OFFICE TYPES
What Type of Office Property Are You Financing?
Lender appetite varies by office class, location, tenant quality, and lease structure. Here's how lenders categorize office assets.
Class A Office
Premium, institutional-gradeNewly built or recently renovated. Top locations, modern amenities, national or credit tenants. Typically draws the widest lender interest, including CMBS and life insurance companies.
Class B Office
Mid-tier, value-add potentialOlder but functional buildings in good locations. Mix of local and regional tenants. May need cosmetic updates. Often bought as value-add. Bank and DSCR loans are common.
Class C Office
Older, below-market rentsAging infrastructure, secondary locations, smaller local tenants. Lower rents; cash flow depends on occupancy and capital needs. Bridge or private lending may be needed for acquisition, with takeout refi after stabilization.
FINANCING OPTIONS
Loan Options for Office Buildings
Four main loan structures cover office purchases, refinances, and cash-out scenarios.
Conventional Bank Loan
Full-doc, relationship pricingFull documentation required. Best for owner-occupants and investors with strong financials and established tenants.
SBA 504 / 7(a)
Owner-occupied offices, from 10% downOften the first option to compare for professionals (law firms, accounting, financial services) buying their own office building.
DSCR Loan
No personal income docsQualification based on property cash flow. No tax returns or W-2s. Ideal for portfolio investors.
CMBS / Conduit
Large stabilized assets, non-recourseNon-recourse available for Class A/B stabilized assets. Yield maintenance prepayment. Institutional underwriting.
Typical ranges, updated September 2026. Your terms depend on the property, the borrower and the lender.
KEY METRICS
What Lenders Evaluate for Office Loans
Office underwriting focuses on tenant quality, lease terms, and property cash flow.
WORKED EXAMPLE
Example: How Reserves and Lease Rollover Shrink an Office Loan
Office lenders do not size the loan on the NOI in the seller’s package. They take out reserves for the tenant improvements and leasing commissions (TI/LC) it will cost to re-lease space, and they look hard at leases that expire during the loan. Assumptions for illustration only: a 30,000-square-foot multi-tenant building valued at $7,500,000 with $600,000 of NOI before reserves, a TI/LC reserve of $1.50 and a replacement reserve of $0.25 per square foot a year, a 7.0% rate on a 25-year amortization, a 1.25x minimum DSCR and a 70% LTV cap — computed with our max loan calculator.
| Seller’s NOI | Lender’s underwritten NOI | |
|---|---|---|
| Net operating income | $600,000 | $547,500 (after $52,500 of reserves) |
| Largest loan | $5,250,000 (70% LTV binds) | $5,164,000 (1.25x DSCR binds) |
The bigger issue is rollover. If a tenant renting 9,000 square feet has a lease ending in year two, many lenders hold back part of the loan in an upfront rollover reserve — for example, $450,000 if they budget $40 of TI and $10 of commissions per square foot to re-lease that space — released when the tenant renews or a replacement signs. That money is borrowed but not in your hands at closing. A renewal signed before you apply is often worth more than a lower rate.
Typical ranges, updated September 2026. Your terms depend on the property, the borrower and the lender.
THE PROCESS
How Office Building Financing Works
Share Your Deal
Property address, purchase price or estimated value, rent roll, lease terms, and operating expenses. We assess lender fit before you commit.
Submit to BestLoanUSA
Complete our single application. No hard credit pull. We evaluate your deal across conventional, SBA, DSCR, and CMBS options.
Advisor Review
Dedicated advisor reviews your office property’s tenant mix, lease structure, and cash flow to recommend the strongest loan structure and lender matches.
Lender Matching
We submit to lenders experienced in office financing. You compare the term sheets that come back — rates, LTV, prepayment terms, and recourse.
Underwriting & Appraisal
Lender orders an office-specific appraisal. You provide rent roll, leases, operating statements, tax returns, and entity documents.
Close & Fund
Conventional: 30–45 days. SBA: 30–90 days. CMBS: 45–90 days. Title transfers and you begin collecting rents under the new structure.
Free tools
Run the numbers
The same metrics a lender checks — free, instant, no signup. Each result links straight into an application.
- Cap Rate Calculator Calculate capitalization rate, estimate property value from NOI, or find the NOI needed to hit your target cap rate. The essential CRE investment metric.
- Rent Per Square Foot Calculator Convert between total rent and per-square-foot rates. Compare lease rates across properties and calculate total annual occupancy cost for commercial spaces.
- DSCR Calculator Calculate your Debt Service Coverage Ratio instantly. See if your property qualifies for CRE financing and which loan programs are available to you.
FAQ
Frequently Asked Questions
What types of office buildings qualify for commercial financing?
