Rocket Mortgage set its 2027 conforming loan limit at $845,000 on September 10, and that is a real number for anyone shopping a loan between $832,750 and $845,000 in Scottsdale or Phoenix right now. It is not official. The Federal Housing Finance Agency has not announced 2027 limits, and it usually does that in late November. Here is what the early number changes, what it does not, and how to shop around it.

What the $845,000 number is, and what it is not

It is one lender's early limit, a 1.47% bump over the 2026 limit of $832,750. The conforming limit is the largest one-unit loan that Fannie Mae and Freddie Mac can buy from lenders. FHFA sets it every year from its own house price index, and the law ties the baseline to how much home prices rose. Rocket looked at that math, guessed where FHFA would land, and moved first.

The word that matters is guessed. If FHFA publishes a different number in November, lenders that jumped early are holding the difference. I have seen this pattern before. The early number is usually close, but close is not the same as confirmed, and you should never build a purchase contract on an unconfirmed limit without a backup plan. We covered this year's official figures in our post on 2026 conventional loan limits in Arizona.

Where Maricopa County sits

Maricopa County uses the national baseline. For 2026 that is $832,750 on a one-unit home. Higher limits exist only in designated high-cost counties, and the Valley is not one of them, so the same ceiling applies in Scottsdale, Paradise Valley, Chandler and Gilbert as in Buckeye. You can check any county on the FHFA conforming loan limit page.

That matters in Arizona more than in most states. A lot of Scottsdale and north Phoenix purchases land in the low to mid $1 million range, which puts a 20% down loan right on the edge of the limit. A home priced at $1,040,000 with 20% down produces a loan of $832,000. Add $10,000 to the price and you are a jumbo borrower.

What a few thousand dollars over the line actually costs

Jumbo is not a penalty box, but the rules change. Reserve requirements go up, credit standards tighten, and pricing can sit above conforming. The gap moves week to week, so treat the numbers below as a planning example, not a quote. Monthly payments are principal and interest at 7.03%, the Freddie Mac 30-year average on September 24.

Now the illustrative part. If a jumbo loan priced a quarter point above conforming, an $840,000 loan at 7.28% would cost about $5,747 a month, roughly $142 more than at 7.03%, or about $1,700 a year. Some weeks the spread is zero. Some weeks it is wider. That is why the label on your loan matters, and why you should ask for both quotes.

A loan $7,250 over the limit can cost you more than a loan $100,000 under it.

Who this helps, and who it does not

It helps a specific buyer: someone whose loan lands between $832,750 and $845,000 and whose closing date sits after their lender adopts the higher limit. At 20% down, the early limit stretches your conforming purchase price from about $1,040,900 to about $1,056,300. That is about $15,300 more house without crossing into jumbo. Our guide to jumbo loans in Scottsdale explains what changes when you cross the line.

Three questions to ask any lender who quotes you the $845,000 limit:

• Has your investor adopted the higher limit in writing? A loan officer's verbal yes does not fund your loan.
• What happens if FHFA lands lower? Ask whether the loan converts to jumbo, whether the rate changes, and who pays for it.
• Can I get a jumbo quote on the same day? Sometimes the jumbo rate beats the conforming rate on a high-balance loan. You will not know unless you see both.

The people this does not help are buyers well under the limit, cash buyers, and anyone financing with FHA or VA. Those programs follow different rules. HUD sets FHA limits by county, and VA loans have no set cap for borrowers with full entitlement. Our post on FHA loan limits in Arizona covers that side.

Run your own numbers

How to shop a loan near the limit

Start by moving the number you control. Your down payment is the lever. If your loan sits $8,000 over the 2026 limit, adding $8,000 to your down payment makes the loan conforming today, with no bet on November. Buyers who plan ahead often do that and keep the early limit as a bonus, not a requirement. Our guide on how much down payment you need in Arizona walks through the trade.

Then compare the loans, not the labels. A conforming loan with a 3.5% or 5% down payment triggers mortgage insurance if you put down less than 20%. A jumbo with 20% down may not. Which one costs less depends on your credit score, your reserves and how long you hold the home. A broker can ask many wholesale lenders for both structures on the same day, which is the main reason the programs we offer look different from one client to the next.

Timing is the other lever. A purchase that closes in October or November closes before the official announcement. A purchase that closes in January closes after it. If you are writing offers now with a long escrow, keep both scenarios in the file. Our process page shows where we lock the loan structure so you are not redoing paperwork in the middle of escrow.

The Consumer Financial Protection Bureau has a plain overview of mortgage loan options, including how loan size changes your options. And if you are still deciding what to buy, the Arizona Luxury Property Search lets you filter Scottsdale and Metro Phoenix listings by price so you can see how many homes fall on either side of the limit.

What it means for Metro Phoenix right now

Rates are the bigger story this month. Freddie Mac put the 30-year average at 7.03% on September 24, the first reading above 7% since January 2025. A limit increase does not lower your rate. It changes which pricing bucket your loan falls into, and for a buyer near the line that bucket can be worth more than a rate tweak. If you already own and think about refinancing, the same logic runs in reverse, and our post on jumbo to conforming refinance in Arizona shows how a shrinking balance opens that door.

Not sure which side of the line you land on? Visit pillarmortgagegroup.com, book a call, or fill in the form below. I will run your real numbers.

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