Updated June 2026 · Mike Certo, NMLS #260555

Jumbo Buy Before You Sell Arizona: Luxury Move-Up Financing

Arizona BBYS deals frequently land in jumbo territory — Scottsdale, Paradise Valley, North Phoenix luxury, Sedona, Tucson Foothills, and Carefree/Cave Creek estates push beyond conforming loan limits. Jumbo BBYS is a distinct underwriting conversation from standard BBYS.

Why jumbo BBYS files underwrite differently

Standard BBYS bridges fit within conforming or high-balance conforming loan limits. Jumbo BBYS bridges sit above those limits, which means:

Liquidity requirements are higher — typically 6-12 months PITIA in reserves on both the bridge and the new mortgage
Asset documentation is heavier — full statements on all liquid accounts, sometimes asset depletion qualifying as backup
Underwriting is manual — files don't fit standardized agency boxes; portfolio underwriting handles the case-by-case math
Pricing is custom — quoted file-by-file based on equity position, asset reserves, and credit profile

Jumbo bridge options in Arizona

For Arizona jumbo BBYS, the working options:

Cornerstone portfolio bridge — manually underwritten, handles bridges up to roughly $2.5M, accommodates self-employed and asset-based qualifying
Private banking bridge — for buyers with substantial existing assets-under-management at private banks; tightly tied to that banking relationship
Asset-based specialty bridge lenders — qualify on assets rather than income; useful for recent tech exits, retired executives, and high-net-worth households with variable income

Common jumbo BBYS scenarios we see

The Scottsdale-to-Paradise Valley upgrade: Selling $1.8M North Scottsdale home to buy $3.5M Paradise Valley estate. Portfolio bridge sized to fund the gap.
The Sedona luxury move: Selling Phoenix metro primary to buy Sedona estate property. Bridge handles the cross-market timing.
The Tucson Foothills retirement upgrade: Phoenix-area sale to fund a Tucson Foothills retirement purchase. Bridge plus possible asset-based qualifying on the new mortgage.
The Carefree/Cave Creek lifestyle move: Move-up from Phoenix metro to north-valley estate property. Larger acreage purchase, typically 2.5M+ price range.

When backup contract is the right jumbo BBYS path instead

Jumbo backup contract works when:

The buyer has substantial cash position for the new down payment (doesn't need bridge proceeds)
The buyer's DTI doesn't support carrying both existing home PITIA and new jumbo PITIA
The buyer wants to avoid the bridge cost and complexity for a short window

The backup contract removes the existing home's PITIA from DTI for qualifying purposes, letting the buyer get approved on the new jumbo mortgage without selling first.

Realistic timeline for jumbo BBYS

Jumbo BBYS files take longer than standard BBYS — typically 35-50 days from contract on the new purchase. Reasons: manual underwriting, multiple appraisal reviews (often two appraisals on larger jumbo sizes), heavier asset and reserve documentation.

Next step

20-minute first call. Bring current home value/mortgage, target jumbo purchase price, rough income/asset position. We map whether portfolio bridge, backup contract, asset-based qualifying, or a hybrid path fits.

FAQ

How large of a bridge can Cornerstone handle?

Standard portfolio bridge handles up to roughly $2.5M; larger configurations are case-by-case through specific portfolio paths. We work many $1.5M-$2.5M files.

Do I need to be a Cornerstone customer to use the portfolio bridge?

No — first-time clients are welcome. Most jumbo BBYS files are first transactions with Cornerstone.

Can asset depletion qualifying combine with jumbo bridge?

Yes — asset depletion can qualify the new jumbo mortgage while the bridge handles the cash side. Useful for high-net-worth buyers with variable income.

How does jumbo backup contract compare to bridge?

Backup contract solves DTI, not cash. If you have the cash but can't qualify, backup wins. If you need the bridge proceeds for down payment, bridge wins. Sometimes both layer.