How to Make an Offer on an Assumable Mortgage Home in Colorado — Step-by-Step Guide
Making an offer on an assumable mortgage home is a little different from a standard purchase — and if you don't know the difference, you could lose the deal or the rate.
Here's why it matters: a $450,000 home with an assumable FHA loan at 3.0% runs about $1,897 per month in principal and interest. Finance that same home fresh today at 6.875% and you're looking at $2,956/month. That's $1,059/month you could save by doing this right. The process is worth learning.
This guide walks you through exactly how to make an offer on an assumable mortgage home in Colorado — from the first showing to closing day.
Step 1: Verify the Loan Is Actually Assumable
Not every listing advertised as "assumable" is worth assuming. Before you get emotionally invested, confirm a few things:
- Loan type: Only FHA and VA loans are assumable. Conventional loans are not. A listing with a 2021 FHA loan is almost always assumable. A conventional loan is not, no matter what the rate was.
- Remaining balance: Ask the listing agent for the approximate remaining balance. The gap between the balance and purchase price is what you need to cover at closing — in cash or via a second loan.
- Rate: A 2.5% loan on a $500,000 home is a great deal. A 5.8% assumable loan probably isn't worth the extra complexity.
On assumableguy.com, active Colorado listings are pre-filtered for FHA and VA loans with verified assumable status.
Step 2: Understand the Equity Gap Before You Offer
This is where most buyers stumble. The equity gap is the difference between the loan balance and the purchase price.
Example: Home listed at $425,000. Remaining FHA balance: $350,000. Equity gap: $75,000. You need $75,000 at closing — either from savings, a gift, or a second loan (some lenders offer second mortgages specifically for this purpose).
Before you write an offer, know your gap number and know how you'll cover it. If the gap is $200,000 and you only have $60,000 in savings, the math doesn't work regardless of how good the rate is.
Some sellers are open to negotiating on price, which effectively shrinks the gap. Others aren't. Have this conversation with your agent before the offer stage.
Step 3: Write the Offer Correctly
An assumable mortgage offer has most of the same components as a standard Colorado Real Estate Contract — purchase price, earnest money, inspection contingency, financing contingency. The key differences:
Financing contingency language. Instead of a standard mortgage approval contingency, you need an assumption approval contingency. This protects you if the servicer doesn't approve the assumption. Work with an agent who has written these before — the wrong language leaves you exposed.
Extended closing timeline. Assumption approvals take time. Servicers move slowly. Budget 45-60 days instead of 30. Build that into your offer dates so you're not scrambling or asking for extensions.
Seller's VA entitlement (VA loans only). If you're a non-veteran assuming a VA loan, the seller's VA entitlement stays encumbered until the loan is paid off. Some veteran sellers won't agree to this because it limits their future VA borrowing. Know this going in — it affects negotiations.
Step 4: Get Pre-Qualified for the Assumption
After the offer is accepted, the servicer (the company that currently holds the loan) has to formally approve you as the new borrower. This is separate from getting a regular mortgage pre-approval — you need to go through the servicer's own process.
Your agent or a lender who handles assumptions can walk you through this. You'll submit income docs, credit info, and the executed purchase contract to the servicer. They'll review and either approve, deny, or ask for more documentation.
Timeline: plan for 2-4 weeks for servicer review after submission. Some servicers are faster, some are slower. Your agent should know which servicers are currently responsive.
Step 5: Close the Deal
Once the servicer approves the assumption, you move toward closing like a normal transaction — except the title company and closing agent need to be familiar with assumption paperwork. Not all are. Ask before you hire them.
At closing:
- You pay the equity gap (from savings or a second loan)
- You sign the assumption agreement with the servicer
- The seller is released from the original loan (or partially, in some VA cases)
- You get the keys and the rate
Total cost to close is typically comparable to a standard purchase — origination fees are usually lower because there's no new loan origination, but the servicer may charge an assumption fee (usually $500-$1,500 for FHA loans).
Work With Someone Who's Done This Before
The difference between an agent who knows assumable mortgages and one who's learning on your deal is about 30 days and a lot of stress.
Ryan Thomson at Keller Williams has closed assumable deals across Colorado's Front Range. He can walk you through the equity gap math, connect you with assumption-friendly lenders, and write an offer that actually protects you.
Browse assumable listings in Colorado or reach out to talk through your situation. The best deals move fast — being prepared matters.
Ryan Thomson | Keller Williams | Equal Housing Opportunity