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Commercial Real Estate FinancingFinancing for the office building you run your business from, or the one you own as an investment
Office is the most scrutinized commercial asset class today. We shop owner-occupied and investor office deals across many lenders so the structure fits your tenants, your leases, and your plans, not whatever one bank happens to offer.
North Bay Capital arranges office building loans for both owner-users (often SBA 504 or 7(a) eligible) and investors (bank, CMBS, or DSCR). We match the deal to the right lender based on occupancy, tenant credit, lease terms, and building class, and we are honest about today's conservative office underwriting.
Programs we broker
The options under office loans — and the right fit for each.
Owner-Occupied Office Building Loan — SBA 504
Buy your office with 10% down and a fixed, below-market second from the CDC.
If your business will occupy at least 51% of the office building you're buying or building, the SBA 504 is usually the cheapest money on the street. It's a two-loan structure: a bank or credit union does a first mortgage at roughly 50% of project cost, a Certified Development Company funds a second at about 40% with a long-term fixed rate set by the bond market, and you put down around 10%.
I broker 504s for Bay Area professionals all the time — dentists buying a Santa Rosa medical suite, law firms taking over their Petaluma space, accounting practices in Marin. The CDC second is what makes it special: a 25-year fixed in a world where most commercial loans balloon at five or ten.
- Dental or medical practice buying its suite
- Professional services firm exiting a lease
- Owner building a new headquarters
- Tenant improvements rolled into purchase
Owner-Occupied Office Building Loan — SBA 7(a)
One loan, up to 90% financing, more flexible than 504 when the deal is messy.
The SBA 7(a) is the Swiss Army knife of small-business lending. For an owner-occupied office purchase, it can go up to roughly 90% loan-to-cost in a single note — no CDC second to coordinate, no separate closings. The current SBA cap is $5 million, and the rate is typically a variable tied to prime, though some lenders will fix it.
I reach for 7(a) when the borrower wants to roll working capital, equipment, or business acquisition into the same loan, or when the 504 timeline doesn't work. It's also the right tool when the building isn't 51%-occupied yet but will be after the deal.
- Buying the office plus funding tenant improvements
- Business acquisition with real estate included
- Owners who want one closing instead of two
- Practices with limited cash but strong cash flow
Investor Office Loan — Bank / Portfolio
Relationship financing on stabilized office buildings held in your name or LLC.
When you're buying or refinancing a leased-up office building as an investment, a bank or credit union portfolio loan is often the best home for the deal. These lenders keep the loan on their own books, which means they can underwrite the property's real story — actual leases, actual operating expenses, the sponsor's broader balance sheet — instead of squeezing it into a securitized box.
I keep relationships with regional banks and credit unions across the Bay Area and Northern California that still actively lend on office. Expect a 5- or 10-year fixed, a 25- or 30-year amortization, recourse in most cases, and DSCR underwriting in the 1.20x to 1.35x range depending on tenant quality.
- Refinancing a maturing office loan
- Acquiring a leased suburban office
- Cash-out for capital improvements
- Local sponsor with banking relationship
Investor Office Loan — CMBS (Conduit)
Non-recourse, long-term fixed financing for larger stabilized office assets.
CMBS — commercial mortgage-backed securities, often called conduit loans — is where larger office deals tend to land when the borrower wants non-recourse and a long fixed rate. The loan gets pooled with others and sold to bond investors, so the underwriting is rigid and the closing is heavier than a bank loan, but the trade-offs can be worth it.
I use CMBS for stabilized Class A or B office buildings, generally above $3–5 million, where the rent roll is clean, the tenants have term, and the sponsor wants to walk away from personal liability. Just know the prepayment is locked down hard — defeasance or yield maintenance — so plan the hold accordingly.
- Stabilized multi-tenant office, $5M and up
- Sponsors who require non-recourse
- Refinancing into a long-term fixed rate
- Out-of-area sponsors holding for cash flow
Investor Office Loan — DSCR
Qualify on the building's cash flow, not your tax returns.
DSCR — debt service coverage ratio — lending is the workhorse for investors who don't want to document personal income. The lender underwrites the property: if the net operating income covers the proposed debt service by a comfortable margin, the loan works. No tax returns, no global cash flow analysis, no 4506-T.
On office buildings this is most common in the small-balance space, roughly $500K to $5M, and works best when there are real leases in place with creditworthy tenants. Rates run a bit higher than bank financing, but the speed and the document-light process make it the right call for a lot of investors.
