Section 2
Builder Contract vs Standard AAR Purchase Contract
This is the most important section of this guide, and the place where most new construction buyers — particularly first-time new construction buyers — run into serious trouble. The contract you sign when buying a resale home and the contract you sign when buying new construction from a builder are fundamentally different documents with fundamentally different protections — or more accurately, fundamentally different lack of protections — for the buyer.
The Critical Difference: Who Wrote the Contract?
When you purchase a resale home in Arizona, the transaction is governed by the Arizona Association of Realtors (AAR) Residential Purchase Contract. This is an industry-standard form that has been negotiated, refined, and tested over decades. It was designed to be roughly balanced between buyers and sellers, its provisions have been interpreted in Arizona courts, it incorporates statutory requirements and disclosures mandated by Arizona law, and every experienced real estate agent on both sides of the transaction knows every clause from memory. It is not a perfect document — no contract is — but it is a known quantity with established buyer protections.
When you purchase new construction from a builder, you sign the builder's own purchase contract. This document was not designed by the AAR. It was drafted by the builder's legal team with one primary objective: to protect the builder's interests, limit the builder's liability, and maximize the builder's ability to manage its construction timeline, pricing, and business operations. There is nothing legally wrong with builders having contracts that protect them — but buyers need to understand clearly that these contracts are NOT the balanced, tested AAR form. They are heavily weighted in the builder's favor, and if you sign without understanding the implications, you may find yourself in a position where the builder has extensive rights you did not anticipate and your remedies are far more limited than you assumed.
The Most Important Thing to Know
A builder's sales agent works for the builder. Their job is to sell homes for the builder at the best possible price and terms for the builder. They cannot give you unbiased legal advice about the builder's contract. Hire your own buyer's agent and, for significant contract concerns, your own real estate attorney. These protections cost you very little — your buyer's agent is paid by the builder — and the protection is enormous.
Key Builder Contract Terms — Explained in Full
1. Deposit Structure and Refundability
Standard AAR resale contracts typically involve a relatively modest earnest money deposit, often 1% or a flat $5,000 to $10,000 amount, that is held in a neutral escrow account and returned in full if the buyer cancels during the standard 10-day inspection period. Builder contracts work very differently, and at a much higher financial stakes level. You will typically make multiple deposits at different stages of the purchase process, and the refundability of those deposits varies enormously from contract to contract — and is often not clearly explained by the builder's sales team in the initial enthusiasm of the sales experience.
The initial signing deposit is commonly 1% to 5% of the purchase price. On a $550,000 home, that is $5,500 to $27,500 leaving your bank account at contract signing. Then, when you attend your design center appointments to select finishes and upgrades, builders frequently require additional "option deposits" of $10,000 to $30,000 or more to lock in your upgrade selections. These design center deposits may be entirely non-refundable from the moment you make them, or may be refundable only under very narrow, specifically enumerated circumstances. Read the refund provisions of your contract with exceptional care before signing anything, and before attending any design center appointment.
The situations in which deposits are typically refundable include: the builder cannot obtain necessary permits within a specified period; the home cannot be completed by a longstop date in the contract; or the home fails to appraise and you cannot qualify for financing on revised terms. The situations in which deposits are NOT refundable typically include: you change your mind; your financial situation changes; interest rates have moved and you can no longer comfortably afford the payment; you can't qualify for financing due to changes in your credit profile; or you exercise a cancellation for any reason not specifically listed as a buyer-out in the contract language. Know which bucket your cancellation reason falls into before you are in a position where you might need to cancel.
2. The Inspection Period vs the Punch List Process
The AAR Residential Purchase Contract includes a standard 10-day inspection period during which the buyer can conduct any inspections they choose and, after reviewing the results, either accept the property as-is, negotiate repairs using the BINSR (Buyer's Inspection Notice and Seller's Response), or cancel the contract entirely and receive their earnest money back. This is one of the most powerful buyer protections in Arizona real estate. Builder contracts for new construction typically do not include this standard inspection period, for an obvious reason: in most cases, the home isn't built yet when you sign, so there is nothing to inspect at that stage.
