The Quick Read: A DSCR lender counts the rent you can legally collect today, not the rent a unit might fetch on the open market. On an occupied rent-controlled San Francisco unit, the in-place lease rent usually sets the number. Market rent matters mainly when a unit is vacant and can be re-let at a new price. Annual increases on sitting tenants are small, so a gap between in-place and market rent closes slowly.
- The lender tests documented rent against the full monthly payment, not the rent you hope to reach.
- A sitting tenant’s rent is capped. A new tenancy can usually be priced at market.
- Lease rent above the legal rent does not count.
- Banked increases and future turnover are rights, not income, until the rent is actually raised and documented.
- Clearing the coverage test does not mean the property cash flows.
Key Terms Defined
DSCR (debt service coverage ratio): The monthly rent a lender counts divided by the full monthly payment on the property.
PITIA: Principal, interest, taxes, insurance, and any association dues, which together make up the payment the rent is divided by.
In-place rent: The rent the current tenant actually pays under a lease, which in a controlled unit cannot exceed the legal rent.
Market rent: The rent an appraiser opines the unit would earn if it were leased today to a new tenant.
Rent schedule: The appraiser’s report of rent for each unit, which includes a note on whether rent control applies.
Vacancy decontrol: The rule that lets a landlord set the starting rent for a new tenancy, even though a sitting tenant stays capped.
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As of Oct 29, 2026 · General Freddie Mac market benchmark, not a Lendmire loan offer. Rent, nightly rate, occupancy, taxes, and insurance are editable estimates. Short-term rental figures are estimates only and vary significantly by season, property type, management approach, and local short-term-rental rules — confirm local regulations before relying on them. Qualifying income for short-term rentals varies by program — some use appraisal market rent, others use documented STR history or projections — and is confirmed in underwriting. Not a Loan Estimate, approval, or commitment to lend. Program availability and eligibility are subject to lender guidelines, credit approval, property review, and underwriting.
What Is the Lender Actually Testing?
The lender is testing whether the property’s rent covers the property’s payment. That is the whole ratio. Divide the rent figure the file supports by PITIA and read the result.
DSCR loans are designed for non-owner-occupied investment properties. Because they are business-purpose investor loans, they are reviewed differently from a standard owner-occupied mortgage. The loan is reviewed primarily on property-level rental income covering the payment, subject to lender guidelines. Credit, assets, entity documents, and the property itself still get reviewed.
Where does 1.00 fit? Across our wholesale network, 1.00 is where many select programs start. Stronger ratios open better pricing and leverage. A separate select-lender path takes coverage below 1.00, with leverage and terms adjusted.
Passing the test is not the same as positive cash flow. The ratio ignores repairs, vacancy, management, utilities, and capital spending. In a rent-controlled building those costs can keep rising while rent is capped. Treat the ratio as the lender’s gate, not your profit forecast.
If you want the full mechanics, our complete DSCR loans guide walks through the whole process.
Which Rent Does the Lender Count?
On most files, the lender counts a documented rent, never the investor’s own estimate. When a lease and an appraisal disagree, programs commonly use the lower, more conservative figure. Each program writes its own version of this rule, so the details vary by lender.
Rent control makes that rule bite harder. A market rent the owner cannot legally collect from the sitting tenant is not income. So for an occupied controlled unit, the practical answer is the in-place lease rent, provided it sits at or below the legal rent. A lease written above the legal rent does not lift the ratio.
Here is how the read works, step by step:
1. Classify the unit. Is it in a multi-unit building first occupied before the late-1970s cutoff? Is it a house or condo? Is it newer construction?
2. Check the tenancy start date. For houses and condos, the Rent Board’s partial exemption turns on whether the tenancy began before or after a cutoff in the mid-1990s.
3. Collect the in-place evidence. That means leases, a rent roll for multi-unit buildings, and proof of payment where the program asks for it.
4. Let the appraiser report market rent. The appraisal flags rent control and reports the rent schedule.
5. Pick the rent figure. The lender uses a documented, supportable number, generally the more conservative of lease and appraisal.
