Guides for pros

General info only. Check with a licensed pro and your local building department.

Official sources only. Unknown means not confirmed yet.

Who licenses what: the state for electricians and plumbers, cities and counties for most other trades.

Workers' comp rules from the state, and what we haven't confirmed yet.

The basics homeowners are told, so you know what they will ask for.

Who can pull permits in Denver and where to look for other cities.

Pre-1978 homes: your firm must be certified.

No-cost ways to be found. No paid ads here.

10-day notice, 4-month filing, 6-month lawsuit — from the statute.

A template that answers what homeowners are told to check.

Required terms under C.R.S. 6-22.

OSHA 6-foot rule for construction.

Employee or 1099? IRS and CDLE tests.

OSHA construction standard basics.

IRS forms and the $2,000 threshold.

Colorado DOR rules by contract type.