What happens at the end of a custom home build?

The end of a custom home build runs through five steps in a fixed order: the final inspection, the certificate of occupancy, the orientation walkthrough, the loan conversion and closing, and the keys. The city or county inspector signs off that the finished home meets code. The building department then issues the certificate of occupancy, the document that makes the home legal to live in. You and your builder walk the home so you know how it works and what still needs fixing. Your construction loan converts to a permanent mortgage at closing, and you take possession.

Each step depends on the one before it, like links in a chain. You cannot get the certificate of occupancy until the final inspection passes. Most lenders will not close the permanent loan until the certificate is in hand. Knowing the order tells you what to expect in the last few weeks and where a delay can stall the others.

Final inspection: the city signs off

The final inspection is the last code inspection of the build, where a city or county inspector confirms the completed home matches the approved plans and the building code. It comes after every earlier inspection has passed: foundation, framing, rough electrical, rough plumbing, mechanical, insulation, and more (see the full list of inspections required when building a house in Arizona). The inspector checks that everything required by code is done. Cosmetic items like a missing coat of paint do not always hold up a final, but anything tied to safety or code must be complete first. In unincorporated Maricopa County, the rule is that "all elements required by code or ordinances must be completed prior to final inspection."

Passing the final is the trigger for everything that follows. In Maricopa County, once the final inspection is done, the inspector directs staff to send a clearance number to the servicing utility. That clearance is what lets the power and water meters be released to the home. So the final does double duty. It clears the home for its certificate. It also releases the utilities you need to live there. In an Arizona summer, that meter release matters, because a home with no released power has no working air conditioning.

If the inspector finds a code problem, the home does not pass. You get a written list of corrections. Your builder fixes those items and calls for a re-inspection. This is normal on a custom build. It usually adds days, not weeks. The final inspection is the gate that controls the rest of the end-of-build sequence. A clean pass keeps the certificate, the closing, and your move-in date all on track.

Certificate of occupancy: the home becomes legal to live in

The certificate of occupancy, often shortened to CO, is the document your city or county issues stating that the home is complete, meets code, and is legally safe to occupy. It is issued right after the final inspection passes. The City of Scottsdale issues a certificate of occupancy "upon passing a Final Inspection, allowing for ... a homeowner to move in." Until that point, the home is a job site, not a residence.

This step is backed by building code, not just local habit. Under Section R110 of the International Residential Code (IRC), the model code Arizona cities and counties adopt, "no building or structure shall be used or occupied ... until the building official has issued a certificate of occupancy." Mohave County's building ordinance adopts the 2018 IRC. It restates the rule plainly. No building shall be used or occupied until a certificate of occupancy is issued. That is why pulling a moving truck up early is not just risky. It is against code, and it can put your insurance and your loan at risk too.

If a few minor items remain but the occupied parts are safe, the city can issue a temporary certificate of occupancy (TCO) instead, with a deadline to finish the rest. Either way, the certificate of occupancy is the legal hinge between a finished build and a home you can live in. Your lender will almost always require it before closing.

Orientation walkthrough: learning your new home

The orientation walkthrough, sometimes called a home orientation or handoff walkthrough, is the walk you and your builder take through the finished home so you learn how its systems work. Your builder shows you the breaker panel, the main water shutoff, the irrigation timer, the HVAC thermostat and filter sizes, the water heater, and how to operate appliances and smart features. They point out maintenance you own from day one, like changing filters and flushing the water heater.

This walk is different from the punch-list walkthrough, where you hunt for defects, and from the pre-drywall walkthrough, where you check framing and wiring before the walls close. The orientation is about operation and care, not just flaws. Think of it as the home's owner's manual, taught in person by the people who built it. You learn how the systems run and what upkeep keeps them running. In practice many builders combine the final defect check and the orientation into the same visit, so you may do both at once. Either way, bring a notepad and a phone, and ask where the shutoffs are. Knowing how to kill the water or the power fast is the single most useful thing you can learn before you move in.

Loan conversion, closing, and keys

The build ends financially when your construction loan converts to a permanent mortgage at closing. A construction loan is, in the Consumer Financial Protection Bureau's words, "usually a short-term loan that provides funds to cover the cost of building" a home, paid out "in a series of advances as the construction progresses." Those advances are the draws your builder pulls against the draw schedule as work hits milestones. When the home is done, that short-term loan is paid off and replaced by a long-term mortgage.

If you have a single-close (one-time-close) loan, the conversion happens automatically and there is no second closing. If you have a two-close loan, you apply for and close a separate permanent mortgage to pay off the construction loan. The certificate of occupancy is central to this step. Under the Fannie Mae Selling Guide, when a construction-to-permanent loan funds both the lot and the build, "the lender must retain a certificate of occupancy or an equivalent form from the applicable government authority." So the CO you got two steps earlier is what unlocks the loan conversion.

At closing, you sign the final loan and title paperwork. The lender funds the permanent loan. The title company records the deed with the county. Then you get the keys. The whole end-of-build sequence, from final inspection to keys, often runs two to four weeks once the home is substantially done. A failed inspection or a back-ordered part can stretch it. Plan the last month as its own phase. Four separate parties have to do their part before you move in: the inspector, the building department, the lender, and the title company. Tracking each one keeps the others from slipping.

Where Jematell Homes comes in

We are a licensed, family-owned Arizona custom home builder. Every project is different, so we will confirm the specifics for your parcel and budget with you directly.

Sources

• 2018 International Residential Code (IRC), Chapter 1, Section R110 (Certificate of Occupancy)
• Mohave County, Arizona Building Ordinance 2021-03 (adopts 2018 IRC; restates R110.1 occupancy rule)
• Consumer Financial Protection Bureau: What is a construction loan?
• Fannie Mae Selling Guide B5-3.1-01 (Conversion of Construction-to-Permanent Financing)