Getting ready to replace an off-mains system
RuralQuotes planning guide · Updated 25 September 2026
A clear description of your existing drainage helps a specialist decide what to ask next and whether a site visit is needed.
Gather what you already know
Look for installation records, service information and drawings. Explain whether you know the system type and how many properties use it. It is fine if some details are missing.
Describe the problem
Explain what has changed, when you noticed it and whether you are replacing an old system or planning new building work. Avoid deciding on a replacement specification before the site is assessed.
Ask about the site assessment
Discuss capacity, access, discharge arrangements, installation disruption and any permissions or compliance checks the specialist needs to investigate. Requirements are site-specific; ask for advice for your exact location.
Separate the problem from the proposed solution
Describe the symptoms and history without deciding that a particular tank or plant must be installed. Tell the specialist about recurring issues, previous repairs, changes in occupancy and planned building work. A site assessment should establish the relevant constraints before a replacement specification is agreed.
Ask about disruption and access
Establish where excavation and equipment will be located, how materials and waste will move through the site and how existing drainage will be managed during the works. Ask what garden, driveway or landscaping reinstatement is included and what is specifically excluded.
Record the responsibilities
Have the quotation identify who checks discharge arrangements, handles any necessary approvals, installs and commissions the system, and provides operating instructions. Ask for a maintenance schedule and the expected ongoing service costs. Keep the final records with your property documents.