The Quick Read: A DSCR cash-out refinance does not finance construction. It refinances the property as it exists today, so the appraisal values the building as-is and the coverage test uses only the rent that is in place now. Most investors fund the work first, then refinance once the space is finished, permitted, and rented.
- Value and rent are both measured on the property as it stands, so an unbuilt addition or ADU adds nothing to either number.
- Cash-out on an investment property tops out around 75% LTV across most of the network, with about 6 months of ownership expected.
- Coverage starts at 1.00 on select programs, and the new, larger balance raises the payment you are measured against.
- Reserves commonly run around 6 months of PITIA, stepping up to about 9 months on loans above $1,500,000.
- Proceeds can pay for the build, but the lender will not credit the future unit’s rent or value.
Investors often ask this the wrong way around. They want to know whether the money can come first and the rent can follow. The mechanics say otherwise. This guide walks through how underwriting treats an addition or ADU, the sequences that work, the places where the usual rule bends, and how to decide.
DSCR Cash-Out Calculator
Run the cash-out numbers in your market
Rate source: Freddie Mac 30-yr average via FRED® — Federal Reserve Bank of St. Louis · effective Oct 29, 2026
Prefilled with starting assumptions — enter your property’s value, balance, taxes, and insurance for a more accurate picture.
Program parameters update from Lendmire’s centralized guideline source. Taxes and insurance are editable estimates.
As of Oct 29, 2026 · General Freddie Mac market benchmark, not a Lendmire loan offer. Property value, balance, taxes, and insurance are editable estimates. Maximum loan-to-value varies by lender, program, property type, and seasoning. 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 Does a DSCR Cash-Out Refinance Actually Do?
A DSCR cash-out refinance replaces your current loan with a larger one and hands you the difference after the payoff and costs. It qualifies primarily on property-level rental income covering the payment, subject to lender guidelines. Proceeds from a business-purpose loan on an investment property can generally be used for any purpose, including construction.
The coverage ratio is monthly rent divided by the full monthly obligation: principal, interest, taxes, insurance, and any HOA dues. Clearing 1.00 means rent covers that payment. It does not mean the property cash flows. Repairs, vacancy, management, utilities, and capital spending all sit outside the calculation.
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. Anyone new to the product can start with the complete DSCR loans guide.
Why a Planned Addition or ADU Doesn’t Count Yet
Lenders in the network underwrite what exists. The appraiser values the property in its current condition, and the rent is the rent today. A set of plans, a permit application, or a contractor bid does not change either figure.
This is where the idea of “borrow, then build, then qualify on the new rent” breaks. The loan size is the lower of two limits. One limit comes from value, through the LTV cap. The other comes from rent, through the coverage requirement. Neither limit moves for construction that has not happened.
Renovation and rehab loans work differently, because some of them credit after-repair value. A cash-out refinance does not. If you want the build financed against the finished product, you are shopping a different category of loan.
The Step-by-Step Sequence Underwriting Follows
Here is how a typical file moves when the goal is to pull equity after an addition or ADU is built.
1. Fund the build from other capital. Cash, an equity line, a construction or renovation loan, or short-term bridge money are the usual sources. Weigh the carrying cost of that money against what the refinance will save.
2. Finish and permit the work. The unit needs final sign-off before its rent is reviewable. As a contrast point, Freddie Mac’s ADU fact sheet states that rental income from an illegal ADU may not be used to qualify on agency loans. DSCR programs set their own rules, but the same principle shows up in the network: unpermitted space is a problem.
3. Put a tenant in place. A signed lease is the best evidence of rent. On most programs the credited rent is the lower of the lease and the appraiser’s market-rent opinion.
4. Order the appraisal. One report does two jobs. It sets value, which drives LTV, and it sets market rent, which drives coverage.
5. Run coverage on the new payment. A cash-out raises the balance, which raises the payment, which lowers the ratio. The added rent from the new space helps the numerator. The added loan pushes the denominator the other way.
