— Business records · Category inferred from name · Snapshot 2026-09-02
Find a listed window & door company in Denver, CO
Explore window & door companies for replacement windows and related work. Check project scope, current credentials and references before hiring.
Listed window & door companies in Denver
96 covered records in Denver. Ratings reflect available enrichment, not a credential check. Confirm source IDs and current status with the relevant authority before hiring.
Don't want to call around? Describe your job once and get matched — free →
Common window & door company jobs in Denver
Use these scope notes to compare proposals and ask more specific questions.
Replace windows
Replacing windows for efficiency, comfort, or condition. Insert replacements preserve trim; full-frame replacements fix hidden rot — a good pro explains which your home needs.
Get matched for replace windows →Entry / patio doors
Installing entry, patio, and sliding doors. Ask how flashing, alignment and finishing will be handled.
Get matched for entry / patio doors →Repair / glass
Repairing hardware, seals, and fogged or broken glass. A fogged double-pane usually needs only the glass unit replaced, not the whole window.
Get matched for repair / glass →Before hiring window & door companies
Compare exact window specifications, installation method, flashing, trim and warranty terms. Ask how measurements and hidden damage will be handled.
Credential checks in Colorado
Colorado regulates electrical and plumbing credentials through DORA. General-contractor requirements are local: the Colorado Attorney General directs consumers to check with the city or county where work will occur.
A Secretary of State business registration is evidence about a business entity, not a trade license. Some ContractorRoster categories are inferred from business names; those categories do not establish that a business is qualified or currently offering the service.
Example: For a Denver remodel, check the local contractor requirements and separately verify electrical or plumbing credentials; a Colorado business registration alone does not answer either question.
Build a local check for the general contractor and a separate trade check
- Identify the city or county with authority over the job address. Ask that office about the general-contractor credential and permit requirements for the specific remodel; a Denver requirement should not be copied into another jurisdiction.
- For electrical or plumbing work, check DORA records separately and match the responsible business or person to the proposal. A Secretary of State business record is not an electrical or plumbing license.
- For covered refrigerant work, ask about the technician’s EPA Section 608 certification. That is an equipment-related federal certification, not a Colorado general-contractor license; apprentice supervision exceptions and certification types are described by EPA.
Example: for an air-conditioning replacement, ask who handles refrigerant, who handles any electrical work, and which local office issues the permit. Three different questions may require three different pieces of evidence.
Scope guidance reviewed 2026-09-23; additional guidance reviewed 2026-09-27. Recheck the official record before hiring.
Sources and limits
Where this list comes from
Our Colorado roster uses covered records from Colorado Information Marketplace. The source snapshot was refreshed on 2026-09-02. Counts describe records in that snapshot, not every business operating in the state.
The window & door companies category is inferred from business names. That classification does not establish a trade license, current operations or eligibility for your project.
Before hiring, match the business and credential number with the relevant authority, check scope and current status, and confirm local permits. Contacts and Google ratings, when present, are separate enrichment rather than licensing evidence.
Data sources and quality standards →Window & Door Companies in Denver — common questions
How many window & door companies are listed in Denver, Colorado?
Our snapshot contains 96 covered records in this city and category, refreshed 2026-09-02. This is not a count of every operating business or a current-status check.
How do I check a Denver window & door company before hiring?
A Secretary of State business registration is evidence about a business entity, not a trade license. Some ContractorRoster categories are inferred from business names; those categories do not establish that a business is qualified or currently offering the service. Match the exact business and credential number at the applicable authority, then check current status, work scope and local permits.
What work should I describe when requesting a quote?
Examples include replace windows, entry / patio doors, repair / glass. Specify the location, scope and timing, and ask which credentials and permits the work requires.
How do I know if I need full-frame or insert window replacement?
Ask for an assessment of frames, moisture damage and the proposed unit's installation instructions. Compare what each option retains, replaces or leaves uninspected.
How do I choose a window installer?
Compare installation experience, flashing details, product specifications and warranties. Identify who performs the installation and who handles trim, repairs and disposal.
What determines the cost of window replacement?
Count, size, frame and glass specification, installation method, access and repairs affect the quote. Compare the same scope, including finishing and disposal.