Downspout drainage and buried drain installation.

What does downspout drainage address?

Downspouts carry roof water to ground level; an extension or connected line changes where that water goes next. Ask whether the proposal addresses a specific roof-runoff issue or forms part of a wider yard-drainage project.

Sources: NDS, drainage-products manufacturer [1]

What to note before the site visit

From a safe location, note which downspouts are near the wet area and whether they end above ground or enter a buried line. Mention recent gutter, patio or landscape changes. Those observations help explain the question; they do not prove the cause.

• Does the wet area follow rain, irrigation or a different pattern?
• Was a buried line already present, and has it ever worked as expected?
• Do you have earlier plans, invoices or maintenance information?

Questions about a proposed buried line

Ask the provider to identify the route, destination and maintenance access. Clarify whether the line is independent or connects to other drainage components. Confirm who checks whether that connection and outlet are appropriate.

Request the reasons for the proposed arrangement, not a guarantee that burying a downspout will fix every wet area. A roof-runoff line is not a promise of protection against regional flooding.

Separate included work from related work

Gutter repairs, buried drain work, paving, grading and cleaning an existing line may involve different providers or charges. Ask which work is included, what happens if another issue is discovered, and how changes are approved.

Before accepting a proposal, identify who restores disturbed surfaces and provides maintenance instructions. The actual provider supplies the site-specific price and timing.

Related: Yard drain cleaning, repair or replacement? · How to compare yard drainage proposals.