Instead of a BINSR-based process, new construction uses a "punch list" process at or near the completion of construction. As the home approaches completion, the buyer participates in a walk-through with the builder's construction superintendent or warranty manager. During this walk-through, both parties identify items that need correction before or at closing — paint touch-ups, door adjustments, incomplete trim work, grout cleanup, appliance function verification, garage door adjustment. The builder commits to addressing punch list items, and most items genuinely are addressed. But this process has meaningful limitations compared to the BINSR approach: you typically cannot cancel the contract based on what you find during a punch list walk-through; the punch list process focuses on visible, surface-level issues rather than the deeper systems inspection a professional home inspector would perform; and the timing and scope of punch list repair commitments are defined by the builder's contract, not by a neutral industry form.
This is precisely why I recommend hiring an independent professional home inspector at the pre-drywall stage (when framing, plumbing rough-in, and electrical rough-in are all visible) and again at Month 11 of ownership (just before the one-year workmanship warranty expires). These inspections catch issues that neither the punch list walk-through nor your own eyes during a final walk-through would identify, and they create documented evidence of any issues before warranty periods expire.
3. Price Lock and Material Escalation Clauses
One of the genuine advantages of most new construction purchase contracts is price lock — the purchase price you agree to at signing is typically the price you pay at closing, regardless of what happens to construction material costs, labor costs, or land values during the build period. If lumber prices spike 20% during your build, that's the builder's problem, not yours, under a standard price-locked contract. This price certainty is real and valuable, and it is one of the meaningful advantages new construction offers over a resale transaction.
However, buyers should know that some builders — particularly in the wake of the severe supply chain disruptions of 2020 through 2022, when lumber and materials costs increased dramatically mid-construction — introduced material escalation clauses into their contracts. These clauses allow the builder to increase your purchase price if material costs exceed a certain threshold during the build period. Such clauses are less common now than they were during peak supply chain disruption, but they have not entirely disappeared. If you see language in your builder's contract referring to material cost adjustments, escalation provisions, or price modification rights, pay extremely close attention. Understand the trigger conditions, any cap on the escalation amount, whether you receive advance notice, and whether you have a right to cancel without penalty if an escalation is invoked.
4. Close of Escrow Flexibility and the Rate Lock Problem
One of the most practically challenging aspects of new construction for buyers in the current mortgage rate environment is timeline uncertainty. Builder contracts almost universally include provisions giving the builder significant flexibility to push the close of escrow date. Construction delays are common and have many causes: weather (including the monsoon season in Phoenix during July and August), municipal inspection backlogs, permit processing delays, subcontractor scheduling conflicts, supply chain disruptions for specific materials, and simply the complexity of managing dozens of simultaneous construction projects across a community. Builder contracts typically address this by giving the builder the right to extend the closing date by weeks or even months without paying penalties to the buyer for the delay.
Why does this matter so much financially? Because mortgage rate locks are expensive to extend. A standard rate lock costs a lender a specific amount to hold your rate for a specific period — usually 30 to 60 days for a standard resale transaction. For new construction, where the build may take 8 to 18 months, builders typically offer extended rate lock programs through their preferred lenders. If you're locking with an outside lender, you face a real problem: standard rate locks of 60 to 90 days cost significantly more per day than standard locks, and if the builder delays closing, you either pay to extend your lock (at 0.125% to 0.25% of the loan amount per 30 days — $625 to $1,250 on a $500,000 loan per 30-day extension) or you allow the lock to expire and relock at whatever current market rates happen to be. Plan for this from the beginning of the financing conversation with your lender.
5. Preferred Lender Incentives — Do the Full Math
Every major builder operating in Phoenix offers buyer incentives for using their preferred (builder-affiliated) lender. These incentives come as closing cost credits, design center upgrade credits, rate buydown contributions, or combinations of all three. The stated value commonly ranges from $5,000 to $30,000 or more, and builder sales teams advertise them prominently because they are genuinely significant-sounding amounts. They look like clear wins. They frequently are not — at least not without careful comparison shopping.
