How does Cornerstone compare to other Portland roofers?
Six Portland and Vancouver contractors next to us, on the axes you can verify: founding year, license numbers, Google rating, workmanship warranty, services, and whether they offer a self-serve online visualizer.
We put this page up because homeowners cross-shop us against these companies anyway. Every cell was read from the company's own website or the named public source on October 12, 2026. Where we could not verify a cell from a public source, it says not published. Where a number comes from an aggregator rather than Google, we name the aggregator.
We do not use competitor logos. Cornerstone Renovations is not affiliated with or endorsed by any company listed on this page; company names are used for factual identification only.
| Contractor | Founded | License(s) | Google rating | Workmanship warranty | Services | Self-serve AI visualizer |
|---|---|---|---|---|---|---|
| Cornerstone Renovations (us)Sources: google.com, search.ccb.state.or.us, read October 12, 2026 | Not published on this site | Oregon CCB #261422 (active) | 5.0, 80 reviews (read from Google October 12, 2026) | Manufacturer warranties plus our own written workmanship guarantee | Roofing, siding, windows, gutters, decking | Yes: RoofVision for roofing and SidingVision for siding, free on this site |
| Interstate RoofingSources: interstateroofing.com, interstateroofing.com, search.ccb.state.or.us, read October 12, 2026 | 1988 | Oregon CCB #244218; Washington INTERRL776BC | 4.8, 793 reviews (stated on their site) | Lifetime workmanship warranty | Roofing, gutters | No self-serve online visualizer found on their public website as of Oct 2026. They offer an online roof cost estimator. |
| KVN ConstructionSources: kvnconstruction.com, kvnconstruction.com, kvnconstruction.com, search.ccb.state.or.us, read October 12, 2026 | 2001 | Oregon CCB #146991; Washington KVNCOI-980M5 | 5.0, 41 reviews (on-site reviews widget) | Backs its own labor; limited lifetime manufacturer warranties | Siding, roofing, gutters, painting, windows, doors | No self-serve online visualizer found on their public website as of Oct 2026. 3D design is offered inside a sales consultation. |
| Legit ExteriorsSources: legitexteriors.com, search.ccb.state.or.us, read October 12, 2026 | 2011 | Oregon CCB #208766; Washington LEGITE*825N2 | 4.6, 251 reviews (Google reviews widget on their site) | Lifetime warranties | Roofing, siding, windows, pressure washing | No self-serve online visualizer found on their public website as of Oct 2026. |
| Clear Vision ConstructionSources: cvcpdx.com, cvcpdx.com, search.ccb.state.or.us, read October 12, 2026 | 2011 | Oregon CCB #195187 (state registry) | 4.8, 259 reviews (stated on their site) | Labor guarantee on top of manufacturer warranties | Roofing, siding, gutters, painting, storm damage | No self-serve online visualizer found on their public website as of Oct 2026. They offer an online roof cost calculator. |
| Boss ExteriorsSources: reviews.birdeye.com, search.ccb.state.or.us, read October 12, 2026 | Not published | Oregon CCB #226249. State registry status read October 12, 2026: Suspended, Not Active. | Not published (Birdeye aggregate: 4.7, 253 reviews) | Not published | Roofing, siding | Not published. Their website was unreachable on October 12, 2026. |
| Left Coast ExteriorsSources: leftcoastexteriors.net, leftcoastexteriors.net, search.ccb.state.or.us, read October 12, 2026 | 2017 | Oregon CCB #217914 (state registry). Site states licensed in Washington and Oregon; no Washington number published. | 4.9, 200+ reviews (stated on their site) | Extended manufacturer warranties through installer certifications | Roofing, siding, windows, decks, doors, gutters, patio covers | No self-serve online visualizer found on their public website as of Oct 2026. Their site has an interactive Explore the Home diagram. |
- Founded
- Not published on this site
- License(s)
- Oregon CCB #261422 (active)
- Google rating
- 5.0, 80 reviews (read from Google October 12, 2026)
- Workmanship warranty
- Manufacturer warranties plus our own written workmanship guarantee
- Services
- Roofing, siding, windows, gutters, decking
- Self-serve AI visualizer
- Yes: RoofVision for roofing and SidingVision for siding, free on this site
- Founded
- 1988
- License(s)
- Oregon CCB #244218; Washington INTERRL776BC
- Google rating
- 4.8, 793 reviews (stated on their site)
- Workmanship warranty
- Lifetime workmanship warranty
- Services
- Roofing, gutters
- Self-serve AI visualizer
- No self-serve online visualizer found on their public website as of Oct 2026. They offer an online roof cost estimator.
