Loan guideClear answers for your next move

Blueprint progressing through foundation, framing, and a completed desert home — Build a home
One financing path from plans and land through construction and permanent mortgage.

Arizona One-Time Close Construction Loans Explained

Your detailed guide to understanding Arizona's single-close construction-to-permanent mortgages. Navigate contractor vetting, fund control, permits, draws, and final conversion with confidence.

Build once • Close once • Live Arizona.

Understanding the AZ One-Time Close Loan

An Arizona One-Time Close (OTC) construction loan combines financing for the lot purchase (if applicable), construction, and the permanent mortgage into a single loan with one closing. This streamlines the process, saving you time, money, and potential stress compared to traditional two-closing construction loans. Key benefits include:

Single Closing: Secure your interest rate and loan terms upfront, before construction begins. Only one set of closing costs.
Interest-Only Payments: During the construction phase, you typically make interest-only payments on the funds that have been drawn by the builder.
Seamless Conversion: Once construction is complete and a Certificate of Occupancy is issued, your loan automatically converts to a standard principal and interest permanent mortgage without needing to re-qualify or go through another closing.

A crucial part of the OTC process is Fund Control, a third-party service that vets your chosen builder, reviews and approves the construction contract and budget, manages the disbursement of loan funds (draws) to the builder as work progresses, and conducts inspections to verify completion.

Timeline Overview

Phase	Duration*	Activities	Your Action
Contractor Approval	≈ 3	Fund control vets AZ license, insurance, credit.	Provide ROC license.
Project Review	≈ 3	Approval of contract, budget, 5% contingency.	Sign contract & budget.
Loan Closing	≈ 1 wk	Single closing; funds to escrow; 10% draw option.	Provide closing funds.
Construction	0-11 mo	Builder pulls permits; submits draws.	Approve draw requests.
Completion	≈ 1 mo	Provide CO; loan converts to P&I.	Set up PITI autopay.

*Typical estimates, assuming timely documentation.

Documents & Permits

Stage	Key Documents	Arizona Note
Pre-Approval	Std. income/asset docs, tax returns, credit pull.	Ask LO about USDA OTC options for rural AZ builds.
Contractor Approval	Builder App, AZ ROC license, GL Ins. (≥ $1M), WC Cert/Exemption.	Verify license at roc.az.gov.
Project Review	Signed Contract, Itemized Budget (Form C) + 5% contingency, Stamped Plans.	Flagstaff/Prescott often require separate soils reports.
Closing	Valid Photo ID, HOI Binder ('course of construction').	Higher insurance limits may apply in high-fire zones.
Draws	Draw Request (Form E), Invoices, Unconditional Lien Waivers.	Ensure subs use AZ statutory waiver (A.R.S. § 33-1008).
Final Conversion	Certificate of Occupancy (CO), Final Title Update (no liens).	Maricopa County issues e-COs; save the PDF copy.

Draw Process Steps

Step	Action Detail	Responsible Party	Timing
1. Request	Submits Form E, invoices, waivers via portal.	Builder	After milestone complete
2. Review	Validates docs vs. budget; may inspect.	Fund Control	2-3 business days
3. Approval	Electronically approve validated request.	Borrower	Promptly
4. Disbursement	Wires funds directly to builder account.	Fund Control	Same/next day
5. Payment Adj.	Interest-only payment recalculated on new balance.	Loan Servicer	Next statement

Common FAQs

Why is the contingency 5% in Arizona, not higher like Texas?

Arizona aligns with the national 5% standard as typical market conditions don't necessitate the higher risk buffer seen in some other states.

Do I always need a soils report in Arizona?

It's location-dependent. Maricopa County rarely requires it unless known issues exist, while higher-altitude or specific soil areas (like Coconino County) often do.

Can I use architectural plans I already have?

Yes, provided they are complete (all elevations), professionally stamped, and include property/borrower details. They'll be reviewed during project approval.

How is the interest-only payment calculated?

Interest accrues only on funds disbursed. Calculated monthly as:

(Drawn Balance) × (Annual Rate) ÷ 12

Ex: $200k drawn at 7% APR ≈ $1,167/month (interest only). Principal repayment begins after conversion.

Key Terms Glossary

Term	Definition
ROC License	Arizona Registrar of Contractors license required for builders.
Fund Control	Third-party service managing construction funds, draws, and vetting.
Contingency	Budget buffer (typically 5% in AZ) for unforeseen construction costs.
Draw	Scheduled release of loan funds to the builder for verified completed work.
Certificate of Occupancy (CO)	Official permit allowing habitation after construction meets code.
Lien Waiver	Document confirming payment and waiving lien rights for specific work.

Ready to explore your Arizona construction loan options?

Request a Consultation