6. Underwriting review. The lender looks at credit, reserves, title, entity documents, and any prepayment penalty on the loan being paid off.
7. Closing. The new loan pays off the old one first. Proceeds are what remains after payoff and costs.
Seasoning matters too. Most programs in the network expect about 6 months of ownership before sizing a cash-out on appraised value, measured from title recording. Cash buyers and recent rehab purchases can follow different paths, depending on the program.
The Requirements Checklist, and Why Lenders Ask
These ranges reflect select wholesale-network guidelines. They are typical, not guaranteed, and every file is underwritten individually.
| Requirement | Typical range | Why the lender asks |
|---|---|---|
| Max LTV, cash-out | Around 75% | Limits risk on a larger balance |
| Seasoning | About 6 months | Shows the owner holds the asset |
| Coverage | 1.00 on select programs; stronger ratios help | Rent must carry the payment |
| Credit | 620 floor; most want about 660; 700+ for top tiers | Predicts repayment behavior |
| Reserves | Commonly about 6 months PITIA; about 9 above $1,500,000 | Cushion if rent stops |
| Loan size | Up to $3,000,000 on standard programs | Program boundaries |
Two clarifications keep this table honest. Coverage below 1.00 is available through select lenders in the network, with leverage and terms adjusted. That is a separate path from the 1.00 programs, not a lower floor on the same program. Loans above $2,500,000 generally stay with 30-year fixed structures.
Property type matters as well. Manufactured homes, log homes, and barndominiums are not offered in the network’s DSCR programs, so an addition to one of those is a non-starter.
A larger down payment, or in a refinance a lower leverage, can lower the payment and lift the ratio. It never erases the leverage cap, credit floor, reserve rule, or property eligibility. The strongest files clear both tests: enough equity and enough rental coverage.
Addition vs. ADU: How Each Gets Underwritten
An addition and an ADU can look similar on a construction budget and very different in underwriting. The difference comes down to what the rent schedule looks like afterward.
| Factor | Addition (more space in same unit) | ADU (separate unit) |
|---|---|---|
| What it adds | Bedrooms or square footage | A second rentable space |
| Rent effect | May lift the one unit’s market rent | Adds a second rent stream |
| Appraisal forms | Rent schedule for a one-unit property | May need per-unit rents |
| Classification risk | Low | One unit with an ADU, or two units |
The appraisal paperwork follows the classification. Fannie Mae’s Selling Guide names Form 1007, the single-family comparable rent schedule, for a one-unit investment property, and Form 1025 for two- to four-unit properties. DSCR files borrow those forms, though the rules around them belong to each program. Fannie Mae’s Form 1025 asks the appraiser to reconcile indicated rents into a market-rent opinion for each unit, which matters when an ADU is treated as a second unit.
A lender may treat a house with an ADU as one unit with an accessory space or as a two-unit property. That choice changes the form, the rent method, and sometimes the comparable sales the appraiser needs. Ask early how your program classifies it.
Additions deserve a note of their own. An addition that adds a bedroom raises rent on one unit, but only if the market pays more for the larger layout. The appraiser decides that, not the contractor’s invoice.
When Does the New Unit’s Rent Count?
Use a plain decision rule. Rent from new space generally counts when it is complete, permitted, leased, and supported by the appraisal. Miss any one of those and the lender falls back on existing rent or declines to credit the new space.
- Planned: counts for nothing.
- Built but unpermitted: generally cannot be used, and may create bigger problems.
- Built, permitted, vacant: the appraiser’s market-rent opinion is the only number available.
- Built, permitted, leased: the lower of lease and appraised market rent is typical.
A lease above market does not raise your ratio. Most programs credit the lower figure. Program terms govern, so treat this as the typical pattern rather than a promise.
What Changes for a Short-Term-Rental ADU?
Plenty of investors plan an ADU as a guest house or Airbnb unit. That changes the underwriting. Form 1007 is built for long-term monthly rent, and HousingWire argues that using it for short-term income can produce artificially low coverage ratios.
