The Hidden Costs of Assuming a Mortgage in Colorado — What Buyers Need to Budget For

The headline appeal of an assumable mortgage is obvious. Take over a seller's 2.875% FHA loan on a $425,000 home, and your principal and interest payment comes to about $1,763 per month instead of $2,829 on a new 7.0% conventional loan. That's $1,066 per month in savings.

What the marketing doesn't always tell you clearly is that getting to that payment involves some upfront costs that you need to plan for. None of them are deal-breakers, but walking into an assumption without understanding the full budget picture can create problems partway through closing.

The Equity Gap (Usually the Biggest Number)

The gap between the home's purchase price and the seller's remaining loan balance is the main cost to budget for. This is not a fee. It's equity.

Example: $425,000 purchase price, $295,000 remaining loan balance. Gap = $130,000.

You either need that cash, or you need gap financing (a second mortgage specifically to cover the difference). Gap lenders who work with assumptions charge higher interest rates than conventional mortgages, typically in the 8-10% range, because the second position carries more risk.

The combined payment (assumed first mortgage + gap second mortgage) still often comes out below a single conventional mortgage at today's rates. But you need to run the numbers for each property. If the gap is too large relative to the assumed rate savings, the deal may not pencil.

Gaps tend to be smaller in markets where prices haven't appreciated as dramatically, and larger in the hottest neighborhoods. Colorado Springs and some Westminster neighborhoods often have more manageable gaps than Denver proper.

Assumption Processing Fees

The servicer charges a fee to process the assumption application. For FHA loans, the fee is capped by HUD at $900. In practice, most FHA servicers charge somewhere between $500 and $900.

VA loan assumption fees are slightly different. The VA charges a funding fee for assumptions (0.5% of the loan balance), which applies if neither you nor the seller is exempt. Veterans with service-connected disabilities are typically exempt from the VA funding fee.

These fees are relatively modest compared to origination fees on a new loan, but they're real and worth having in your budget.

Title and Escrow Costs

Standard purchase closing costs still apply with an assumption. You're still paying for:

• Title insurance (lender's and owner's policies)
• Settlement/escrow fees
• Recording fees
• Prorated property taxes and HOA dues (if applicable)

These typically run 1-2% of the purchase price. On a $425,000 home, budget $4,250 to $8,500 for these. They don't change much from a conventional purchase.

Longer Closing Timeline (and What That Costs You)

FHA assumptions take 45 to 90 days for servicer approval. VA assumptions often take 90 to 120 days. A conventional purchase might close in 30 days.

That extended timeline has a cost: you may need to extend a rate lock on gap financing, pay rent for an extra month or two while waiting to close, or negotiate a longer inspection period with the seller. None of these are huge individually, but factor them in.

Some buyers in competitive situations also offer the seller a rent-back arrangement or a slightly higher price to compensate for the longer wait. That's a real cost to consider in your offer math.

Inspection Costs

You still need a full home inspection on an assumption. The fact that you're assuming a loan doesn't change anything about the physical condition of the property. Budget $400-$600 for a standard inspection, plus extra for radon (recommended in Colorado), sewer scope, or structural reviews if the property calls for it.

What a Realistic Budget Looks Like

For a $425,000 Colorado Front Range home with a $295,000 assumable FHA balance at 2.875%:

• Equity gap (cash or financed): $130,000
• FHA assumption processing fee: ~$900
• Title and escrow: ~$5,000-$7,000
• Inspection costs: ~$600-$800
• Miscellaneous (prorations, HOA, etc.): ~$1,000-$2,000

If you finance the full $130,000 gap, you're looking at roughly $7,000-$10,000 in cash to close (excluding the gap itself). If you're paying the gap in cash, your cash requirement is obviously much higher.

This is why assumptions tend to work best for buyers who either have meaningful savings or can access gap financing at a rate that still makes the combined payment pencil favorably.

Is It Still Worth It

At $1,066 per month in savings on the above example, an assumption pays back its transaction costs in under a year. Over a five-year hold, you'd save $63,960. That more than covers the extra fees and complexity.

The buyers who get the most out of assumptions are the ones who take the time to understand the full cost picture upfront, run actual numbers on specific deals, and go in with their eyes open. The savings are real. They just require doing the homework.

For current assumable listings across the Colorado Front Range, browse assumableguy.com. Ryan Thomson works specifically with buyers pursuing FHA and VA assumptions and can walk you through the numbers on any specific property.

Equal Housing Opportunity. Ryan Thomson, Keller Williams.