Ground Figures
Guides · 38 published

Guides written by the person who runs the file.

Every guide says which rule is the agency’s, which is the lender’s, and what underwriting actually does with it. Each one is paired with the calculator or the lender data to run your own numbers.

Qualifying

8 guides
Gift Money for a Down Payment: What Lenders Actually Need to See

Gift funds don’t need to be seasoned. They need a paper trail. Who can give, what the letter says, and how a gift wired at closing still works.

6 min read
What Counts as Debt on a Mortgage Application (and What Doesn’t)

The same $120,000 student loan can count as $0 or $1,200 a month depending on the program. How lenders count debts, and which ones can be excluded.

5 min read
Co-Signing a Mortgage: What You Owe, and How It Follows You

Full liability, your credit report, your DTI — and the 12-month payment exception that takes a co-signed mortgage back out of it.

5 min read
Buying a House on Social Security: The Gross-Up Almost Everyone Gets Wrong

Sources say lenders gross up Social Security by 15%. Fannie’s own worked example says 3.75%. What the guideline does, and what documentation is worth.

5 min read
Lender Overlays: Why Your Loan Was Denied When the Guideline Said Yes

Fannie allows 50% DTI through DU. Your lender may cap it lower and never publish it. How overlays work, where they bite, and what to ask before you apply.

7 min read
Condo Mortgage Rules Changed August 3, 2026: What Buyers Need to Know

Limited Review is gone for buildings over 10 units and the HOA reserve threshold rose to 15%. What it means for your timeline, your offer, and your options if a building fails.

4 min read
DTI Ratio: What Mortgage Lenders Actually Look At

Debt-to-income ratio is the first number underwriters check. Here's how front-end and back-end DTI are calculated, and what actually counts as debt.

3 min read
What Credit Score Do You Need to Buy a House?

Real minimum credit score requirements by loan type — FHA, conventional, VA, USDA, jumbo — and how your score actually moves your rate.

4 min read

Affordability

3 guides

Buying

4 guides

Loan programs

4 guides

Rates & pricing

6 guides

Costs & escrow

5 guides

Paying it down

2 guides

Refinancing

2 guides

Student loans

4 guides