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Financial decision

New Construction vs Existing Home

A builder's incentive is real money. So is the rate-lock exposure on a build that finishes nine months from now.

New construction competes on incentives, warranties, and the absence of deferred maintenance. Existing homes compete on price, location, and certainty of timeline. Financing is where the two genuinely diverge, and that is where buyers get surprised.

At a glance

Typical closing timeline
New build: 4–12 months · Existing: 30–45 days
Rate risk
Long builds may need an extended lock or a float-down
Still get an inspection
Yes — new construction included
New Construction

A newly built home purchased from a builder, often with in-house lender incentives, an extended closing timeline, and a structural warranty.

Existing Home

A resale home in an established neighborhood, with a known condition, a short closing timeline, and negotiable price.

Side by side

FactorNew ConstructionExisting Home
Time to closeMonths — sometimes a yearTypically 30–45 days
Price negotiationUsually on incentives, not priceDirect price negotiation
Rate lock exposureHigh — needs an extended lockLow — standard 30–60 day lock
Condition riskLow, plus a builder warrantyAge-related, revealed by inspection
Landscaping, fencing, blindsOften an extra costUsually included
Property taxes at purchaseOften assessed on land only at firstReflects the finished home
A builder incentive tied to their lender is only a discount if the loan itself is competitive. Compare the full Loan Estimate, not the closing-cost credit.

What the guidelines actually say

Plain English first, then the rule as it is published, then what it means for your file.

Builder contributions are capped like any other interested-party contribution

Interested party contributions are limited to 3% of the value for LTV ratios greater than 90%, 6% for 75.01%–90%, and 9% for 75% or less on a principal residence.
Fannie Mae Selling Guide, B3-4.1-02 (Interested Party Contributions)

A builder cannot credit you unlimited closing costs. Anything above the cap must be treated as a sales price reduction, which changes your loan amount and can change your approval.

The appraisal still has to support the price

The appraiser must analyze and report the sales concessions offered by the builder and adjust the comparable sales accordingly.
Fannie Mae Selling Guide, B4-1.3-09 (Adjustments to Comparable Sales)

Heavy incentives can be adjusted out of the value conclusion. A large credit does not guarantee the home appraises at the contract price.

When New Construction is right

You want a warranty and modern efficiency, you can wait out the build, and the builder's total package — after comparing their lender against an outside quote — genuinely beats resale.

When Existing Home is right

You need to move on a defined timeline, you want an established location or mature lot, or you want the leverage that comes with negotiating on price directly.

How to decide

  1. 1Ask the builder for the incentive in writing, including what forfeits it.
  2. 2Get an independent Loan Estimate from an outside lender the same week.
  3. 3Compare the two Loan Estimates side by side — rate, points, and total costs.
  4. 4Ask about extended lock and float-down pricing for the full build timeline.
  5. 5Budget separately for landscaping, window coverings, and fencing.
The bottom line

Take the builder incentive seriously and take the builder's lender skeptically. Get a competing Loan Estimate, price the extended lock, and inspect the new home anyway.

Common questions

Do I need a home inspection on new construction?

Yes. Independent inspections at framing and again before closing routinely find issues the municipal inspection did not cover.

Can I use my own lender on a new build?

Almost always. You may forfeit the builder's closing-cost incentive, so compare the incentive against the rate difference before deciding.

What happens if rates rise during the build?

That is what an extended lock or float-down protects against. Price both early — they are far cheaper to arrange at contract than at month seven.

Verified against published lending guidelines

Every rule stated on this page is traceable to the agency handbook that governs it. Guidelines change — confirm anything time-sensitive with a licensed loan officer before acting on it.

Reviewed by Brian Mix, licensed loan officer (NMLS #111175) · Last checked July 2026.

Still deciding?

Ask RED. It can walk through your specific numbers, explain any term on this page, and point you to the guide that goes deeper — no credit pull, no sales pressure.

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