Contractor Profile

Interior Alterations

Interior Alterations concentrates in commercial alteration in Denver (95% of its 417 segment-eligible permits), with secondary activity across 1 other segment. Its permit record in Denver spans 2011–2026. Reliable permit valuations total ≈$48.1M (across the 96% of filings with a valuation we can stand behind). Filing activity is steady over the last 90 days versus the prior 90.

First permit: Jul 21, 2011 (5,519d ago)Latest permit: Jul 31, 2026 (30d ago)
The sales record
Market
Denver
Active
2011–2026 · 15 yrs
Licenses on file
0
Reliable value
$48.1M
Coverage
96%
Reliable filings
397
Rank in Denver
#36
Permits (all-time, all segments)
416
Filings 90d
3
Filings 30d
3
Latest permit
Jul 31, 2026
Typical project size$63Ktypically $25K–$119K across 397 valued permits
Where they work

Primarily Commercial Alteration — 95% of 417 segment-classified permits

Ranked #9 in the Denver Commercial Alteration leaderboard →
Firmographics
License & registration IDs on fileNo license records in the source data.
Direct contactNot in our data — we don’t fabricate firmographics.
Monthly activity
Aug ’240–4 permits/moAug ’26
permits per month permit value
Service area

Typical service area ~5 mi in Denver

The p90 footprint of where Interior Alterations has pulled permits in Denver — drawn from all 417 of their indexed permits. It reflects detected permit activity, not a guaranteed service-area claim.

  • Denver417
Find Commercial Alteration contractors near your branchEnter your address — see who’s pulling these permits in your radius.
Recent permitsLargest recent$982K· 1200 17th St 140 Bldg

Showing 20 of 417 permits by Interior Alterations in the indexed window · most recent first

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Aug 7, 2026
applied May 28, 2026
1700 N Broadway 1200
Commercial Alteration
$87K
Jul 31, 2026
1200 17th St 970 Unit
Commercial Alteration
$64K
Jul 31, 2026
applied May 20, 2026
1801 California 5100
Commercial Alteration
$615K
May 15, 2026
applied Apr 1, 2026
1200 17th St 2775
Commercial Alteration
$100K
Apr 24, 2026
applied Mar 20, 2026
1200 17th St 2750
Commercial Alteration
$426K
Mar 26, 2026
applied Jan 6, 2026
600 N Grant St
Commercial Alteration
—
Mar 2, 2026
applied Feb 26, 2026
1200 17th St 1225 Bldg
Commercial Alteration
$63K
Mar 2, 2026
applied Jan 8, 2026
1200 17th St 140 Bldg
Commercial Alteration
$982K
Feb 12, 2026
applied Jan 21, 2026
1200 17th St 1 Bldg
Commercial Alteration
$139K
Jan 14, 2026
applied Dec 11, 2025
1801 California St 3600 Suite
Commercial Alteration
$324K
Jan 7, 2026
applied Dec 24, 2025
1675 Larimer St
Commercial Alteration
$45K
Dec 23, 2025
applied Nov 25, 2025
1800 Larimer St
Commercial Alteration
$269K
Dec 5, 2025
applied Nov 6, 2025
1801 California St 3875 Suite
Commercial Alteration
$918K
Sep 29, 2025
applied Aug 8, 2025
600 N Grant
Commercial Alteration
$958K
Sep 8, 2025
applied Aug 18, 2025
1700 N Lincoln St
Commercial Alteration
$95K
Sep 3, 2025
applied Sep 2, 2025
2373 15th St
Commercial Alteration
$337K
Sep 3, 2025
applied Sep 2, 2025
1200 17th St 1 Bldg
Commercial Alteration
$47K
Aug 1, 2025
applied Jul 29, 2025
1740 N Broadway
Commercial Alteration
$40K
Jul 21, 2025
applied Jul 17, 2025
1200 17th St 1 Bldg
Commercial Alteration
$80K
Jun 30, 2025
applied Jun 26, 2025
210 N University 200
Commercial Alteration
$45K
Sites Interior Alterations returns to6 in Denver

Addresses where Interior Alterations has pulled repeat permits and the site itself has a deep permit history (25+ permits, all contractors). Each links to that parcel’s full record.

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