No. A builder cannot require you to use their preferred or affiliated lender to buy the home — federal law (RESPA) prohibits conditioning the sale on it. What builders can do is offer incentives, sometimes large ones, that only apply if you use their lender. So the real question is not "do I have to?" but "is the incentive worth it once I compare complete offers?"
What a preferred lender actually is
A "preferred lender" is a mortgage company the builder has a relationship with — sometimes an independent lender they trust, and often an affiliated business the builder partially owns. When the builder owns a stake, they are required to disclose it in an Affiliated Business Arrangement (AfBA) disclosure. Read that document; it tells you who profits from your loan.
Builders like preferred lenders for legitimate reasons: visibility into buyer files, predictable closings, and lenders who understand construction timelines. Those are real operational benefits — for the builder. Whether the arrangement benefits you depends entirely on the offer.
Your legal protections
Under the Real Estate Settlement Procedures Act, a seller cannot require you, directly or indirectly, to purchase title insurance from a particular company, and builders cannot condition the sale itself on using their lender. You are free to finance the purchase with any lender licensed in your state.
Incentives are the legal gray-area-that-isn't: builders may offer credits contingent on using their lender, as long as the incentive is genuinely available and the arrangement is disclosed. That is why incentive-tied lending is everywhere in new construction.
How to evaluate the incentive honestly
A closing-cost credit is only worth something if the underlying loan terms are competitive. The clean way to compare:
- Get a Loan Estimate from the preferred lender and at least one outside lender within the same few days, for the same loan program and lock structure.
- Compare the full picture: origination charges, lender credits, and the terms themselves — not just the incentive line.
- Subtract the incentive from the preferred lender's total costs, then compare bottom lines side by side.
- Watch the timing: some incentive quotes are only honored if you commit early, before you have anything to compare against. Push back on that.
When the preferred lender is genuinely the right call
Sometimes the preferred lender wins the comparison outright — incentives can be real money, and an affiliated lender that knows the builder's construction schedule can be smoother on extended rate locks and completion-date changes. If the numbers favor them after a true side-by-side comparison, take the deal without guilt.
The mistake is not using the preferred lender; the mistake is using them without comparing. Builders count on buyers never getting a second offer.
How to say no gracefully
If an outside lender wins, you do not need to negotiate hard or justify yourself. Tell the sales office you will be financing with your own lender, provide the pre-approval they need for the contract, and keep both lenders informed of build milestones. Builders close outside-financed deals every week; the process is routine.
One caveat: most builders will still require you to pre-qualify with their lender even if you do not use them. That is allowed, costs you nothing but time, and does not obligate you.
Questions to ask before you decide
Bring these to both lenders before your contract deadline:
- Is the incentive contingent on a specific loan program, or any program you offer?
- What happens to my terms if the construction timeline slips past my lock?
- How are my builder deposits credited at closing? (See down payment on new construction.)
- Who owns the lender, and can I see the affiliated business disclosure?
- Can you match or beat the complete offer I have in hand?
Frequently Asked Questions
Can a builder refuse to sell to me if I use my own lender?
No. Conditioning the sale on using an affiliated lender violates RESPA. Builders can require you to pre-qualify with their lender and can tie optional incentives to using them, but the sale itself cannot depend on it.
Are builder lender incentives real money?
Often yes — closing-cost credits and upgrade allowances can be substantial. But they only have value relative to the loan terms attached to them. A large credit attached to uncompetitive terms can cost more than it gives. Always compare complete Loan Estimates.
Do I have to pre-qualify with the builder's lender?
Most builders require it as a condition of the contract, and that requirement is generally permissible. Pre-qualifying does not obligate you to finance with them — you can still close with any lender you choose.
Will using an outside lender slow down my closing?
Not if the lender is experienced with new construction. The keys are an accurate completion timeline, a lock strategy built for construction, and communication with the builder's closing coordinator. Ask any outside lender how they handle builder closings before committing.
Planning a new construction purchase?
The Cook Brothers Mortgage Team finances new builds every day — for buyers and for builders. Get straight answers on your scenario.
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