Construction loan estimate
Monthly payment on a $1.5 million home in Phoenix, AZ with 30% down
Building a $1,500,000 custom home in Phoenix, Arizona with 30% down means a $1,050,000 construction-to-permanent loan, and about $490,688 in cash between the down payment and the interest paid while the house is being built.
- P&I$6,637
- Property tax$575
- Insurance$750
| Total project value | $1,500,000 |
|---|---|
| Down payment | $450,000 (30%) |
| Construction-to-permanent loan | $1,050,000 |
| Interest during the build | $40,688 total over 12 months |
| Cash to plan for | $490,688 |
| Principal and interest | $6,637/mo |
| Property taxes | $575/mo ($6,900/yr) |
| Homeowners insurance | $750/mo ($9,000/yr) |
| All-in monthly after move-in | $7,962/mo |
What you pay while the house is being built
With a construction-to-permanent loan you apply once and close once. During the build the lender releases money to the builder in stages called draws, each tied to completed work, and you pay interest only on what has been drawn so far. On a $1,050,000 loan at 7.75% over 12 months that comes to about $40,688 in total, starting near $565 in the first month and reaching about $6,781 in the last. Some lenders bill those payments monthly; others set up an interest reserve so nothing comes out of pocket until the loan converts. When the home is finished the loan becomes a standard mortgage, usually without a second closing.
Where these numbers come from
Property taxes use Phoenix's average effective residential rate of 0.46% (Maricopa County), verified July 2026 (source). Insurance uses the Arizona average of about $600 per year per $100,000 of home value as of July 2026. The mortgage rate here is a fixed 6.5% assumption and the construction rate is 7.75%; both are editable in the calculator, which also loads the current 30-year fixed average. HOA dues are not included because they vary by community.
Arizona values property in the year before taxes are billed, and bills are paid in arrears in two installments (October 1 and March 1), so a newly built home's first tax bill is usually based on a valuation set before the house existed. Under ARS 42-15105, construction completed after the valuation snapshot is picked up later through a supplemental Notice of Value that the county assessor must issue by September 30 of the valuation year. As a result, the first bill or two often reflects the land only, and buyers should expect the bill to step up to the full home value within one to two years after closing.
Common questions
What is the monthly payment on a $1.5 million home in Phoenix, AZ with 30% down?
About $7,962 a month after move-in: $6,637 in principal and interest on a $1,050,000 loan at 6.5% over 30 years, $575 in property taxes at Phoenix's 0.46% average effective rate, and $750 in homeowners insurance. HOA dues, if the community has them, are on top of that.
How much cash do you need to build a $1.5 million home in Phoenix?
About $490,688: a $450,000 down payment at 30%, plus roughly $40,688 in interest paid across a 12-month build. Closing costs are separate. During construction you pay interest only on the money drawn so far, so the payments start small and grow with each draw, reaching about $6,781 in the final month before the loan converts.
Estimates only, not a loan offer, quote, or preapproval. Jematell Homes is a home builder, not a lender or loan broker. Figures assume draws spread evenly across the build and exclude closing costs. Your lender's terms, your parcel's tax bill, and your insurance quote will differ.
Compare other estimates
Other budgets in Phoenix
A $1.5 million home in other cities
Other down payments
Financing questions
- What is a construction-to-permanent loan in Arizona?
- What are construction loan requirements in Arizona?
- Do I pay interest during the construction phase?
- How much does it cost to build a custom home in Arizona?
- What is a builder allowance and what if you go over it?
- Cost-plus or fixed-price contract: which is better?
Terms to know

Begin Your Build
Relax while we manage every detail, throughout the entire process. Tell us about your vision, and we'll be in touch to schedule a consultation.

