Updated June 2026 · Mike Certo, NMLS #260555

Arizona First-Time Home Buyer in New Construction

Arizona has one of the largest new-construction markets in the US — DR Horton, Lennar, KB Home, Taylor Morrison, Meritage and many builders compete across Phoenix metro, Tucson, and beyond. First-time buyers in new construction face specific decisions around builder vs outside lender, incentives, and DPA timing.

By Mike Certo, NMLS #260555 — Updated June 2026

Key Takeaways

You don't have to use the builder's lender. We put both Loan Estimates side-by-side, because our total cost can beat the builder lender even after you lose the incentives, and we tell you up front when the builder's offer is the better deal.
DPA works on new construction, but timing is the catch: reservation windows run 60-180 days while builds take 6-12 months. Statewide Home Plus offers up to 5% (we run it at a 620 minimum FICO) and Home in Five up to 6.5% in Maricopa County (640 FICO).
You can still be a first-time buyer if you haven't owned a principal residence in the prior 3 years (HUD definition), so a past home doesn't always disqualify you.
Builder credit plus DPA can't exceed the seller-concession cap: FHA 6%, conventional 3-6%, VA 4%, USDA 6%.
Low-down options pair well with new builds: we can write FHA at 3.5% down at a 580 score, or Conventional 97 at 3% down at 620, up to the 2026 conforming limit of $832,750.

Builder lender vs outside lender

Every major Arizona builder has an in-house or partner lender they push hard. The pitch: incentives, faster closing, builder-trust. The reality is more nuanced.

Builder lender incentives

Closing cost credits — typical $5K-$15K toward closing costs if you use the builder lender
Rate-lock advantages — long-window locks specific to builder timeline
Upgrade credits — design center incentives if you use the builder lender
Streamlined process — builder and lender coordinate timeline directly

Outside lender advantages

Independent pricing comparison — verify the builder lender's pricing is actually competitive
Different product menu — DPA pairing, MCC eligibility, non-builder programs the builder lender may not offer
No conflict of interest — your lender isn't financially tied to the builder relationship
Established relationship — Cornerstone has worked with virtually every major Arizona builder

How to decide

Run both side-by-side. Get a Loan Estimate from the builder lender AND from an outside lender (us). Compare:

Total APR (includes fees, not just rate)
Cash to close after incentives
Monthly payment
Total cost over the time period you'll keep the loan

The builder lender wins sometimes. Sometimes the outside lender wins by more than the builder incentives offset. The only way to know is to compare.

Rate-lock timing in new construction

New construction typically involves 6-12 month build timelines. Standard mortgage rate locks run 30-60 days. The mismatch creates planning complexity:

Float-down options: Some lenders offer long-window locks with float-down if market improves before closing
Extended locks: 180-day or longer locks available but typically cost more
Lock near closing: Wait until construction is 60-90 days from completion to lock, accepting market risk during build
Builder lender extended locks: Often a real advantage if your build timeline is long

Specific pricing on locks varies by lender and current market — quoted file-specific.

DPA timing with new construction

DPA program reservations have their own windows (typically 60-180 days). New construction timelines often exceed those windows. Strategies:

Reserve DPA late: Hold DPA reservation until construction is 60-90 days from completion
Extend reservations: Document construction delays to extend program reservation
Backup financing: Have plan B in case DPA reservation expires before completion
Re-reservation risk: Program funding tiers can change between reservation expiration and re-reservation

Builder credits + DPA interaction

Most builders offer seller-side credits toward closing costs. Most DPA programs allow seller concessions. But there are caps:

FHA: 6% seller concession cap
Conventional: 3-6% depending on LTV
VA: 4%
USDA: 6%

Combined builder credit + DPA can't exceed the program cap. Plan accordingly.

Working with major Arizona builders

Cornerstone has placed loans on properties from virtually every major Arizona builder:

DR Horton — Phoenix, Buckeye, Goodyear, Queen Creek, San Tan Valley, Maricopa, Casa Grande, Tucson
Lennar — Phoenix metro, Tucson
KB Home — Phoenix metro
Taylor Morrison — Phoenix, Tucson
Meritage — Phoenix metro
Pulte / Del Webb — Phoenix metro, especially West Valley
Shea Homes — Phoenix metro luxury
Ryland / CalAtlantic / Standard Pacific (now Lennar) — various

Next step

20-minute call. Bring target builder community, expected closing date, household income, and FTHB status. We model builder lender vs outside lender side-by-side.

Get an outside-lender comparison

Send a short note. We'll review the builder's offer alongside our pricing so you can decide based on real apples-to-apples math.

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FAQ

Frequently asked questions

Do I have to use the builder's lender to get the incentives?

Often the incentives are tied to the builder's lender, so dropping them can cost you $5,000 to $15,000 in closing credits. But that doesn't make the builder lender cheaper. Sometimes an outside lender's total cost beats the builder lender even after you lose the incentives. The only way to know is to compare both Loan Estimates side-by-side on APR, cash to close, and monthly payment.

Can I use down payment assistance on a new construction home?

Yes, but timing is the hard part. DPA reservation windows usually run 60 to 180 days, while a build takes 6 to 12 months, so the reservation can expire before you close. We hold the Home Plus reservation (up to 5%, 620 minimum FICO) until you're 60 to 90 days from completion and line it up with the builder's schedule.

Am I still a first-time buyer if I owned a home before?

You can be. HUD defines a first-time buyer as someone who hasn't owned a principal residence in the prior 3 years, and a spouse's ownership counts too. Single-parent and displaced-homemaker exceptions also apply. So a home you sold years ago, or a rental you never lived in, may not disqualify you from FTHB programs. See which loan fits.

How long does a new-construction closing take?

Once construction finishes, expect a standard 30 to 45 day closing, the same as a resale. The long part is the build itself, which runs 6 to 12 months from contract. We start your file early so underwriting is ready when the home is done, keeping the final close on the standard 30 to 45 day track.

Can I lock my rate at contract for a 9-month build?

Most standard rate locks run 30 to 60 days, so they won't cover a 9-month build. Extended locks of 180 days or longer exist but cost more, and some carry a float-down if the market improves. Many buyers wait to lock until they're 60 to 90 days from completion. Builder lender extended locks can be a real advantage on long timelines. Pricing is file-specific.

Can I stack a builder credit with DPA?

They can work together, but the combined builder credit plus DPA can't exceed the seller-concession cap for your loan: FHA allows 6%, conventional 3% to 6% depending on LTV, VA 4%, and USDA 6%. DPA also doesn't stack with another DPA program, so you get one DPA per purchase. We plan the credit and DPA together so you don't leave money on the table or blow the cap.