Septic Tank Surveys · Devon
Septic Tank & Drainage Surveys in Devon
If you're buying, selling or maintaining a property with a septic tank or treatment plant in Devon, we can introduce you to an independent local specialist — covering Mid Devon (Crediton, Tiverton), East Devon (Colyton, Axminster, Seaton, Sidmouth) and Exeter. It costs you nothing, and there's no obligation to proceed. Tell us your postcode and what's going on, and we'll point you to someone who can help.
What Devon homeowners should know
Devon's ground varies a lot within short distances — shallow soil over rock on parts of the moors, heavy clay in the lowlands. Both affect how well a drainage field can disperse wastewater, and it's one of the first things a specialist will check.
Large parts of the county sit within Dartmoor National Park or other protected landscapes. Work on a system here can mean extra planning or environmental checks alongside the usual drainage rules, so it's worth raising this early with whoever you ask to survey or install.
A system that copes fine through a dry summer can struggle once winter rain sets in. If your last check happened in good weather, ask the specialist how they've accounted for that — a dry-weather survey alone won't always show whether a drainage field is close to failing.
Many older Devon properties were built with a septic tank that discharges straight to a stream or ditch, which isn't allowed under the General Binding Rules. Plans to replace or upgrade it should usually be in place within about 12 months. If you're buying or selling, this is something to agree between you as part of the sale — a survey will confirm whether it applies to the system you're dealing with.
What a survey covers
A septic tank survey typically includes locating the tank, checking its condition and capacity, confirming where it discharges to, and assessing whether the system meets the General Binding Rules. A thorough survey will also look at access for emptying and maintenance, and whether the system is reasonably sized for the property. You'll get a written report you can pass to solicitors or buyers.
When you need one
Here's when people usually get in touch:
- Buying a property with a septic tank, cesspit or treatment plant
- Selling one, and need to tell the buyer what you have
- Told by a surveyor, buyer or neighbour that your system may not comply
- Inherited a system and don't know its history
Typical cost
Costs vary by specialist, the size of the system and how easy it is to reach. You'll get a clear quote before any work starts.
Devon questions
Does the tank need emptying before the survey? + −
Often, yes. Many specialists need the tank empty to inspect it properly, and some can arrange emptying as part of the visit for an extra cost. If you know roughly how full it is, mention this when you get in touch.
What do I tell a buyer? + −
By law you need to tell a buyer in writing what the system is, where it is, and how it's maintained. A survey gives you something concrete to base that on, and who pays for any upgrade is then something you and the buyer agree between you.
Do I need planning permission to replace a septic tank in Devon? + −
It depends on where the property sits. Parts of Devon fall within Dartmoor National Park or other protected landscapes, where extra planning or environmental checks can apply on top of the usual drainage rules. A local specialist can tell you quickly whether that affects your property.
Why would a survey done in summer miss a problem? + −
A drainage field that copes fine in dry weather can still struggle once winter rain raises the water table, particularly on Devon's heavier clay. If your system has only ever been checked in summer, it's worth asking a specialist to account for that.
How it works
- Tell us your postcode and what you need — a survey, a repair, or just advice.
- We match you with one independent specialist who covers your area, not a list of several chasing you for the work.
- You deal with them directly from there to arrange and pay for the work.
How we choose specialists
We introduce you to an independent specialist operating in your area who covers the type of work you need. You're under no obligation to use them, and it costs you nothing. See how we make money.