Here is the fundamental math that builder sales teams do not volunteer. A mortgage interest rate that is 0.25% higher than the best rate available from a competitive outside lender costs approximately $87 per month more in interest on a $500,000 loan. Over five years, that is $5,220 in additional interest paid. Over seven years — roughly the median tenure in a home — that is $7,308. Over the life of a 30-year loan, the difference is approximately $31,200 in additional total interest paid. If the builder's incentive is $10,000 in closing cost credits, and the rate differential is 0.25%, you break even in interest cost terms in roughly six years — and after that, the outside lender financing was mathematically superior. If the rate differential is 0.375% or greater, even larger incentives may not overcome the long-term interest cost difference.
The correct approach: request a complete Loan Estimate from the builder's preferred lender AND from at least two outside lenders. Under RESPA, lenders are required to provide the standard Loan Estimate form within three business days of application. Compare these line by line: interest rate, APR, estimated monthly payment, and total interest paid over 5, 10, and 30 years. Ask your buyer's agent to help you run this comparison — the math is straightforward but the implications are significant. Sometimes the builder's preferred lender is genuinely competitive and the incentive is essentially free money. More often, there is a meaningful trade-off that favors outside lender financing for buyers who plan to stay in the home more than five to seven years.
6. Lot Premiums
Within any given builder community, not all lots carry the same base price. Builders charge "lot premiums" for locations within the community that have desirable characteristics: cul-de-sac positioning (limited drive-through traffic, typically a wider lot back), backing onto open space or a natural wash (no rear neighbors, a rare and valuable feature in Phoenix's dense suburban development patterns), corner lots (more windows, typically more natural light), elevated lots with view potential, greenbelt or park-adjacent lots, and lots positioned away from the community's main entry road, commercial adjacencies, or high-traffic amenity areas. Lot premiums in Phoenix new construction communities can range from $5,000 for a minor location advantage to $50,000 or more for a highly sought-after premium location within a desirable phase.
Lot premiums have genuine real estate value in most cases. A resale home on a premium lot within a community does typically command a higher sale price than an identical floor plan on a standard interior lot — the market recognizes the value of open space backing, of cul-de-sac privacy, of view positioning. But lot premiums are also one of the areas where, under the right market conditions, builder's agents and buyer's agents can negotiate. If a community has been open longer than expected, if a phase is winding down with premium lots still available, or if you are buying a spec home that includes a lot premium already built into its price, your buyer's agent may have leverage to negotiate reduction or elimination of the lot premium in lieu of an explicit price reduction. This is exactly the type of negotiation that requires someone in your corner whose job is to advocate for you.
7. Cancellation Rights
In a standard AAR resale contract, buyer cancellation rights are comparatively robust. You can cancel during the inspection period for any reason and receive your earnest money back. You can cancel if the home doesn't appraise and the seller refuses to reduce the price to meet appraisal. You can cancel if you are unable to obtain mortgage financing despite good faith efforts (documented properly through the financing contingency process). Builder contracts are far more restrictive on cancellation rights. The circumstances under which you can exit with your deposit returned are typically explicitly and narrowly enumerated — a short list of specific scenarios, not a broad right to cancel if your situation changes. Understand this clearly before you sign. If life changes — job loss, health event, divorce, significant change in financial circumstances — and you find yourself needing to exit a builder contract, your options may be limited and your deposits may be at significant risk of forfeiture. This is not unique to any specific builder; it is a feature of how new construction contracts work industry-wide.
Bottom Line on Builder Contracts
Never sign a builder's purchase contract without having your buyer's agent review every material term with you. For large deposits or provisions you don't fully understand, consider a one-hour consultation with an Arizona real estate attorney — typically $200 to $400 — which is a small fraction of 1% of the transaction value and can save you from a very expensive misunderstanding. The builder's contract is a professional legal document prepared by professional lawyers to protect the builder. You deserve the same quality of professional guidance protecting your interests.