- License number
- 476891
- Licensed for
- General Building, Glazing, Awnings, Siding & Decking
- First issued
- 1985
- Valid through
- Jul 2027
- Bond
- Bonded $25,000
- Source checked
- Jul 28, 2026
Public evidence profile · Checked May 2026
Martinelli's Home Improvement & Supply Company
Credentials & registries
California Contractors State License Board
No Trust Score yet
- Rated 4.6 from 22 reviews
- 1 credential shown
Based on rating, review volume, independent sources and credential evidence. Evidence context, not a guarantee of workmanship.
Reviews · public evidence
What customers say
These review totals are published independently on the named public source below, not testimonials this business chose to show. We show the aggregate rating, review volume, and source attribution we hold so you can weigh the evidence yourself.
4.6out of 5
Where these reviews are published
- Porch22 reviews · 4.6 avg
Credentials and associations
1Credentials and memberships
These credentials and memberships are attributed to named public sources. Check the source before relying on them.
Sources
2 named public sourcesWhere this information comes from
Everything on this page is drawn from named public sources. Where a source provides a public link, you can open the original and dig deeper.
Review sources
Registers and membership directories
Public evidence last checked May 2026
About
Martinelli's Home Improvement & Supply Company has been in business since 1985 and has built a reputation for offering customers service that is second to none and quality products that perform for years to come. Martinelli's is licensed and bonded company.
Your own checks
What to check before you hire
Worth checking yourself
Always confirm credentials and quotes with the business directly before hiring.
Be wary of high-pressure 'today-only' discounts and a salesperson who won't leave. A reputable window or door firm gives you a written, itemized quote you can take away and compare against others.
Never pay the full price up front; a modest deposit with the balance on completion is normal. Ask what deposit protection or insurance-backed guarantee you get if the firm stops trading before fitting.
Get the specification in writing (frame material, the glazing units and their energy rating, and any trickle vents) so you can check you got what you paid for.
Want an extra legitimacy check? Run the Rogue Contractor Check on Martinelli's Home Improvement & Supply Company before you contact them.
Run Rogue Contractor Check →Good to know
Common questions about Martinelli's Home Improvement & Supply Company
Is Martinelli's Home Improvement & Supply Company a legitimate business?
Martinelli's Home Improvement & Supply Company has 22 independent public reviews, rated 4.6 out of 5. This is independent public evidence gathered from named public sources (no ads, no paid placement), not a guarantee of workmanship. If anything here is out of date, the business can request a correction.
What do customers say about Martinelli's Home Improvement & Supply Company?
Martinelli's Home Improvement & Supply Company has 22 public reviews, averaging 4.6 out of 5. The reviews section shows the aggregate rating, review volume, and review source information we hold.
How do I know Martinelli's Home Improvement & Supply Company's reviews are genuine?
Martinelli's Home Improvement & Supply Company's 22 public reviews come from a named public review source. MyTrustedTraders brings this public evidence together with no ads and no paid placement: we show the review source information and aggregate rating we hold rather than selling rankings, so you can weigh the evidence for yourself.
Is Martinelli's Home Improvement & Supply Company qualified and accredited?
We hold 1 independently sourced credential for Martinelli's Home Improvement & Supply Company, including California Contractors State License Board. Each is attributed to the body that issued it in the credentials section. For example, California Contractors State License Board is California's Contractors State License Board: the state body you must be licensed with to do contracting work in California.
