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Standby Generator Install

Whole-home standby generator with automatic transfer switch and gas hookup

Install of a whole-home standby generator (Generac, Kohler, or Briggs & Stratton) with automatic transfer switch (ATS), gas line, and commissioning. Priced for 14–26 kW units in the $8,500–$19,500 range.

Sections

10

Variables

14

Word count

~1500

Validity

30 days

Variables you'll fill in

{{client_name}}

Client namereq

e.g. Jane Homeowner

{{client_address}}

Project addressreq

e.g. 1234 Main St, Phoenix AZ 85001

{{contractor_name}}

Your company namereq

e.g. Acme Construction LLC

{{contractor_license}}

License numberreq

e.g. ROC 123456

{{scope_summary}}

One-paragraph scope summaryreq

e.g. Describe what this project covers in 2-3 sentences.

{{total}}

Total contract pricereq

e.g. 24500

{{deposit}}

Deposit / down paymentreq

e.g. 5000

{{start_date}}

Estimated start datereq

e.g. 2026-05-01

{{completion_date}}

Estimated substantial completionreq

e.g. 2026-06-15

{{proposal_date}}

Date of proposalreq

e.g. 2026-04-18

{{generator_kw}}

Generator kW sizereq

e.g. 22 kW

{{generator_model}}

Generator make & modelreq

e.g. Generac Guardian 22kW Home Standby (7043)

{{fuel_type}}

Fuel typereq

e.g. Natural gas / LP

{{generator_location}}

Generator placementreq

e.g. Side yard, 10 ft from utility meter, 5 ft from property line

Section-by-section preview

01Scope of Work

reqai rewritable

This proposal covers installation of a {{generator_kw}} {{generator_model}} standby generator at {{client_address}}.


Site prep

Pour concrete pad (or place composite pad) at {{generator_location}}

Verify setback requirements per local code and manufacturer (typically 18"–60" from combustibles; local AHJ may be stricter)

Coordinate {{fuel_type}} gas line routing (if new line required, coordinated with licensed gas fitter; itemized below)


Generator install

Set generator on pad, level, and anchor per manufacturer spec

Connect {{fuel_type}} gas line with approved flex connector and shutoff

Install automatic transfer switch (ATS) adjacent to main electrical panel; whole-home or critical-load panel configuration per {{client_name}}'s choice

Wire ATS to main panel with appropriately sized service-entrance conductors

Install battery, fluid fills (oil), and initial fuel supply


Commissioning

Perform startup per manufacturer protocol

Conduct a simulated utility failure; verify transfer to generator within target seconds (typically 10–20 seconds)

Test return-to-utility and cool-down cycle

Set weekly auto-exercise schedule (typically Saturday 2 PM)

Register {{client_name}} with Mobile Link (or equivalent) for remote monitoring (Wi-Fi included on most new units)


Owner orientation

30-minute orientation on operation, maintenance (oil change every 200 hours or annually), and emergency operation

Deliver owner's manual, warranty registration, and maintenance schedule

02Schedule

reqai rewritable

Estimated duration: 2–4 working days.


**Day 1:** Pad install, unit placement, gas line work

**Day 2:** Electrical connection, ATS install

**Day 3:** Startup and commissioning; AHJ inspection

**Day 4 (if needed):** Punch, owner orientation


Start date: {{start_date}}.

03Investment

req

Total contract price: {{total}}


**Deposit: {{deposit}}** — signing

**Balance: remainder** — at commissioning and owner orientation

04Payment Terms

req

Balance due same-day at commissioning and owner orientation.


Invoices are due upon receipt. Payments more than ten (10) calendar days past due accrue a service charge of one and one-half percent (1.5%) per month on the unpaid balance, or the maximum rate permitted by law, whichever is less. {{contractor_name}} reserves the right to stop work and preserve lien rights if any progress payment is not received within five (5) business days of the due date. All retained mechanic's lien, stop notice, and bond rights under applicable state law are preserved.

