What Turning Your Home Into a Rental Means in Colorado
Most of the landlords I work with in Broomfield County did not set out to become investors. They outgrew a house, found the next one, ran the numbers on selling, and realized they would rather keep the old place and let a tenant pay the mortgage on it. That is what turning your home into a rental usually looks like in practice, and it is a legitimate and fairly ordinary path.
It is also a path with a few specific moving parts, because the moment you own two homes your lender has to decide how both of them affect your file. The good news is that the rules here are written down and knowable, and most of the surprises come from things people read online rather than from the guidelines themselves.
One term to get out of the way first. Your departure residence is simply the home you are moving out of. Lenders use that phrase constantly and rarely define it, so if you have seen it on a checklist and wondered, that is all it means.
How Your Departure Residence Is Treated on a Broomfield Purchase
When you buy a new home while keeping the old one, the underwriter starts from a straightforward assumption. You will owe two housing payments, so both count against you.
The technical term for a housing payment is PITIA, which stands for principal, interest, taxes, insurance, and any association dues. In Broomfield County that last letter carries real weight, because neighborhoods like Anthem and Broadlands carry association structures that add meaningfully to the monthly figure on both properties.
So the starting point is that your departure residence PITIA and your new PITIA are both in the qualifying math. That is the conservative default, and for plenty of borrowers it works fine on its own. Where it does not, the question becomes whether the rent you expect to collect can offset part of that old payment, which brings us to the documentation.
The Short Version
Both payments count unless you can document rent on the departing home. Documenting that rent is not hard, but it is specific, and it generally has to happen before your new loan closes rather than after. Guidelines vary by lender and program, and eligibility is subject to credit approval and a full loan estimate.
How Future Rent May Count Toward Your Next Colorado Home
This is the part worth getting exactly right, so I am going to cite the source rather than paraphrase a blog. Fannie Mae addresses rental income from a converted principal residence in Selling Guide section B3-3.8-01, Rental Income, with related treatment of other properties you own in B3-6-06.
Under B3-3.8-01, rental income from a converted principal residence may be considered when the lender has a fully executed lease agreement, plus evidence that the terms of the lease have actually gone into effect. That evidence must include at minimum one of the following:
- Two consecutive months of bank statements or electronic transfers showing rental payments, where the lease is already in place and the tenant has been paying.
- Copies of the security deposit and the first full month's rent check, with proof of deposit, where the lease is newly executed and the tenant has not yet built a payment history.
When rent is counted, the lender multiplies the gross monthly rent by 75%. The missing 25% is a built-in cushion for vacancy and maintenance, and I think it is one of the more sensible numbers in the guide. Using a clearly hypothetical figure to show the arithmetic, if the departing home rented for $2,400 a month, the amount considered would be $1,800, not the full $2,400.
There are conditions beyond the paperwork. The guide also looks at your history managing rental property and whether you currently have a housing payment of your own, and lender overlays can add requirements on top of agency policy. So treat the above as the shape of the requirement rather than a promise about your particular file.
The practical takeaway is about sequencing. A signed lease with a deposit collected and deposited before your new loan goes to underwriting is worth far more to your file than a lease you plan to sign next month. If keeping the old house is part of the plan, tell me on day one and I will build the timeline around it.
The Equity Picture When You Keep Your Broomfield Home
Here is where I want to correct something that circulates widely, because I see it repeated in places that should know better.
Current Fannie Mae policy contains no equity threshold for converting a principal residence to a rental. If you have read that you need 30% equity in the departing home before rent can count, that figure comes from a retired guideline and is not the rule in force today. A separate 25% figure that also gets quoted belongs to FHA policy, not Fannie policy, and applying it to a conventional file is simply mixing up two different rulebooks.
That said, equity still matters, just for practical reasons rather than as a documentation gate:
| Equity Question | Why It Matters on a Conversion | Where It Shows Up |
|---|---|---|
| Do I still pay mortgage insurance? | Private mortgage insurance sits inside the departing home's monthly payment, which raises the payment the underwriter counts | Removing PMI on the old loan |
| Can I pull cash out for the new down payment? | Equity in the departing home is one source of down payment funds, though the timing and occupancy status change the options available | Cash-out refinance before the move |
| Does the property carry itself? | A lower balance means a lower payment, which means rent covers more of the carry once you are a landlord | Your ongoing cash flow |
| What if I sell later instead? | Equity is the cushion that gives you the option to change your mind after a year of being a landlord | Your exit flexibility |
If mortgage insurance is still on the departing loan, my guide to removing PMI walks through when it may come off and what that does to the monthly figure. If you are considering pulling equity out before you move, start with my cash-out refinance page, and note that the timing relative to your move matters, since a refinance completed while you still occupy the home is a different transaction than one completed after it becomes a rental. The cash-out refinance on a rental property guide covers that second version, and the broader refinance guides hub has the rest.
Thinking About Keeping the Old House?