6. Divide by PITIA. Sum the unit rents and divide by the full payment on the building.
Verify the exact building-age and tenancy cutoff dates on the Rent Board’s site before you rely on them. They decide which of your units are controlled at all.
How the Appraiser Reads a Controlled Unit
The appraiser is the lender’s second set of eyes on rent. On a one-unit investment property, the appraiser fills out a single-family rent schedule (Form 1007). On a two- to four-unit property, the form is the small-income-property report (Form 1025). The two-to-four-unit form asks directly whether rent control applies to each unit. It also has the appraiser reconcile market rents into an opinion for each unit.
An appraiser’s practice note on rent-controlled apartment appraisals describes starting the income picture from in-place rents plus the allowable increase. It applies market-rent adjustments to vacant units. That is one appraiser’s approach, so treat it as a sensible pattern rather than a rulebook.
The appraisal also sets value. Rent control can therefore touch both sides of the file: the rent in the ratio and the value in the leverage test. A modest appraised value limits the loan on a purchase, where most files land at 75%-80% LTV on an investment property, subject to lender guidelines.
Why the Gap Closes So Slowly
San Francisco’s Rent Board sets the yearly allowable increase for controlled units. The current allowable increase is 1.6%, and the prior period was 1.4%. The cap is tied to 60% of the Bay Area CPI-U increase, and the ordinance text says the annual increase can never exceed seven percent.
Those numbers are small. A unit paying well under market will not catch up through annual increases. Think of a 1.6% bump as a rounding adjustment to coverage, not a plan for lifting it. The cap also applies per tenancy. The Rent Ordinance does not regulate the initial rent for a new tenancy, so a unit that turns over can be priced at market. A tenant who stays is capped. A tenant who leaves resets the rent.
The Scenario Table
This is how the rent source changes by situation. Treatment varies by program, so read it as the common pattern across the network.
| Situation | Rent the file usually counts | What changes it |
|---|---|---|
| Occupied controlled unit | In-place lease rent | Legal rent proof |
| Lease above legal rent | Legal rent, not the lease | Rent history |
| Vacant unit, new tenancy | Appraiser’s market rent | Signed lease or appraisal |
| Month-to-month tenant | Documented current rent | Payment proof |
| Mixed building | Each unit on its own source | Unit-by-unit rent roll |
| Additional unit or in-law | Only if legal and documented | Permit status |
The last row deserves a flag. An unpermitted unit may add little or nothing to the rent figure. It can also raise a property eligibility question, because the building may count as having more units than the record shows.
Worked Example: Three Units, Two Rent Bases
Run the numbers on a modeled small building, with every input treated as an assumption, not market data. Picture three units. Two are occupied by long-tenured tenants paying controlled rent. One is vacant and can be re-let at market.
Count it the way a lender would. The two controlled units go in at in-place rent. The vacant unit goes in at the appraiser’s market rent. Assume that combined figure lands near 0.95x coverage against the full building payment.
Now count all three at market, the way a pro forma would. The same building reads near 1.25x. Same bricks, same payment, very different answers. The investor who priced the purchase off the pro forma discovers the gap at underwriting.
What are the options on a 0.95x file? A few come to mind:
- Put more cash down. A larger down payment lowers the payment and can lift coverage. It never erases leverage caps, credit floors, or reserve rules.
- Ask whether a select-lender sub-1.00 path fits. That path is available through select lenders in the network, with leverage and terms adjusted.
- Re-price the purchase, so the ratio works on the rent that can actually be collected.
Whether any of these works depends on lender guidelines, credit approval, and the property review. The strongest files clear two tests: enough equity and enough rental coverage.
DSCR vs. conventional financing
There are two common ways to finance an investment property, and they qualify you differently — here’s how investors weigh them.
Why investors choose it
- Qualifies on the property’s rental income — no personal tax returns, W-2s, or pay stubs needed to document income.
- No personal debt-to-income ceiling to clear, so existing mortgages and obligations don’t cap your borrowing the same way.
- Can be closed in an LLC, keeping the property inside a business entity.
- Built for scaling — not held to the limit on number of financed properties that conventional financing applies.
- Underwriting centers on the deal: generally qualifies when the rent covers the payment, a 1.00x coverage ratio being a common baseline (confirmed in underwriting).
