GreenCal Construction Reviews (2026): 34 Recent Google Reviews Analyzed
Considering GreenCal Construction, or is your solar installer planning to subcontract the roof to them? We read their 34 most recent Google reviews. GreenCal appears to operate primarily as a roofing and construction contractor, and most reviews are positive — the roofing work itself and the speed are what customers praise. Where the critical reviews concentrate is project management: scheduling, permits, and — in one account — accountability when working as a subcontractor.
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Who GreenCal Construction suits: homeowners needing roofing or construction who will pin down scheduling, permits and cleanup in writing — and anyone whose solar installer plans to subcontract the roof, who should confirm who is accountable if something goes wrong.
Rating distribution
Mostly five-star, but with the highest share of one-star reviews of any company in our analysis.
| Rating | Reviews | Share | |
|---|---|---|---|
| 5★ | 25 | 73.5% | |
| 4★ | 2 | 5.9% | |
| 3★ | 0 | 0.0% | |
| 2★ | 1 | 2.9% | |
| 1★ | 6 | 17.6% |
What customers praise
Themes across GreenCal Construction's positive (4–5★) reviews. Keyword-identified and overlapping, so shares don't sum to 100%.
| Positive theme | Reviews mentioning |
|---|---|
| Roofing quality | 10 |
| Fast / on-time work | 10 |
| Professional, clean workmanship | 9 |
| Communication mentioned positively | 6 |
| Price / value | 1 |
“Efficient. Fast. All my neighbors were in awe of how great of a job they did. Great with communication as well.” — a 5-star Google reviewer
What GreenCal's negative reviews mention: project management and coordination
Most reviews are five-star. The themes below come only from the 6 one- and two-star reviews with written detail (one had no text) — hand-coded (categories overlap), not independently verified, and may not represent the experience of most GreenCal customers.
Most common complaints
- 3 of 6 — disorganization or scheduling problems (including an unannounced early-morning visit)
- 2 of 6 — permit problems at the start or end of the job
- 2 of 6 — poor communication or customer service after the work
- 1 of 6 — a single account describing a roofing problem on a subcontracted solar job (unverified)
- 1 of 6 — debris, nails, or old materials left behind
Worth noting
- The roofing work itself is often praised — the complaints are about coordination, not craftsmanship
- Only one review explicitly describes the solar-subcontractor dynamic, so treat that as a single account
“People showing up unannounced at 7:15 in the morning for inspection… the scheduling has been a nightmare.” — a 1-star Google reviewer
Quarterly trend
Unlike a one-off dip, GreenCal's negative reviews appear steadily across the year.
| Quarter | Reviews | Avg rating | 1–2★ |
|---|---|---|---|
| Q3 2025 | 8 | 4.00 | 2 |
| Q4 2025 | 8 | 4.50 | 1 |
| Q1 2026 | 6 | 3.50 | 2 |
| Q2 2026 | 11 | 4.27 | 2 |
| Q3 2026 (to date) | 1 | 5.00 | 0 |
Customer-journey map
Where praise and complaints tend to fall by project stage — synthesized from the review themes above.
| Stage | Common praise | Common complaint |
|---|---|---|
| Sales / estimate | Helpful, took time to assess | — |
| Permits | — | Delays or issues at start & end |
| Scheduling | — | Disorganization; unannounced visits |
| Roofing work | Quality, fast, professional | — |
| Cleanup | Often tidy | Debris / nails left (some jobs) |
| As a solar subcontractor | — | A coordination issue (single account) |
What to clarify before signing with GreenCal Construction
The common concerns above, turned into questions — especially if roofing is part of a solar project.
- A written schedule with permit milestones at the start and end of the job
- Advance notice for any site or inspection visit
- Cleanup and debris/nail removal spelled out in the contract
- If it's a solar project: exactly who is accountable for a roof leak — the solar company or the roofer — in writing
- The roof warranty terms and how a future claim is handled
GreenCal is primarily a roofing/construction contractor and appears in our analysis because roofing often accompanies a solar project — including, per one review, as a subcontractor. It had the highest one- or two-star rate in the group (21%). Cali Energy self-performs its roofing alongside solar in-house, so on a solar project there is no separate roofing company to coordinate with. This dataset does not establish that subcontracting causes the difference.
- A single 12-month snapshot of GreenCal's Google profile — not its all-time record, and other platforms (Yelp, BBB, GuildQuality) may differ.
- GreenCal is primarily a roofing/construction contractor; only one review explicitly describes the solar-subcontractor dynamic, so that point rests on a single account.
- Complaint counts are hand-coded; positive themes are keyword-identified and approximate. Both reflect what reviewers reported or alleged and were not independently verified.
- We report aggregated figures and short excerpts and link the source; we do not republish full reviews or reviewer names.
- Cali Energy compiled this analysis and competes with GreenCal Construction.
- Spotted an error? Tell us and we'll review it.
See GreenCal Construction's Google reviews → · Full LA solar ranking · Methodology. Verified August 26, 2026.
The other companies we analysed
Same source, same window, same metric — one page each.
Frequently asked
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Is GreenCal a solar company or a roofing company?
What are the most common GreenCal complaints?
What if my solar installer subcontracts the roof to GreenCal?
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Get a free estimatePrepared by Cali Energy, August 26, 2026. This article is for general educational purposes only and is not legal, tax, financial, engineering, or utility advice. Rates, incentives, codes, permit requirements, equipment specifications, prices, and program terms may change; figures and timelines are estimates, not guarantees. Confirm current requirements with the applicable utility, AHJ, program administrator, manufacturer, or a licensed professional. See our Content Disclaimer. Cali Energy · 19201 Parthenia St, Ste E, Northridge, CA 91324 · CSLB #1032379 (B, C-10, C-39)