Tell me the address you are leaving, the home you are moving toward, and roughly what you think the old place would rent for. I will map out whether rent can help you qualify, what documentation you would need and when, and whether keeping it actually serves you better than selling. No pressure and no obligation.
A Short-Term Rental Reality Check in the North Denver Metro
A good share of the people who ask me about keeping the old house are picturing a nightly rental rather than a tenant on a twelve month lease. I would rather deliver this news before you write an offer than after.
In most of the cities I serve, moving out is exactly what disqualifies the property. Broomfield prohibits the short-term rental of a residence that is not the principal residence of the property owner, and it applies a multi-part residence test to confirm it, including how much of the year you live there, your driver's license, your voter registration, and the mailing address on file with the assessor. Thornton's code says it plainly as well, making it unlawful to operate a short-term rental in a location that is not the licensee's primary residence where the licensee lives more than half the year. Superior requires the operator to be a town resident with the short-term rental as their principal residence, backed by an affidavit under penalty of perjury. Louisville prohibits short-term rental of dwelling units outright outside a narrow window the City Council sets each year, and otherwise requires leases of a month or longer.
The consequence is direct. If you move out of your Broomfield home, you generally cannot turn it into an Airbnb. The rule that made it eligible was the fact that you lived there, and moving out is what removes it.
Arvada is the exception among the six cities I work in, and even there the permit carries caps on how many permits one person may hold, a limit of one per lot, and a ceiling on how many days per year the property may be rented that way. Westminster has its own licensing regime that I confirm with the city directly rather than guess at. If nightly rental is central to your plan, tell me which city the departing home sits in before anything else, because the answer reshapes the whole income model.
None of that makes keeping the house a bad idea. A long-term lease is the ordinary and workable path here, and it is also the income an underwriter can actually document.
The Occupancy Line in a Colorado Rental Conversion
I want to be direct about a boundary, because it is the one place in this topic where the stakes are not financial.
Converting a home you have genuinely lived in into a rental is legitimate. Life changes, families grow, jobs move, and keeping the old house is a normal decision that lenders see every day. Nobody is going to look sideways at you for it.
Buying a home you never intend to occupy while telling the lender it is your primary residence is a different thing entirely. That is occupancy fraud. It is a misrepresentation on a federally related transaction, it carries real legal consequences, and it is not a gray area that gets softer with a good explanation. There is no structuring around it, and I will not help anyone try.
The honest version is easy: if you intend to rent the new property, I underwrite it as an investment purchase from the beginning. The terms are different, and that is the trade. The clean file is the one that lets you sleep.
Where DSCR Fits After Turning a Colorado Home Into a Rental
A DSCR loan, meaning a loan qualified on the debt service coverage ratio between a property's rent and its full monthly housing payment, comes up constantly in this conversation, and it is almost always aimed at the wrong moment.
DSCR financing is for non-owner-occupied property only. It cannot finance a primary residence, and it is not a retroactive fix for the home you already own. Converting your house to a rental does not convert your existing mortgage into anything, and you do not need a new loan on the departing home just because a tenant moved in.
Where DSCR genuinely fits is later. Once the old house is rented and you have a year of being a landlord behind you, a DSCR loan may become one of the ways to add a second rental, qualifying on that property's own rent rather than stacking another payment against your personal income. My guide to DSCR loans in Broomfield covers how the ratio is calculated and what lenders typically ask for, and it is the natural next page if this move is the start of something larger rather than a one-time decision.
Steps for Turning Your Broomfield Home Into a Rental
Order of operations does most of the work here. This is the sequence I walk move-up buyers through.
- Say it out loud early. The plan to keep the old house changes how I structure the new preapproval, and it is much easier to build that in at the start than to retrofit it three weeks before closing.
- Check the city's rental rules for the departing home. Long-term leasing is broadly available. Nightly rental generally is not, once you move out.
- Build an honest carrying cost for the old property. Property taxes under Colorado's current structure, landlord insurance rather than a standard homeowner policy, association dues, and a realistic allowance for vacancy and repairs. My guide to what it costs to own a rental in Broomfield County lays out the full list, and the home affordability page is the owner-occupied counterpart if you are also sizing the new purchase.
- Decide whether rent needs to count. If your income supports both payments without it, the file gets simpler. If it does not, I work backward from the lease and deposit documentation described above.
- Sign the lease and collect the deposit before underwriting, not after. This is the single most common timing mistake on a conversion.
- Move your insurance to a landlord policy at the right moment. Placement belongs with a licensed insurance agent, and the switch matters for coverage, not just for the payment.
- Route the tax and legal questions to the right people. Depreciation, deductions, and how the eventual sale is treated are questions for your CPA. Lease terms and landlord obligations belong with an attorney. I will tell you when you have crossed into their lane.
Everything above stays subject to credit approval and a full loan estimate, and guidelines vary by lender and program. What does not vary is that a conversion planned in advance goes far more smoothly than a conversion discovered mid-file.