Short-term-rental programs in the network follow their own rules. Purchase leverage reaches 75%, and cash-out on short-term-rental collateral sits at 70%, while standard long-term rentals reach 75% on cash-out. Expect a 640+ score and about 12 months of hosting history. The coverage floor is 1.10 on purchases and 1.00 on refinances. A brand-new ADU has no hosting history, which is a real obstacle. Short-term rental rules can vary by city, county, HOA, and property type, so investors should confirm local rules before relying on projected rental income.
Sequencing: Build First, or Refinance First?
Two sequences exist, and they carry very different risk.
Build first, refinance after. This is the cleaner path. You fund the work from other capital, lease the space, and refinance against a property that now has higher rent and a value the appraiser can support. The cost is the carrying expense of the bridge money during construction and lease-up.
Refinance first, build after. Here the cash-out proceeds pay for the work. The existing rent has to carry the new, larger payment while the project produces no income. This works when the property already covers comfortably at a bigger balance. It fails when the file clears 1.00 only barely, because there is no cushion for a construction overrun.
If the property is reviewed on its current rent, refinancing first can make sense. If it only qualifies once the new space is rented, you are asking a loan to count income that does not exist. That sends you back to build first.
A Worked Example With Ratios, Not Dollars
Consider an investor holding a single-family rental with a modest balance, owned well past the 6-month seasoning mark, and renting at a coverage ratio around 1.35x on the current loan. They plan to add an ADU.
Run the cash-out at 75% LTV on the as-is appraised value. The larger balance pulls coverage down, perhaps into the low 1.1x range, because the numerator did not change while the payment did. Coverage still clears 1.00, so the file can work on existing rent alone, though with less cushion and subject to reserves of about 6 months of PITIA. Final terms depend on the lender’s guidelines, the property type, and the borrower’s complete credit picture.
Now compare the build-first path. The ADU is finished, permitted, and leased. The appraiser supports a higher market-rent opinion and a value that may be higher, depending on comps and underwriter review. The cash-out balance is larger, but rent is too. Coverage may land back near 1.2x or better. A lower appraisal or lower rent opinion than expected can erase that gain, so model the downside before committing.
The point of the example is the direction of travel. A cash-out raises the payment immediately. The new rent helps only after it exists.
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 Bends
Several edge cases change the answer.
- Cash buyers and bridge or hard-money payoffs. Depending on the program, these may be sized on the lower of cost or value. Treat that as program-specific and confirm before relying on it.
- Paying off an equity line. A refinance that pays off an existing line may be treated differently than a pure cash-out, depending on how much cash comes back.
- Prepayment penalties. If the loan being paid off carries one, refinancing out of it can be costly. This also affects a second refinance after the build.
- Vacant property. With no rent, there is nothing to measure. The appraiser’s market-rent opinion becomes the only coverage input.
- Owner-occupied homes. DSCR loans are for investment properties. A home you live in has to convert to a rental before it fits.
Alternatives Worth Comparing
DSCR cash-out is not the only way to pay for construction. A renovation loan that credits after-repair value can fund the build against its finished value. A conventional route depends on personal income and debt ratios, which suits some borrowers and shuts out others. Each product has a different qualifying basis.
| Option | Qualifying basis | Best fit |
|---|---|---|
| Build-phase capital, then DSCR refinance | Property rent and value after completion | Investors who can carry the build |
| Renovation loan | After-repair value | Funding the build against finished value |
| Conventional financing | Personal income and DTI | Borrowers with strong documented income |
| DSCR cash-out first | Existing rent and as-is value | Properties already covering comfortably |
Common Mistakes to Avoid
1. Assuming plans or permits will lift the appraisal. They will not.
2. Treating a passing ratio as positive cash flow. Vacancy, repairs, and capital costs sit outside the number.
3. Counting on above-market lease rent to raise the ratio.
4. Skipping a stress test on a lower appraisal and a lower rent opinion.
5. Forgetting the reserves requirement after construction drains cash.
6. Overlooking a prepayment penalty on the loan being paid off.
7. Treating tax questions as settled. Tax treatment varies; consult a qualified professional.
Key Terms Defined
DSCR: the debt service coverage ratio, which compares a property’s monthly rent to its full monthly obligation.
