Sequence of Inspections

These are the most common inspections that are required for a typical single-family residence.  Some of the listed inspections may not be applicable to your project. Other inspections not listed may be required for less typical projects.  Please refer to your inspection signature card for a complete list of inspections.

Preliminary Driveway

Performed when a driveway permit is required.  This inspection reviews the location of the proposed driveway, including grade, drainage, and land ownership (easements, etc.) issues.  A listing of requirements accompanies the driveway permit. These parameters must be met by the time of the final driveway inspection.

Preliminary Defensible Space

This inspection determines if the proposed structure, whether a residential or accessory structure, is subject to risk from wildfire.  If so, a detailed assessment is written giving minimum fuel modification requirements that must be performed prior to Final Defensible Space inspection approval.

Concrete-Encased Electrode

(Ufer Ground) This inspection is preformed by the Building Division or by the foundation engineer prior to the concrete being placed. If the foundation engineer performs the inspection the specifics of the installation must be provided on the Douglas County Concrete-Encased Electrode Form 

Caisson/Footer

This inspection shall be performed by your engineer prior to any concrete being placed.  A Colorado Registered Professional Engineer shall perform this inspection.  You shall provide the approved Engineering Inspection letter to the Building Division 24 hours prior to requesting any Rough Inspections. Foundation Compliance Form

Foundation Insulation Inspection (Insp. # 114)

For insulation that will be covered by backfill or structural floors.  The monolithic slab and post-tension slab insulation shall be inspected before the placement of concrete.

Foundation Steel

This inspection shall be performed by your engineer prior to any concrete being placed.  A Colorado Registered Professional Engineer shall perform this inspection.  You shall provide the approved Engineering Inspection letter to the County 24 hours, prior to requesting any Rough Inspections. Foundation Compliance Form 

Foundation Drain

The installation of a foundation drain may be required according to your soils report.  If a drain is recommended in the report, it becomes a requirement by code.  This inspection is to be performed by your engineer. Foundation Compliance Form

Construction Meter

This inspection is performed when the builder/owner or licensed electrician has set the temporary service to be used during the construction of the residence.  Ground-fault circuit-interrupter (GFCI) protection of all 125 volt 15, 20 and 30 amp receptacles must be provided on all job sites. Receptacles of higher amperage and voltage will also need GFCI protection or assured equipment grounding conductor program, per NEC 590.6 (B) (2). Only the use of approved extension cords is acceptable.  Use of illegal extension cords may result in the removal of the electrical meter.

Underground Plumbing (or under floor)

This inspection is performed when the base plumbing drainage system is in place.  The inspection must be approved prior to placement of concrete or floor sheathing.  The system shall be on test at the time of the inspection by either a 10-foot head of water, or for systems other than plastic, five pounds of air shown on a 30 psi gauge. All plumbing under floors shall be suspended a minimum of three inches above the ground to allow for soil expansion.

Structural Floor

This inspection is performed at the same time as the Underground Plumbing inspection on all basement wood or steel joist floor-framing systems prior to installation of the floor sheathing.  Permittee shall provide an acceptance letter from a Professional Engineer for all concrete-over-steel floor systems, to be provided on site to the inspector at the time of County inspection.

Electrical Trench

This inspection is to be performed while the trench is open with the proper wire or conduit in place.  A warning ribbon shall be placed 12” inches above the underground installation.

Electrical Slab

This inspection is required when electrical conduits are installed under any concrete prior to placement of concrete.

Exterior Underground Gas Line

This inspection is to be performed when the gas pipe is factory coated for use underground with all joints and or fittings wrapped and installed in the trench. Steel gas pipe (galvanized or black iron) shall be of an approved material. Burial depth for steel pipe shall be no less than 12” inches below grade. The test for such piping shall be 10 psi on a 30 psi gauge for no less than 15 minutes, with no perceptible drop in pressure. Approved Polyethylene (PE) pipe may be used in exterior buried piping systems. The test for such piping shall be 10 psi on a 30 psi gauge for no less than 30 minutes with no perceptible drop in pressure. The burial depth for PE pipe shall be no less than 12” inches below grade with approved metallic risers on each end. An electrically continuous number 18 AWG yellow tracer wire or other approved material shall be installed with and attached to underground non-metallic gas piping and shall terminate above grade at each end. CSST shall be installed and bonded in accordance with the code and the manufacturer’s specifications.  These tests shall be made using air, CO2, or nitrogen pressure only. For installation and testing gas pipe materials other than those listed above consult the piping manufacturer and the Building Division for approved methods.

Individual lines to outside lights, grills or other appliances shall be installed a minimum of 8” inches below finished grade, provided such installation is installed in locations not susceptible to physical damage.

Exterior Sheathing

Inspection of exterior wall sheathing and fasteners, Including shear walls, prior to the installation of building paper, weather resistive barrier, or any other exterior finish.

Thermal Envelope (also known as Exterior House Wrap)

All house wrap, air barrier or suitable film shall be installed in accordance manufacturer’s recommendations, including overlapping, inside corners and taping.  All penetrations through the building wrap have been sealed.   Window and door flashing has been installed in accordance with manufacturer’s specifications.

Exterior Lath

Exterior Lath inspections are performed prior to the installation of stucco or synthetic stucco material. Building paper, lath and all flashing (including weep screed) shall be installed prior to this inspection.

