Quick answer: A home addition in Longmont typically goes through inspections at the footings, foundation, underground plumbing, framing, rough electrical, plumbing and mechanical, insulation and final. Your permit card lists the exact inspections for your project. Each one has to pass before the next phase of work can cover it up.
Why Inspections Matter
Inspections protect you. They catch problems while they are still visible and cheap to fix, and a final inspection is proof the work was done to code when you sell or file an insurance claim. Unpermitted additions often have to be opened up, corrected or even removed later.
The Typical Inspection Sequence
- Footing inspection. Trenches dug to the required depth below the frost line, with rebar set, before concrete is poured.
- Foundation wall inspection. Forms, rebar and anchor bolt placement before the walls are poured.
- Underground plumbing. Drain lines under a slab are tested before they are buried.
- Framing inspection. Walls, headers, beams, roof framing, sheathing and connectors.
- Rough electrical, plumbing and mechanical. Wiring, pipes, ducts and vents while walls are open.
- Insulation inspection. Insulation levels and air sealing meet the energy code.
- Final inspection. Everything complete and safe to occupy.
Our post on addition foundations, footings and stem walls explains what the inspector is looking at in the first two steps.
What Causes Failed Inspections
- Footings not deep enough or missing rebar.
- Missing hold-downs, hurricane ties or hangers in the framing.
- Wiring not stapled, boxed or protected correctly.
- Insulation gaps or missing air sealing.
- Work covered up before it was inspected.
How a Building Contractor Keeps the Job Moving
Scheduling inspections, being on site when the inspector arrives, and fixing any correction the same day is a big part of what a building contractor does. A failed inspection that sits for a week stops every trade behind it.
We build additions, ADUs and garage apartments as a building contractor in Longmont, and handle the permit from submittal to final. Planning an ADU? See our ADU and home addition guide.
Frequently Asked Questions
How many inspections does a home addition need?
Usually seven or more, from footings to final. Your permit card lists the inspections required for your project.
Who schedules the inspections?
Your contractor normally schedules them and meets the inspector on site.
What happens if an inspection fails?
The inspector lists corrections. The contractor fixes them and requests a re-inspection before work continues.
Can I build an addition without a permit?
You should not. Unpermitted additions cause problems at resale and with insurance, and may have to be opened up or removed.
Planning an Addition in Longmont?
Josh Brooks Construction and Renovation Inc. is a licensed general contractor in Longmont with 30 years in construction, serving 46+ Front Range cities. We handle design coordination, permits, every inspection and every trade under one contract. Call 720-828-7997 or text 720-453-5095.
Licensed. Local. Not a storm chaser.


