

Should I pay for a re-CCTV after jetting?

Often yes if you paid for a survey to prove condition. Cleaning can hide or reveal structural issues; a short re-run documents the result.

Are listings on this site paid?

Featured or lead placements are labelled when used. We may earn a lead or referral fee if you request a quote from a listed engineer.

Related

Disclosure: DrainCam UK may earn a lead or referral fee if you request a quote from a listed engineer. This guide is general UK homeowner and buyer guidance, not a substitute for a site-specific survey or legal advice on drain ownership.