Most office buildings qualify — from small single-tenant professional offices to large multi-tenant Class A towers. Lenders evaluate based on property condition, tenant quality, lease terms, and location. Single-tenant buildings with long-term leases from credit tenants tend to get stronger terms.
Can I buy an office building for my own business?
Yes. If your business will occupy at least 51% of an existing building (60% for new construction), you can apply for owner-occupied financing including SBA 504 (from 10% down, fixed rate on the SBA portion) and SBA 7(a). This is common for law firms, medical practices, financial advisors, and professional service businesses.
What are TI/LC reserves on an office loan?
Money the lender sets aside — monthly with the payment, upfront at closing, or both — to pay the tenant improvements and leasing commissions it will take to re-lease space when leases end. Lenders also deduct a reserve from NOI when sizing the loan. In our example, $1.75 per square foot of reserves on a 30,000-square-foot building cuts underwritten NOI from $600,000 to $547,500 and the loan from $5,250,000 to $5,164,000.
How do lenders evaluate multi-tenant office buildings?
Lenders look at the weighted average lease term (WALT), tenant creditworthiness, occupancy rate, and lease rollover schedule. Buildings with staggered lease expirations and credit tenants get the best underwriting treatment.
What if my office building has high vacancy?
Buildings below stabilized occupancy (85–90%+) may not qualify for conventional permanent financing. Bridge loans or value-add lending can fund the acquisition and lease-up period. Once stabilized, you can refinance into a permanent loan, typically at a lower rate than the bridge loan.
Are office buildings harder to finance post-COVID?
Some lenders have tightened office underwriting due to remote work trends. Well-located buildings with stable leases, medical offices, and owner-occupied professional buildings can still find lenders. DSCR loans and portfolio lenders are often more flexible than large banks for office assets.
What is the minimum loan amount for office building financing?
BestLoanUSA arranges commercial real estate loans from $250K to $50M+. Minimums vary by lender: CMBS loans usually need a larger balance, and SBA loans also cover smaller office purchases.
Related on BestLoanUSA
Financing options
All loans →- CRE Refinancing A commercial real estate refinance replaces your existing mortgage with a new loan — to lower the rate, replace a maturing balloon, move from floating to fixed, or take cash out. To refinance, check your current loan’s maturity and prepayment penalty, get the property appraised, show that its net operating income covers the new payment at the lender’s minimum DSCR, compare term sheets and close — the new lender pays off the old loan, usually in 30–60 days. Bank, SBA 504, CMBS and DSCR lenders price refinances at about 6.25–8.75%. RefinancingDSCR
- Retail A retail property loan finances storefronts, strip centers, shopping centers and single-tenant net-lease buildings. Investors use bank, DSCR or CMBS loans, sized on the leases and tenant quality; a business that occupies its storefront can use SBA 504 with as little as 10% down. DSCRCMBS
- Medical Office A medical office loan finances a building used for healthcare — a physician practice, outpatient clinic or surgery center. Practitioners who occupy it can use SBA 504 or 7(a) with up to 90% financing; investors buying a leased medical building use bank or DSCR loans. Office buildingsDSCR
- Hard Money Takeout A hard money takeout refinance replaces a short-term hard money or bridge loan with a long-term loan once the property is renovated, leased or stabilized. Bank, SBA and DSCR lenders typically lend up to 75% of value at about 6.25–8.75%, compared with 9–13% for hard money. RefinancingDSCR
Guides & articles
All articles →- Medical Office Building Loans: Financing a Practice Facility How healthcare professionals finance a medical office building: SBA 504 and 7(a), bank loans, down payment, and when owning beats leasing. Office buildingsLoan-to-value
- The 2026 CRE Maturity Wall: Refinancing a Loan That Comes Due $875 billion of commercial mortgages are scheduled to mature in 2026. How to size the gap when a low-rate loan refinances at today’s rates, and how to close it. RefinancingDSCR
- Cash-Out Refinance on Commercial Property: Accessing Equity How a cash-out refinance on commercial property works: how much equity you can take out, what lenders require, the costs, and when it makes sense. RefinancingDSCR
Glossary
All terms →More calculators
All calculators →- Debt Yield Calculator Calculate Debt Yield (NOI ÷ Loan Amount) — the metric CMBS and institutional lenders prioritize over DSCR and LTV. Find your maximum loan amount based on target debt yield. DSCRCMBS
- NOI Calculator Calculate your property's Net Operating Income with a detailed income and expense breakdown. NOI drives your DSCR, cap rate, and property valuation. NOIDSCR
- Defeasance Calculator Estimate the total cost of defeasing your CMBS or conduit commercial loan. See the Treasury portfolio cost, transaction fees, and how it compares to yield maintenance. CMBSPrepayment penalty