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Contour Grading LLC.

WA + ID, registered in both statesEst. 2020
(509) 280-7898

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Credentials & honors
  • Registered in both statesWA L&I + Idaho DOPLRegistered in both states. Holds a current Washington L&I registration and a current Idaho contractor registration, so it can legally take jobs on both sides of the state line.

Contour Grading LLC is a Spokane excavation and grading contractor with one state specialty, Excavation, Grading and Land Clearing, and one workers'-comp class to match: grading. The work is site grading and dirt moving, done by a small owner-run outfit that serves Spokane and the Coeur d'Alene area. Its licence-matched permit record includes a regular grading permit in Spokane Valley.

Contour Grading was established in 2020, and the state lists Douglas Dinger as a principal since that year. The state puts the crew at one to three people, so the owner is working on the machine rather than running crews from an office. Building types tied to the business lean commercial and industrial, and the grading permit closed out in Spokane Valley shows the kind of work it files for. The company advertises service in both Spokane and Coeur d'Alene, within roughly a 25-mile reach of its Spokane base. The fit is site prep: lot grading, driveway grading, leveling and shaping ground ahead of other trades, on either side of the state line. Contour Grading is a grading specialist, so a job that also needs electrical, plumbing or a full building put up will need other contractors alongside it. A property owner who wants a small operation, with the person quoting the job also running the equipment, will find that here. Grading bids are hard to compare unless everyone is pricing the same job. Before collecting quotes, write down the area to be graded, the finished grades or slope you want, where water should drain, and whether fill is coming in or spoil is hauled off. Note any clearing, stumps or rock you know about, who handles utility locates, and who pulls the grading permit if Spokane Valley, the City of Spokane or Kootenai County requires one. Spring runoff and freeze-thaw on Spokane-area soils make drainage the detail most worth pinning down on paper.

WA L&I registration verified October 1, 2026 · see the state record

WA L&I registration
Registration number
CONTOGL807CL
Registration checked
October 1, 2026
Registered since
2020
Expires
February 2028
Also registered in Idaho
RCE-55017
Contractor bond
$15,000 · Nationwide Mutual Ins Co
Liability insurance
$2,000,000 · Ohio Security Ins Co
Insurance through
February 2027
Check it on the state record
On Google
5.0/ 5

Contour Grading LLC's Google rating, from 30 reviews. Worth ten minutes before you call — read the most recent ones first.

Read the reviews on Google
The record

The details on Contour Grading LLC

WA L&I registration
CONTOGL807CL
Idaho registration
RCE-55017
Registration checked
October 1, 2026
Registered since
2020
Expires
February 2028
Contractor bond
$15,000 · Nationwide Mutual Ins Co
Liability insurance
$2,000,000 · Ohio Security Ins Co
Insurance through
February 2027
Established
2020
Primary trade
General Contractor
L&I specialty
Excavation, Grading and Land Clearing
Registered principal
Douglas Dinger · since 2020
Based in
Spokane

Own this business? Claim the listing to correct anything here.

Before you call

Questions worth asking Contour Grading LLC

Is Contour Grading LLC licensed in Washington?

The number you want is CONTOGL807CL — Contour Grading LLC's Washington State L&I contractor registration, expiring February 2028. They are also registered in Idaho (RCE-55017), so Coeur d'Alene-side work is covered too. Last checked October 1, 2026. Washington's contractor lookup is free and open if you want to confirm it today. The same record shows a $15,000 contractor bond (Nationwide Mutual Ins Co) and $2,000,000 of liability insurance with Ohio Security Ins Co through February 2027. Get current certificates for the bond and the insurance before anyone starts.

How is Contour Grading LLC rated?

5.0 out of 5 on Google, across 30 reviews. This page links straight to them — read the most recent first, since they tell you how the business runs now rather than how it ran three years ago.

Who calls from 509-280-7898?

Contour Grading LLC, a general contractor based in Spokane. (509) 280-7898 is the number on their listing, and their website is contourgrading.com. Calling back about a quote? Get it in writing before anyone starts.

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