- Founded
- 2001
- License(s)
- Oregon CCB #146991; Washington KVNCOI-980M5
- Google rating
- 5.0, 41 reviews (on-site reviews widget)
- Workmanship warranty
- Backs its own labor; limited lifetime manufacturer warranties
- Services
- Siding, roofing, gutters, painting, windows, doors
- Self-serve AI visualizer
- No self-serve online visualizer found on their public website as of Oct 2026. 3D design is offered inside a sales consultation.
- Founded
- 2011
- License(s)
- Oregon CCB #208766; Washington LEGITE*825N2
- Google rating
- 4.6, 251 reviews (Google reviews widget on their site)
- Workmanship warranty
- Lifetime warranties
- Services
- Roofing, siding, windows, pressure washing
- Self-serve AI visualizer
- No self-serve online visualizer found on their public website as of Oct 2026.
- Founded
- 2011
- License(s)
- Oregon CCB #195187 (state registry)
- Google rating
- 4.8, 259 reviews (stated on their site)
- Workmanship warranty
- Labor guarantee on top of manufacturer warranties
- Services
- Roofing, siding, gutters, painting, storm damage
- Self-serve AI visualizer
- No self-serve online visualizer found on their public website as of Oct 2026. They offer an online roof cost calculator.
- Founded
- Not published
- License(s)
- Oregon CCB #226249. State registry status read October 12, 2026: Suspended, Not Active.
- Google rating
- Not published (Birdeye aggregate: 4.7, 253 reviews)
- Workmanship warranty
- Not published
- Services
- Roofing, siding
- Self-serve AI visualizer
- Not published. Their website was unreachable on October 12, 2026.
- Founded
- 2017
- License(s)
- Oregon CCB #217914 (state registry). Site states licensed in Washington and Oregon; no Washington number published.
- Google rating
- 4.9, 200+ reviews (stated on their site)
- Workmanship warranty
- Extended manufacturer warranties through installer certifications
- Services
- Roofing, siding, windows, decks, doors, gutters, patio covers
- Self-serve AI visualizer
- No self-serve online visualizer found on their public website as of Oct 2026. Their site has an interactive Explore the Home diagram.
Sources
Every link below was opened and read on October 12, 2026. Aggregators are labeled as themselves, never as Google.
- Cornerstone Renovations Google Business Profile
- Interstate Roofing, Portland page
- Interstate Roofing, Oregon page (licenses, warranty)
- KVN Construction homepage
- KVN Construction reviews page
- KVN Construction about page
- Legit Exteriors homepage
- Clear Vision Construction homepage
- Clear Vision Construction roof cost calculator page
- Boss Exteriors Birdeye profile (aggregator, not Google)
- Left Coast Exteriors homepage
- Left Coast Exteriors reviews page
- Oregon CCB contractor license lookup
Common questions
Is Cornerstone Renovations licensed in Oregon?
Yes. Cornerstone Renovations LLC holds Oregon CCB license #261422, active in the state registry. You can verify any Oregon contractor's license at the Construction Contractors Board lookup linked in the sources below.
Which Portland roofers let you preview your roof online?
As of October 2026, Cornerstone is the only contractor on this list with a self-serve visualizer on its public website: RoofVision renders real GAF shingle finishes on a photo of your home, and SidingVision does the same for siding. Interstate Roofing and Clear Vision Construction offer online cost calculators, which estimate a price but do not preview finishes on your home.
What does "not published" mean in the table?
It means we could not verify that cell from a public source on October 12, 2026. We do not guess. If a company publishes the information later, we will update the cell with a new read date.
Where do the Google ratings come from?
Each rating cell names its source. Most companies state their Google rating on their own website; we quote that figure and date it. Where a number comes from an aggregator such as Birdeye instead of Google, the cell says so. Cornerstone's 5.0 rating from 80 reviews was read from its Google Business Profile on October 12, 2026.
Does Cornerstone serve both Oregon and Washington?
Yes. We serve the Portland metro and southwest Washington from our Hillsboro, Oregon headquarters, and we are licensed, bonded, and insured for work in both states (Oregon CCB #261422).
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