A home of $4M or more in Scottsdale or Paradise Valley is financed in 2026 almost always with a jumbo mortgage, because the 2026 conforming loan limit for Maricopa County is $832,750 — 18.5 percent of the $4,500,000 representative price used on this page. Buyers here bring far more than a standard down payment: many pay cash or close to it, and those who borrow tend to structure the loan around capital they would rather not sell. One structure built for exactly that position is The Family Office Mortgage, a privately offered program that pairs a jumbo mortgage with a structured financial product for households buying a home of $4M or more.
Why nearly every purchase here is a jumbo loan
Each year the Federal Housing Finance Agency sets the largest mortgage Fannie Mae and Freddie Mac may buy. For 2026 the limit is $832,750 for a one-unit home in most of the country, rising to $1,249,125 in the highest-cost counties; the FHFA's published county list places every Arizona county, Maricopa included, at the baseline figure.
The arithmetic leaves no middle ground. A buyer financing 80 percent of a $4,500,000 home takes a $3,600,000 loan — more than four times the county limit. Across the price points that define this market, from the $4,000,000 tier of golf and patio homes in North Scottsdale to eight-figure compounds in Paradise Valley, every financed purchase is a jumbo, and most are several multiples of the limit: the range lenders informally call super-jumbo.
The homes themselves sit in a small set of enclaves. Scottsdale's are concentrated in master-planned, guard-gated communities such as Silverleaf, DC Ranch, Desert Mountain, Troon and Estancia. Paradise Valley, a separate town set between Scottsdale and Phoenix, is known for acre-plus lots on the lower slopes of Camelback and Mummy Mountain, with zoning that keeps commercial development out. Inventory in both is thin, and some of the best homes sell quietly, never reaching the open market. Because a jumbo cannot be sold to the government-sponsored enterprises, each lender keeps the loan or places it privately and writes its own terms — down payment, reserves, rate structure. How an interest-only jumbo mortgage works covers that loan in detail.
How buyers here actually finance
Three patterns recur.
Cash or near-cash. A cash offer removes the lender from the negotiation, and in a market where many sellers are seasonal residents, certainty has real value. The cost is liquidity: once several million dollars are in the house, they come back only through a sale or a new loan, and raising the cash by selling appreciated assets creates a capital gains tax bill that never appears on the closing statement. Paying cash versus financing works through that trade.
A jumbo sized to a large down payment. Buyers who could pay cash often borrow anyway, at 40 or 50 percent down, cutting the interest cost and keeping capital working. Lenders in this range underwrite the whole household: documented income, the assets that remain after closing, and sometimes pledged assets accepted in place of liquidated ones.
Borrowing against a portfolio. Rather than sell positions, a buyer draws on a securities-based line or pledges investment assets to the lender. The portfolio stays intact and the tax event is deferred; what is added is a variable-rate debt against marketable securities, on which a market decline can bring a maintenance call. Buy, borrow, die and where the home fits describes that route and its risks.
Within these, interest-only terms are common at this level: pay only the interest for a fixed period and decide deliberately what repays the principal, rather than letting the loan decide.
The local costs that change the math
Property tax. Arizona's property-tax burden is among the lighter ones in the country — the County Supervisors Association of Arizona cites a 48th-place ranking for 2023 by the Tax Foundation's measure. An owner-occupied home is assessed at 10 percent of its limited property value, not its market value, and the tax rate is set district by district: school districts, the city, the county and any special districts. There is no single Scottsdale rate, and two homes at the same price can carry different bills. Two features matter to a buyer here. First, the limited property value can rise no more than 5 percent a year and is never higher than the property's full cash value; it does not reset to your purchase price the way California's assessed value does, so the seller's long-held tax basis carries forward rather than being wiped out at the sale. Second, a state homeowner rebate appears on the bill as State Aid to Education and offsets part of the school district's primary tax. For an exact figure, the Maricopa County Treasurer's bill for the parcel is the reference; your CPA should model the carry for the specific address.
Transfer fee. Arizona has no real estate transfer tax, and the constitution forecloses one: Article 9, Section 24, adopted by voters in 2008, bars the state, every county, city and district from imposing any new tax, fee or assessment on the conveyance of real property. The only transfer charge at a Scottsdale or Paradise Valley closing is a flat $2 real estate transfer fee per deed under Arizona Revised Statutes § 11-1132, collected as part of the Maricopa County Recorder's recording fee. For comparison, Orange County, California levies $1.10 per $1,000 of price — $4,950 on a $4,500,000 sale. For a household relocating from a coastal market, that absence is one of the cheapest lines on the Arizona closing statement.
The deduction limit. Federal law caps the home mortgage interest deduction at interest on the first $750,000 of debt, or $375,000 if married filing separately, for loans taken out after December 15, 2017, per IRS Publication 936. On a loan of several million dollars the deduction reaches only a small share of the interest; your CPA can state the after-tax cost of a given loan.
Where the program fits
The program is candid about where it belongs in this market. It suits a household buying a home of $4M or more, holding $5M or more in assets beyond the home and earning $500,000 or more, that intends to keep the home well past the mortgage's first fifteen years — a common profile among seasonal residents planning to hand the house to the next generation — and would rather commit capital up front than borrow the maximum. It is a poor fit for a buyer who needs full liquidity elsewhere or expects to sell within a few years.
On a $4,500,000 home at the program's standard terms, the household commits half the price at closing: $900,000 as the down payment and $1,350,000 as the contribution to the financial instrument. The mortgage — made by a third-party lender, because the program is not a lender, bank, insurance company or government program — is $3,600,000, interest only for the first fifteen years and principal and interest for the fifteen after. The rate is an assumption for illustration, not a rate offer: at an assumed 6.5 percent the interest-only payment is $19,500 a month, and in years 16 to 30 the scheduled payment is $31,360 a month. The financial instrument's projected payout is sized to that payment. The payout is a projection, not a guarantee; the mortgage still runs its full thirty years; designs are tested with no growth credited in their first two years, and the instrument's values are reviewed against the plan every year.
The trade is deliberate: $2,250,000 committed at closing, in exchange for fifteen years of the lower payment and a designed source for the later ones. The team behind the program has done hundreds of transactions. Whether the structure beats paying cash or taking a plain jumbo depends on the household, which is what the comparison and the calculator are for. The eligibility page states the criteria in full.
