How much does standby generator installation cost in Marietta, GA?

Most Marietta homeowners spend between $9,000 – $18,000 on standby generator installation, with an average around $13,500. Local labor prices right at the national average, so Marietta quotes tend to land at the higher end of national ranges.

Why is standby generator installation more or less expensive in Marietta than elsewhere?

Licensed trade labor in Marietta runs about 100% of the national average, and the best crews book out fastest in spring and early summer. Georgia weather drives material choices here, so ask contractors what they install most often in Marietta and why.

Do I need a permit for standby generator installation in Marietta, Georgia?

Most Marietta, GA projects that change structure, electrical, plumbing or mechanical systems need a permit from the local building department; cosmetic work usually does not. Always confirm current requirements with the local building department before signing a contract, and make sure the permit is pulled by your licensed contractor.

How many quotes should I get in Marietta?

Get at least three written quotes from licensed, insured Georgia contractors. Comparing line items — not just the bottom line — is the fastest way to spot an inflated bid in the Marietta metro market.

How much does standby generator installation cost in 2026?

Most homeowners pay between $9,000 and $18,000, with a national average near $13,500. Small, simple jobs land at the low end; large or premium-material jobs run well above the high end.

What is the cost per kilowatt?

Installed pricing usually runs $600.00 to $1,100.00 per kilowatt, including labor and materials. Expensive metros can run 15–45% higher than that range.

What drives the price up the most?

Scope and access. Larger quantities lower your per-kilowatt price, but difficult access, demolition of existing work, structural repairs found mid-job, premium materials and rush scheduling each add 8–30%.

Permits are typically required when the work changes structure or ties into electrical, plumbing, gas or mechanical systems. Budget $75–$600 in most cities and confirm whether your contractor pulls it — unpermitted work can block a future home sale.

How long does the job take?

Most residential projects of this type finish in one to five working days once materials are on site. Custom orders, inspections and weather are the usual causes of delay.

How many quotes should I get?

Three. Bids on the same scope commonly vary 20–40%, and the middle bid with the strongest warranty and references is usually the best value — the cheapest bid often excludes prep, disposal or permits.

Home/Cost guides/Standby Generator Installation/Marietta, GA

Marietta metro · Georgia

Standby Generator Installation cost in Marietta, GA

Marietta homeowners typically pay $9,000 – $18,000 for standby generator installation. Local labor and materials price right at the national average.

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Marietta average

$13,500

Typical low

$9,000

Typical high

$18,000

Per kilowatt

$600 – $1,100

Sample ZIP

What drives Marietta pricing

Local labor

Licensed trade labor in Marietta runs about 100% of the national average, and the best crews book out fastest in spring and early summer.

Permits & code

Most Marietta, GA projects that change structure, electrical, plumbing or mechanical systems need a permit from the local building department; cosmetic work usually does not.

Climate & conditions

Georgia weather drives material choices here, so ask contractors what they install most often in Marietta and why.

Instant cost calculator

Adjust the inputs to see live pricing

Generator size (kW)22 kilowatts

Quality / material level

Site access

Removal / prep work

Timing

Estimated project cost

$10,973 – $15,153

Most homeowners pay around $13,063

Compare quality / material level

Cost by material in Marietta

Installed Marietta pricing per kilowatt.

Option	Installed cost	Pros	Cons
Portable with interlock	$525 – $725	—	—
14 kW essential circuits	$725 – $950	—	—
22 kW whole-home	$950 – $1,250	—	—
Liquid-cooled 30 kW+ whole-home	$1,250 – $1,700	—	—

Where the money goes in Marietta

A typical $13,500 Marietta project, broken down by line item.

Labor0.45% · $61
Materials0.38% · $51
Permits & inspections0.05% · $7
Overhead & profit0.12% · $16

Common add-ons

Extras that show up on Marietta quotes but rarely in the headline price.

Automatic transfer switch

$500 – $2,000

Gas line run

$500 – $2,500

Concrete pad

$300 – $900

Extended warranty

$300 – $1,200

Ways to save in Marietta

Size for essential circuits only — it can cut the total by a third.
Install in fall when generator demand and lead times drop.
Collect three written bids on an identical scope — spreads of 20–40% are normal.
Book in the off-season and stay flexible on the start date to save 5–15%.
Bundle nearby work into one mobilization so you only pay setup and travel once.
Ask what the contractor would change to cut 10% without hurting durability.

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More Marietta research

Best standby generator installation companies in Marietta Standby Generator Installation permits in Georgia Standby Generator Installation near me All Georgia prices

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Other project costs in Marietta

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$1,500 – $4,000

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$18,000 – $95,000

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$5,500 – $18,000

Deck Building in Marietta

$4,400 – $12,000

Window Replacement in Marietta

$450 – $1,500

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