- Designed specifically for investment property, including long-term and, where the program allows, short-term rentals.
Where it’s strong
- Often the lowest ongoing financing cost for a buyer who fully qualifies on personal income — a fit for a first property or a cost-first purchase.
Trade-offs for investors
- Requires full personal income documentation and must fit within a debt-to-income limit — salary, existing debts, and other mortgages all count.
- Typically held in your personal name rather than a business entity.
- Caps how many financed properties you can carry, which can become a ceiling as a portfolio grows.
- Evaluates you as a borrower as much as the property, which usually means more paperwork.
How investors usually choose: a first or single property often optimizes for the lowest financing cost; portfolio builders often optimize for leverage, vesting in an LLC, and scaling past conventional caps. The right answer depends on your goals, the property, and current guidelines — both paths run through select lenders in Lendmire’s wholesale network, with eligibility and terms confirmed in underwriting.
Where the General Rule Breaks
Rent control is not universal in San Francisco. Coverage turns on the building, the unit, and the tenancy. These are the edge cases that trip investors.
Houses and condos. Single-family homes and condos are generally exempt from rent increase limits, but only if the tenancy began after the cutoff the Rent Board lists. A house with a pre-cutoff tenancy is still fully controlled. A post-cutoff tenancy makes market-rent underwriting more defensible.
The exceptions to the exemption. The Rent Board lists several traps. A house with a legal in-law unit counts as a two-unit building and is not exempt. An illegal in-law unit does the same, unless both units are rented together as a single tenancy. A house with another residential structure on the same lot is not exempt. The exemption is also lost where a serious health, safety, or code citation went unabated for six months or longer before the last vacancy.
Exempt does not mean unprotected. Exempt units still fall under the ordinance for other purposes, including just-cause eviction rules. A lender will not assume you can remove a tenant to re-let at market.
Subtenants and original occupants. When the last original occupant leaves, the landlord can sometimes raise rent on remaining subtenants. A subtenant who lived there before the cutoff may be protected. The local ordinance and the state law can use different tests for this. That is a title and tenancy diligence question, and no ratio math fixes it.
Banked increases. Owners can bank unused allowable increases and impose them later. That is a legal right, not current rent. It does not lift the ratio until you actually raise the rent and the lease reflects it.
State-level limits. A unit exempt from local control may still fall under a state rent cap. Confirm which one applies before you underwrite an increase.
Five or more units. Buildings with five or more units are generally reviewed under commercial-style underwriting. That follows different rules than the one-to-four-unit DSCR programs described here.
Turnover Resets Rent, but Lenders Do Not Count on It
Turnover is the investor’s hope and the lender’s blind spot. The lender reads the building as it stands. A tenant who might leave next year does not raise the rent figure today.
This is a genuine judgment call for the buyer. Some investors value a controlled building for its stable, long-tenured tenants and accept thin coverage in exchange. Others want the reset upside and plan around vacancies. Both are reasonable. The financing file only rewards the first approach with a clean ratio, because a tenant who stays is the tenant the lender can document.
Plan for the in-between case too. If a unit turns over after closing, the new market rent shows up in the next refinance, not in the original file.
What to Bring to the File
A clean rent-controlled file proves the legal rent, not just the lease. Gather these before you apply:
- Current leases for every occupied unit.
- A unit-by-unit rent roll showing tenancy start dates and current rent.
- Rent payment history, such as ledgers or bank records.
- Any rent increase notices, including the dates they took effect.
- Evidence of the legal rent history, so the lease and the legal figure can be compared.
- Permit records for any additional unit you want counted.
- A signed lease at market for any vacant unit that has been re-let.
Mismatches stall files. A lease that shows a number different from the legal rent history, or a rent roll that disagrees with the appraiser’s schedule, usually triggers questions. Resolve them before the lender asks.
What the Decision Looks Like in Practice
Before you apply, model the deal conservatively. Count each controlled unit at in-place rent. Count each vacant unit at a market figure you can support. Add nothing for banked increases or expected turnover. Then check coverage.
