Start with the property and the scope
There is no single installation price that describes every property. Available space, access, the proposed use and the design all affect the work that must be priced.
For a replacement project, clarify whether the quotation covers the tank, the dispersal field, both, or a specific component. A small repair and a complete replacement are not comparable scopes.
Questions to ask about an estimate
Request a written breakdown of inclusions, exclusions and assumptions. These questions can help make competing proposals easier to compare.
- Are site investigation, design coordination and required filings included?
- Which tanks, pumps and distribution components are specified?
- What excavation, imported material and disposal work is allowed for?
- Are electrical work, access improvements and reinstatement included or separate?
- What completion drawings and maintenance documentation will be supplied?
- Are taxes included, and how will changes be agreed?
Budget guidance is not a site quotation
An early budget can help you decide whether to investigate a project further. It should identify what is still unknown rather than imply the site has already been assessed.
A final proposal should connect the design, agreed scope and site information. If assumptions change, ask for the cost and schedule implications in writing before additional work proceeds.
Prepare for a useful first conversation
Send TTIS the property location, whether this is a new build or existing system, the planned use and your timing. Available drawings and a description of access can help clarify what needs investigating next.
This guide explains cost factors rather than publishing an unsupported Island-wide price range. Ask us about a budget for your particular project.
Official guidance
Check the current official guidance for your project. These references do not replace a property-specific assessment.