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Scaling a Colorado Rental Portfolio: Past 10 Doors, and the Landlord Rules

Program and regulatory figures verified July 24, 2026. Details change; confirm your scenario with us.

By Mike Certo, Cornerstone First Mortgage · NMLS #260555 ·

Every Colorado portfolio hits the same walls: the conventional property-count cap, reserves that climb with it, and a landlord-law regime that got materially stricter in 2024. Each has a clean answer, and all of them affect your reserve math.

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How many financed rental properties can I have?

Ten, conventionally. Fannie Mae's B2-2-03 allows up to 10 financed properties per borrower when the new loan is on a second home or investment property (DU-underwritten). The "you can only have four mortgages" claim you'll still hear describes policy that ended in 2009. What climbs as you grow is the reserve requirement, measured against the aggregate unpaid balance of your other financed properties: 2% with 1–4 financed, 4% with 5–6, and 6% with 7–10. Files at 7+ want clean credit and organized documentation. Past ten (or well before it, once the reserve math gets heavy), DSCR takes over: no agency property-count cap, each property qualifying on its own ratio. Our usual sequencing for Colorado investors is conventional while it's cheapest and your returns cooperate, DSCR from there. The comparison is in the DSCR guide, and the entity structure most portfolios adopt is in the LLC guide.

The 2–4 unit lane and loan limits

Duplexes through fourplexes are still residential financing, one loan, multiple rent checks, and Colorado's older neighborhoods (Denver's Capitol Hill, Pueblo, the Springs' Old North End) have real inventory. Plan on 25% down as the common floor on investment 2–4 unit, whether conventional or DSCR. The 2026 conforming limit is $832,750 across most of Colorado, but the high-cost counties run higher: the six Denver-metro counties at $862,500, Boulder at $879,750, Summit at $1,092,500, Pitkin and Garfield around $1,209,750, and Eagle at $1,249,125. On the DSCR side, all units' rent counts toward the ratio, which is why a fourplex often clears 1.0 where a same-priced single-family doesn't.

Foreign-national buyers of Colorado rentals

Colorado resort and Front Range property draws international capital, and financing exists for it: DSCR-style foreign-national programs require no U.S. credit score or Social Security number on many structures. Expect 25–30% down, reserves on the deeper end (6–12 months), and foreign bank assets documented rather than moved. An ITIN is sometimes needed for tax administration, not for qualifying; your CPA handles that side. The property still qualifies on its rent-to-payment ratio like any other DSCR file, and title can vest in a U.S. entity: the usual structure pairs a Colorado LLC with a foreign member.

Colorado landlord rules to price into your model

Colorado tightened its landlord-tenant law sharply in 2024, and these rules shape your operating costs and re-tenanting timeline, not your loan eligibility, but a serious portfolio model has to carry them. Three that matter most:

  • Cause to evict: HB24-1098 (signed April 19, 2024) ended at-will non-renewal. You now need a valid cause (tenant default, nuisance, or damage) or one of a defined list of no-fault grounds (sale, owner move-in, demolition, or substantial repairs), plus a 90-day notice, including for no-fault. Build the longer timeline into your turnover assumptions.
  • Deposit and pet caps: security deposits are capped at 2 months' rent, pet deposits at $300, and pet rent at $35 a month or 1% of rent. That caps the cash you can hold against a unit at move-in.
  • Repair response: SB24-094 (effective May 3, 2024) requires starting remedial action within 72 hours of a habitability complaint (24 hours for dangerous conditions) and keeping related records for 3 years. Factor a responsive maintenance arrangement into your expense model.

None of these change whether your loan qualifies; they change what the property costs to run. Your attorney and property manager own compliance; we make sure the reserve and expense assumptions in your financing reflect them.

No pressure, no obligation, and no salesy follow-up: a 20-minute call with our team, real numbers, and a straight answer on whether the deal pencils.

Frequently asked questions

How many financed properties can I have with conventional loans?

Up to 10 financed properties per borrower under Fannie Mae B2-2-03 for second-home and investment purchases. Reserve requirements climb with the count: 2% of the aggregate balance of your other financed properties at 1–4, 4% at 5–6, and 6% at 7–10. Beyond 10, DSCR takes over with no agency property-count cap.

Can a foreign national buy Colorado investment property with financing?

Yes. Foreign-national DSCR programs on many structures require no U.S. credit score or Social Security number; plan on 25–30% down and 6–12 months of reserves, with foreign assets documented. An ITIN may be needed for taxes rather than qualification. Title typically vests in a Colorado LLC, often with a foreign member.

Can I evict a tenant in Colorado without a reason?

No, not since April 2024. HB24-1098 requires a valid cause (tenant default, nuisance, or damage) or one of a defined list of no-fault grounds, such as sale, owner move-in, demolition, or substantial repairs, plus a 90-day notice, including for no-fault non-renewals. That longer timeline belongs in your turnover and vacancy assumptions.

How much can I charge for a security deposit or pet fee in Colorado?

Security deposits are capped at 2 months' rent. Pet deposits at $300, and pet rent at $35 a month or 1% of monthly rent, whichever applies. These caps limit the cash you can hold against a unit at move-in, which is worth reflecting in your reserve planning, though they don't affect loan qualification.

What are my repair obligations as a Colorado landlord?

Under SB24-094 (effective May 3, 2024), you must begin remedial action within 72 hours of a habitability complaint, or within 24 hours for dangerous conditions, and keep related records for 3 years. Budget a responsive maintenance arrangement into your operating model; it's a compliance cost, not a financing factor.


Mike Certo · NMLS #260555 · Cornerstone First Mortgage NMLS #173855 · Equal Housing Lender. Educational content, not a loan commitment and not legal or tax advice. City and county STR rules, tax figures, and filing fees change; verify current requirements with the city or county, the HOA or metro district, your CPA, or a Colorado real estate attorney before you buy. Loans are subject to buyer and property qualification.