Next, check the rest of the file against typical network ranges, all subject to lender guidelines:
- Leverage. On an investment-property purchase, most files land at 75%-80% LTV. A cash-out refinance on a standard rental tops out around 75% LTV across most of the network.
- Credit. A 620 floor exists in parts of the network. Most programs want around 660, and 700+ unlocks the strongest leverage tiers.
- Reserves. These are commonly around 6 months of PITIA, stepping up to about 9 months on loans above $1,500,000. They vary by lender, leverage, loan size, and transaction type.
- Loan size. Standard programs run up to $3,000,000, and smaller balances route through select lenders in the network.
To see how rent gets read when a different local factor pulls on the number, take a look at Lendmire’s piece How a DSCR Lender Reads Rent Near San Diego Military Bases.
Frequently Asked Questions
Does market rent ever count on a rent-controlled unit?
Yes, when the unit is vacant and can be re-let at a new price. The Rent Ordinance leaves initial rent on a new tenancy unregulated, so an appraiser’s market rent or a signed market lease can support the figure. An occupied controlled unit does not get that treatment, because the sitting tenant’s rent is capped.
What if the lease is higher than the legal rent?
The lender will generally count the legal rent. A rent above the legal ceiling is not collectable, so the extra amount does not lift coverage. Bring rent history that shows the legal figure, so the file explains the difference instead of just exposing it.
Can banked rent increases help my ratio?
No, not until you impose the increase and document it. A banked increase is a legal right to raise rent later. It is not income today, so the lender has nothing to count.
Does a long-term tenant help or hurt the file?
Both, depending on your priority. A long-term tenant makes the rent easy to document and the income stable. The same tenant usually pays well below market, which depresses coverage and may limit the loan amount. Whether that trade works depends on your leverage and how much cash you bring.
Can I buy a rent-controlled building if coverage is below 1.00?
Possibly. A sub-1.00 path is available through select lenders in the network, with leverage and terms adjusted. Approval depends on lender guidelines, credit, reserves, and property review, so it is an option to test, not an assumption.
Next Step
If you are buying or refinancing a rental property and want to see how the numbers work, Lendmire can help you compare DSCR loan options based on the property income, credit profile, leverage, and investor goals. Lendmire is a mortgage broker arranging DSCR investor loans through select lenders in its wholesale network across 41 markets, including Washington, D.C. Nothing here is a commitment to lend.
San Francisco rewards the investor who underwrites the rent the tenant actually pays and treats the turnover upside as a bonus, not a premise.
About Lendmire
Lendmire is a DSCR-focused mortgage brokerage, NMLS# 2371349, placing investor loans across 41 markets, including Washington, D.C. DSCR eligibility is generally reviewed by the lender around a property’s rental income rather than personal income documentation, which fits LLC-held rentals, self-employed investors, and portfolios scaling past conventional financed-property limits. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
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Informational only. Not a Loan Estimate, approval, or commitment to lend. Program availability and eligibility are subject to lender guidelines, credit approval, property review, and underwriting.
References
1. Stein Valuation: rent-controlled apartment building appraisals
2. SF Rent Board: annual allowable rent increase announcement
3. SF Board of Supervisors Ordinance 171-15
This article is part of Lendmire’s DSCR loan program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: Can a DSCR Lender Waive the Exit Fee After a Liquidity Event? · How a DSCR Lender Reads a Brand-New LLC Owned by a New Landlord · How Much a DSCR Lender Lends on a Greenville SC Rental
Guides: DSCR Loans in San Francisco, CA · DSCR Loans in California
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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Legal disclosures. Lendmire (NMLS# 2371349) is a state-licensed mortgage brokerage that arranges financing through wholesale lender relationships. Lendmire is not a direct lender, depository institution, or registered financial advisor. The discussion above is general informational content about real estate financing — it is not financial, legal, or tax advice, and readers should consult licensed professionals for guidance on their individual circumstances. Loan inquiries are subject to lender underwriting; this article does not represent a commitment to lend. Loan terms, rates, and qualification standards vary by borrower, property, and state, and are subject to change at any time. Equal Housing Opportunity. NMLS Consumer Access: nmlsconsumeraccess.org.