PITIA: principal, interest, taxes, insurance, and any association dues, which together form the payment the rent must cover.
LTV: loan-to-value, the loan balance as a share of the appraised value.
Seasoning: the period of ownership a program expects before it sizes a cash-out on appraised value.
Form 1007: the appraiser’s single-family comparable rent schedule, used to estimate market rent on a one-unit investment property.
Form 1025: the appraisal form for two- to four-unit properties, with a rent schedule for each unit.
ADU: an accessory dwelling unit, a separate living space on the same lot or within the same structure.
Frequently Asked Questions
Can I use a cash-out refinance to build an ADU?
Yes, in the sense that proceeds can pay for the work, but the loan is sized on the property as it exists. Value and rent are measured before the ADU is built. If the existing rent covers the larger payment on its own, the file can work. If it needs the new unit’s rent to qualify, build first.
Can ADU rent count toward DSCR?
Only when the unit is complete, permitted, and documented in a form the program accepts, usually through a lease and an appraiser’s market-rent opinion. Most programs credit the lower of lease and market rent. Planned or projected rent generally does not count.
What LTV and seasoning should I expect?
Cash-out on an investment property tops out around 75% LTV across most of the network, with about 6 months of ownership expected. Short-term-rental collateral is lower, at 70% on cash-out. Eligibility depends on lender guidelines, credit, and property review.
What credit score and reserves do I need?
A 620 floor exists in parts of the network, most programs want about 660, and 700+ opens the strongest leverage tiers. Reserves commonly run around 6 months of PITIA, stepping up to about 9 months above $1,500,000. They vary by lender, leverage, and loan size.
Does a passing coverage ratio mean the project will cash flow?
No. The ratio compares rent to the full monthly obligation only. Vacancy, repairs, management, utilities, and capital costs are outside it, so run your own operating numbers before committing.
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. Reach the team at 828-256-2183, or request a quote.
For the mechanics of pulling equity out of a rental property, see Lendmire’s guide to cash-out refinance on an investment property.
For current guidelines and terms, see Lendmire’s DSCR loan programs page.
About Lendmire
Lendmire (NMLS# 2371349) is a DSCR-focused mortgage broker that helps arrange investor financing across 41 markets, including Washington, D.C., through wholesale and investor-lending channels. DSCR eligibility is generally reviewed by the lender around the property’s rental income rather than personal income documentation, subject to lender guidelines — which works for self-employed investors, LLC operators, and portfolios above four financed properties. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
Get Started
Ready to find the right loan for you?
See your offer in seconds. No credit pull, no obligation.
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
3. HousingWire: Short-Term Rentals Are Breaking the Appraisal Playbook
This article is part of Lendmire’s investment property cash-out refinance program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: How to Maximize the Cash You Take Out on a DSCR Refinance · Can a DSCR Cash-Out Refinance Clear a First and Second Mortgage? · DSCR Cash-Out Refinance vs HELOC Before the Exit Fee Period Ends
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
- Mortgage Loan Originator · NMLS# 1129696 · Verify on NMLS Consumer Access
- North Carolina Real Estate Broker · License# 343312 · Verify on NCREC
- North Carolina Insurance Producer · License# 19053198 · Property, Casualty, Life, Health · Verify on NAIC SBS
- Lendmire LLC · Firm NMLS# 2371349 · Verify firm licensure
Disclosures. The information presented in this article is general market commentary, not financial, legal, or tax advice. Lendmire is a mortgage brokerage (NMLS# 2371349) — not a direct lender or depository institution — and loan placement is subject to lender underwriting. Nothing in this content represents a commitment to lend. Loan terms, pricing, and program availability vary based on borrower qualifications, property characteristics, and state of subject property, and are subject to change at any time. Lendmire complies with Equal Housing Opportunity requirements. Consumer access: nmlsconsumeraccess.org.