CCTV Drain Survey Farnborough | Before You Buy

You've found the house. Offer accepted, solicitors instructed, mortgage in principle sitting in your inbox. The last thing you want is someone suggesting you spend more money before you've even exchanged. I get it. But if the property is in Farnborough and it's more than about fifteen years old, a CCTV drain survey is the one pre-purchase check most buyers skip and the one that bites hardest when they do.

Let me explain what's actually involved, who genuinely needs one, and what the survey tends to find on local properties. Then you can make a call.

Why Farnborough properties deserve a second look

Farnborough and the surrounding GU14 area have a mix of housing stock that throws up specific drainage issues. There's a lot of post-war terrace and semi construction in areas like Cove, South Farnborough, and North Camp, where clay drain pipes were standard. Clay works fine until roots get in, ground shifts, or the joints start to crack with age. Add the volume of infill development and extensions built in the eighties and nineties, and you've got a patchwork of original pipe and later additions that don't always connect as cleanly as they should.

Properties in Rafborough and Southwood tend to be newer, but 'newer' can still mean twenty or thirty years of use with no inspection. Farnborough Park and Farnborough Street have some older stock where shared drainage runs under neighbouring land. That's always worth understanding before you own a stake in it.

What a CCTV drain survey actually does

A camera on a flexible rod goes into the drain access points, usually the inspection chamber or manhole in the garden, and travels along the pipe run. You get recorded footage and a written report. It takes an hour or two depending on the property. There's no digging, no disruption to the property, and you don't need the current owner to prepare anything.

The report will grade any defects it finds using a standard classification system. Grade one is cosmetic. Grade five means the pipe has structurally failed. Anything above grade three is worth negotiating on.

What it tends to find

• Root intrusion, especially from mature garden trees. Common in older Cove and Aldershot Road-adjacent properties where there are large conifers or willows nearby.
• Cracked or displaced clay pipe joints. Often the result of ground movement rather than misuse. The pipe still functions until it doesn't.
• Incorrect falls (a pipe laid without enough gradient to drain properly). This shows up more in extended or modified properties.
• Blockages the current owner may not even know about yet. A partial blockage can sit unnoticed until the new owner fills the house with people.
• Illegal connections, where rainwater from a neighbour's garden or a misconnected downpipe runs into your foul drain. You inherit the problem.
• Collapsed sections. Rare, but not unheard of, especially in properties where a car has been driven over an unprotected drain run.

The two scenarios: survey or skip it

If you're buying a new build in a development that's still under NHBC warranty, a pre-purchase CCTV survey is less pressing. The developer is still on the hook for structural defects and drainage is usually to adoption standard. For everything else on that table, I'd lean toward doing the survey.

The cost of skipping it

A CCTV drain survey costs a few hundred pounds. A collapsed drain repair using no-dig relining, which we carry out regularly across the GU postcodes, runs into four figures depending on access and the length of pipe involved. An excavation job where the pipe is under a drive or a path is more again. And that's assuming you catch it before it backs up into the kitchen.

I've seen buyers move into properties in Mytchett and Ash Vale where the first significant rainfall caused a drain to back up into the utility room. The survey hadn't been done, the blockage wasn't visible on a standard home buyer's report, and the seller was long gone. That's a horrible start to living somewhere new.

The standard home buyer's survey your mortgage lender requires doesn't go near the drains. The surveyor walks the property, checks the roof and the walls, flags damp. Drains are specifically excluded from scope. You need to commission the drain survey separately and specifically.

When the survey finds something: what happens next

If the survey comes back clean, you exchange with confidence and file the report. Job done.

If it finds a grade three or above defect, you have three options: negotiate a price reduction to cover the repair, ask the seller to fix it before exchange, or walk away. All three are legitimate. The survey gives you the information to choose.

We write CCTV reports in plain English with timestamps on the footage so you can share them with your solicitor or use them as the basis for a renegotiation. The footage is yours.

One more thing about timing

Don't leave the survey until the week before exchange. Commission it once your offer is accepted and you're into the legal process. That way if something significant comes up, you have time to get quotes, have a conversation with the seller, and make a proper decision. Ordering it in a panic when you're days from completion limits your options considerably.

Solicitors rarely flag this. Mortgage brokers don't mention it. Estate agents have no incentive to raise it. So it tends to fall to you to ask.

---

Drainsco covers Farnborough and the surrounding GU postcodes, and we carry out pre-purchase CCTV drain surveys seven days a week. There's no call-out fee, engineers are DBS-checked and uniformed, and you'll get a clear price on the phone before we book anything in. If we find something that needs fixing, our remedial drain work carries a 20-year guarantee. Call us and we'll talk through what the property needs.