Grand Valley Solar LLC

Solar installer working in Boulder.

Boulder publishes no contractor license list we can check

11 solar system jobs on Boulder permits, 2025 to 2026. 26th most solar system permits of 68 contractors in Boulder.

Do they work near you?

What the public records show

From the city's permits, one question at a time.

Question	Records show	Mark
Licensed?	Boulder publishes no contractor license list we can checkThat says nothing about this business either way.	Ask them
Jobs on record	11 solar system jobs on Boulder permits, 2025 to 2026Every permit we have for them is solar system.26th most solar system permits of 68 contractors in Boulder. That counts jobs, not quality.Our Boulder permit records cover September 2021 to September 2026.Of their 11 solar system permits, 7 mention a battery.

Records: City of Boulder permits.

Cost and timing

All solar system jobs in Boulder: $12,000 to $34,000

Half of 2,268 city permits list an amount in this range. Permit amounts are often lower than what you pay.

Solar with a battery in Boulder: $24,000 to $47,000 (444 permits)

How to read this range

Contractors write a job value on the permit form, and the city uses it to set the permit fee. It is not the contract price, and it is often lower than what you pay. A quarter of the permits list less than this range, and a quarter list more. Use it to see if a quote is in the normal range.

Permit value (not a price)

Most of their recent permits list $10,466

6 of their 11 solar system permits with a value in the last 12 months list exactly that, which looks like a set figure rather than a price. What solar system jobs cost in Boulder.

Get 2 or 3 written quotes.

Track record

11 jobs in the last 12 months, up from 0 the year before

Each bar is 3 months of permits. The tallest is 8 jobs, July to September 2026. Across Boulder, all contractors together had 36% more solar system jobs in the last 12 months than in the 12 months before.

Where they work most

803049 jobs
803032 jobs

Latest jobs

A row marked ×2 or more stands for that many similar jobs on one day in one ZIP code.

Date	Work	ZIP
Sep 21, 2026	Solar, 37 squares (3,700 sq ft)RE-ROOF Total tear-off & reroof of SFD, 37 squares of dimensional shingles on a pitch…	80304
Sep 9, 2026	Solar (×6, same day), 5.22 kW	80304
Sep 3, 2026	Solar, 12.150 kWInstallation of a 12.150 kW roof-mounted PV system	80303
Apr 8, 2026	Solar, 15.91 kWInstallation of a 15.91 kW DC roof-mounted solar system and 1 Backup - Tesla BUS (2) PW3 + (2) DCX…	80304
Nov 6, 2025	Solar, 7.74 kWInstallation of a 7.74 kW DC roof-mounted solar system and oneTesla powerwall 3 (13.5 kWh)	80304
Oct 13, 2025	Solar, 5.95 kWInstallation of a 5.95 kW DC roof-mounted solar system in addition to the already existing 5.67 kW…	80303

What to ask before you hire

About Grand Valley Solar LLC

Ask for their license number and check it with the state.
Ask what the warranty covers and for how long, in writing.
Search their name on the Better Business Bureau site, and read their reviews.

Worth asking any solar installer

Can you show me proof of liability insurance and your bond?
What size system, which panels and inverter, and what will it make in a year?
Is my roof good for 25 more years, and what if it needs work first?
Who handles the permit and the utility's approval to turn it on?

More solar installers near 80304 and 80303

See all 68 solar installers in Boulder, ranked by jobs

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