Moisture Barrier

Moisture Barrier inspections are performed prior to the application of masonry or stone veneer.  All flashing is in place and the weather resistive barrier must be properly lapped and sealed at all penetrations including windows and doors. Diamond lath or equivalent shall be installed for stone. Brick ties shall be installed for masonry.

Roof Truss

Stamped Engineered roof truss drawings including the master layout sheet, shall be available on site at the time of inspection.  All roof trusses shall be installed with the roof sheathing in place, including all associated hardware and bracing.

Rough Energy Compliance

All joints, seams and penetrations shall be caulked, foamed, or otherwise gasketed to prevent air leakage.  Factory labels must remain on the glazing to show fenestration, solar heat gain and air leakage.  Air tight recessed lighting in attic spaces, required dampers (mechanical or gravity) and insulation behind junction boxes in exterior walls and all air barriers shall be in place for this inspection.

Drip Edge

Drip edge flashing is required on both eaves and rakes of asphalt shingle roof assemblies.  Douglas County requires 4×2 drip edge flashing at the eaves, and 2×1 minimum or “D” style at the rakes.  These flashings shall be fastened at 12 inches on center with approved roofing nails. Underlayment shall be installed over the drip edge flashing at eaves.  Rake flashing shall be installed over the drip edge flashing and underlayment.

Before any rough inspections may be requested, copies of the foundation inspection reports and a professional survey, not an Improvement Location Certificate, shall be submitted to the County 24 hours before scheduling.

Rough Electric

This inspection is to be performed when all of the wire and boxes have been installed. Grounds and neutrals shall be “made up” at the boxes and home runs completed to the panel location.  All low voltage systems (specialty lighting, telephone, data, cable, security, etc.) must be installed at the time of the Rough Electric Inspection

The structure must be “dried-in” (policy 95-09) at the time of the rough electrical inspections.  All of the framing, plumbing and mechanical work has to be completed before calling for a rough electric inspection.

Electric Service Equipment (formerly “Temp Heat” inspection)

This inspection is typically performed at the same time as the Rough Electric. This inspection is for the electrical panel, main disconnect, meter box and grounding electrode system. In addition, two circuits are required to be complete and ready for power, the furnace circuit and a circuit that is GFCI protected to provide temporary power.  The electrical meter shall be installed before the Final Electric inspection.

Rough Frame

This inspection is performed once all of the framing, plumbing, and mechanical rough-ins are completed.  This inspection may be requested on the same day as the Rough Electric, but cannot be requested before requesting a Rough Electric inspection.

Interior Gas Line

This inspection is typically performed at the same time as the Rough Frame inspection.  The pipe system must be completed and tested with a 10 pound air test on a maximum 30 pound gauge, unless alternative piping is used.

Insulation-Mechanical Systems

This inspection shall be requested after Rough Frame Inspection has been approved.  This inspection is to verify that all supply and return air ducts outside the conditioned space are insulated in accordance with IECC Section 403.2.  All Mechanical and Circulation hot water systems shall be insulated in accordance with Section 403.3 and 403.4.

Insulation

This inspection is performed after the structure is insulated and vapor retarders are installed where required.  This inspection includes all cavity or continuous (blanket) insulation that will be concealed.  For blown in attic insulation, baffles at soffit vents and inch markers every 300 sq. ft. shall be installed at the time of this inspection.

Shower Pan

“Built in place” shower bases shall be lined in accordance with the code and filled with water.  This inspection is typically requested at the same time as the drywall inspection.

 

Drywall

This inspection is performed after all the drywall is in place and fastened per code, prior to beginning drywall tape and finishing.  Metal trim (corner bead) may be installed prior to inspection, but is not required for the inspection.

Form Inspection (Driveway)

This inspection is required when asphalt or concrete is used for the driveway surface.   The scope of the inspection includes only the portion of the driveway that is located within the County right of way or the connection to the private road.

Final Driveway

The final inspection addresses all the criteria specified in the Preliminary Driveway.  This final inspection must be approved prior to the issuance of a Certificate of Occupancy (CO).

Final Defensible Space

This final inspection is also known as the final wild fire mitigation inspection.  This inspection determines if the requirements stated in the Preliminary Defensible Space inspection have been completed.  This inspection must be approved to receive a Certificate of Occupancy (CO).  This inspection applies to all structures located in a wildfire hazard area.

Final Grade

This inspection must be scheduled through the Engineering Division. A Drainage Certificate is required for this inspection and must be approved prior to the issuance of a Certificate of Occupancy.

Final Electric

This inspection is performed when all electrical outlets, lights and switches with cover plates are installed.  The electrical panel must be complete and circuits properly labeled and appliances that are required to be hardwired need to be installed.

Final Energy Compliance

A permanent certificate shall be posted in the area housing the mechanical equipment. The certificate shall be completed by the builder or registered design professional.  The certificate shall list the R-values of insulation installed in or on ceiling/roof, walls, foundation (slab, basement wall, crawlspace wall and or floor) and ducts outside conditioned spaces; U-factors for fenestration.   The certificate shall list the type and efficiency rating of heating, cooling and service water heating equipment.   Crawl space and unfinished basement walls blanket insulation may be inspected at this time.

For Performance Path submittals, a signed certificate shall also be provided that shows the home complies with the originally approved design plans.

A ladder shall be provided by the permit holder for access to attic spaces containing blown in insulation and or mechanical equipment.

Final Building (Final Frame)

This inspection is performed when all life/safety items have been completed and the structure is ready to be occupied.