Landscaping and Outdoors · Irrigation and Drainage

Downspout Drain Line Installation Cost, Permits and Who Does the Work

First-time installation of downspout drain line on a single-family home, typically handled by a drainage contractor.

Model reviewed August 2026

Typical cost

$1,400

National, standard scope

Range

$500 – $3,600

Low to high scope

Trade

Drainage contractor

DIY difficulty 3/5

Permit

Scope dependent

Depends on how far the work goes

Do I need a permit for downspout drain line installation?

Depends on scope

A like-for-like downspout drain line job is often exempt, but changing capacity, routing, structure or wiring usually triggers a permit. Always confirm with the building department that has jurisdiction over your address.

Cost breakdown

Modeled national figures for a standard single-family job.

Low endSimple scope, easy access, no surprises	$500
TypicalWhat most homeowners pay	$1,400
High endLarge scope, upgrades or difficult conditions	$3,600
Job type	Project
Cost varies by location	Moderate

Related jobs

Related projects homeowners often plan together.

Often combined withSprinkler System Replacement$2,500 – $12,000 Often combined withSprinkler System Installation$2,500 – $12,000 Often combined withSprinkler System Repair$550 – $2,640 Often combined withYard Drainage Installation$1,500 – $12,000 Often combined withSprinkler System Maintenance$300 – $1,440 Often combined withSprinkler Head ReplacementCost under revalidation

Also searched as

You may also hear this called:

install downspout drain line · new downspout drain line · downspout drain line install cost · put in downspout drain line

Frequently asked questions

How much does downspout drain line installation cost?

Most homeowners pay between $500 and $3,600, with $1,400 typical for a standard single-family job. Figures are modeled national estimates, not quotes.

Do I need a permit for downspout drain line work?

Sometimes. Permitting depends on scope and on your jurisdiction; like-for-like work is often exempt while anything structural, electrical or gas-related usually is not.

Who does downspout drain line installation?

A drainage contractor handles this job. DIY difficulty is rated 3/5 (5 = very DIY friendly).

Does the price change much by location?

Yes. Across the states we price, the typical cost ranges from $1,260 to $1,835 — about a 46% spread — driven by labor rates, code requirements and permit fees.