05Exclusions

reqai rewritable

The following items are specifically NOT included in the contract price and are the responsibility of {{client_name}} unless added by written Change Order:


Permits, plan-review fees, and jurisdictional inspection fees unless explicitly itemized above

Repair or remediation of pre-existing code violations discovered during the work

Asbestos, lead paint, mold, or other hazardous material abatement

Structural engineering, architectural drawings, or third-party design services

Finish selections, fixtures, or appliances not listed in the itemized scope

Work on concealed systems (electrical, plumbing, HVAC, framing) beyond the points of connection identified

Landscaping restoration beyond returning disturbed areas to rough grade

Post-completion cleaning beyond construction broom-clean

LP tank purchase or lease (if LP-fueled; coordinate with propane supplier)

Gas meter upsize (if existing meter lacks capacity for generator; typically $450–$900 through utility)

Sound-attenuation enclosure or custom shroud beyond factory

Snow removal from generator pad in winter months (annual maintenance plan)

Extended service contract (available separately; 3 and 5-year plans)

Removal or relocation of existing portable generator and inlet boxes

06Assumptions

reqai rewritable

This proposal is based on the following assumptions. If any assumption is incorrect, the contract price and schedule are subject to adjustment by Change Order:


Site access is available during normal working hours (7am–5pm, Monday–Saturday)

Adequate parking is available within 100 feet of the work area

Electrical power and potable water are available on-site at no cost to contractor

Existing structural elements, waste lines, water supply, and electrical service are in serviceable condition unless noted

{{client_name}} will remove personal property, artwork, and valuables from the work area prior to start

Work is based on a single mobilization; re-mobilization required due to delays outside contractor's control will be billed at current rates

{{client_name}} verifies HOA approval for generator placement

Existing natural gas supply has capacity for the generator's BTU demand (8–17 MBH per kW typical)

Existing electrical panel is compatible with ATS; panel upgrade priced separately if needed

Site allows for vehicle access to place generator (generator weighs 500–900 lbs depending on size)

07Change Order Process

req

Any modification to the scope, specifications, materials, or schedule set forth in this agreement must be authorized in writing as a Change Order signed by both parties before the work is performed. Each Change Order will describe the modified scope, any adjustment to the contract price, and any impact on the schedule. Verbal instructions do not modify this agreement. Additional time and cost associated with unforeseen conditions — including but not limited to concealed rot, asbestos, mold, faulty prior installation, unmarked utilities, or code-required upgrades triggered by the work — will be documented as a Change Order and billed at the rates stated in this proposal or at {{contractor_name}}'s then-current published labor rates, whichever is in effect at the time the condition is discovered.

08Warranty

reqai rewritable

{{contractor_name}} warrants the workmanship of the installed work for a period of one (1) year from the date of substantial completion. Manufacturer warranties on materials and equipment pass through to {{client_name}} as provided by the manufacturer and are the exclusive source of any material warranty. This warranty does not cover normal wear, abuse, neglect, acts of God, subsequent work performed by others, damage from settlement or movement of the building, or modifications to the installed work performed without written consent. To make a warranty claim, {{client_name}} must notify {{contractor_name}} in writing within thirty (30) days of discovering the alleged defect and allow reasonable access to inspect and repair.

09Validity & Acceptance

req

This proposal is valid for 30 days from the proposal date ({{proposal_date}}). Pricing is subject to change after that date due to material market fluctuations and scheduling availability. Acceptance requires signature below and receipt of the deposit amount stated in Payment Terms. Upon acceptance, this proposal, together with any attached specifications and subsequent written Change Orders, constitutes the complete agreement between the parties and supersedes any prior oral or written discussions.

10Signatures

req

**{{contractor_name}}** — License {{contractor_license}}


By: ________________________ Date: ______________


Print Name: ________________________



**{{client_name}}** — Owner / Authorized Representative


By: ________________________ Date: ______________


Print Name: ________________________


Property Address: {{client_address}}

Default payment terms

50% deposit due at signing, 40% on rough-in / mid-project milestone, 10% on substantial completion

Legal notes

  • · Manufacturer limited warranty: 5 years or 2,000 hours (most Generac/Kohler units). Registered at commissioning.
  • · {{contractor_name}} is a factory-certified installer; required for manufacturer warranty validity.
  • · Annual maintenance is required per manufacturer terms; available from {{contractor_name}} or any certified tech.

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