- Self-employed investor with complex returns
- Holding title in an LLC
- Quick acquisition of a leased office
- Cash-out refi without income verification
Medical Office Building (MOB) Loan
Specialized financing for clinics, dental suites, surgery centers, and physician-leased buildings.
Medical office gets treated differently — and usually better — than generic office. Healthcare tenants tend to sign long leases, invest heavily in their build-outs, and rarely move. Lenders know this, so MOB loans often come with tighter pricing, higher leverage, and more flexible structures than the office market broadly.
I work on both owner-user MOBs (the doctor or dentist buying the building they practice in) and investor MOBs (a multi-tenant medical building leased to independent providers or affiliated with a hospital system). Owner-user usually points to SBA 504 or 7(a); investor usually points to bank, life company, or DSCR depending on size.
- Physician group buying its clinic building
- Dental practice acquiring a suite condo
- Investor purchasing a multi-tenant MOB
- Surgery center refinance
Office Repositioning Bridge Loan
Short-term capital to buy, reposition, and re-tenant an office before permanent financing.
Post-pandemic, a lot of office buildings need work — physical updates, new leasing, sometimes partial conversion — before they qualify for conventional financing. A bridge loan gives you the runway to do that work. These are short-term (typically 12–36 months), interest-only, and underwritten more on the business plan and exit than on current cash flow.
I broker office bridge loans through debt funds and private lenders who actually understand the asset class. Pricing is higher than bank debt, but the loan is built around your renovation budget, leasing timeline, and stabilized take-out — not the trailing twelve months of a half-empty building.
- Buying a partially vacant office at a discount
- Funding a renovation and re-leasing plan
- Lease-up before permanent financing
- Discounted payoff or note purchase
Calculators for this loan
What people ask before they apply
What is the difference between owner-occupied and investor office building loans?
It comes down to who uses the space. If your own business occupies most of the building (generally 51% or more), you are an owner-user and can usually access SBA 504 or 7(a) financing, which means lower down payments and attractive fixed terms. If you lease the building to other companies, you are an investor and the loan is underwritten on the rent roll, tenant credit, and lease terms through a bank, CMBS, or DSCR lender. The path you qualify for changes the down payment, the rate, and the documentation, so we confirm which bucket you fall into early.
How much do I need to put down on an office building?
For an owner-occupied purchase using SBA 504, the borrower contribution is often around 10%, which is one of the program's biggest advantages. Investor office loans usually require more equity, commonly 25-40% down, because lenders cap loan-to-value in the 60-75% range and go lower on weaker or partly vacant buildings. The exact figure depends on the building class, occupancy, and tenant quality. We can model a few scenarios so you see the real cash-to-close before you write an offer.
Why is office harder to finance now than it used to be?
Since 2020, hybrid and remote work pushed up office vacancy in many markets, and lenders responded by tightening terms. Where strong office deals once reached 75% loan-to-value, many lenders now cap at 65-70% for all but the best buildings, and they want higher debt-service coverage. Capital still flows to Class A, well-leased properties; older Class B and C buildings, or anything with near-term lease rollover, require a stronger story and the right lender. As a broker, our job is to find the lenders still active in your specific submarket and asset type.
What is DSCR and why does it matter for office loans?
DSCR, or debt-service coverage ratio, measures whether the building's net operating income comfortably covers the loan payment. A 1.25x DSCR means the property earns 25% more income than the debt costs. Most lenders treat 1.25x as the minimum for a stabilized office building and ask for 1.30x or higher when the asset or market is riskier. If your numbers come in tight, we can adjust loan amount, term, or structure to make the coverage work.
Can I use an SBA loan to buy a medical office building?
Yes, if your practice will occupy at least 51% of the building, a medical or dental practice can use SBA 504 or 7(a) financing to buy its own office. Healthcare real estate often finances well because the tenant improvements make practices unlikely to relocate. If you are an investor buying a leased medical building rather than occupying it, SBA is off the table, but bank and CMBS lenders generally view medical office favorably compared to traditional office. We finance both situations and steer you to a lender who actually understands healthcare space.
How do tenant credit and lease terms affect my office loan?
For investor office, the tenants effectively co-sign the loan in the lender's mind. Strong, creditworthy tenants on long leases support higher leverage and better pricing; short remaining lease term or a single tenant about to expire makes lenders nervous and can shrink the loan. Lenders look closely at the weighted-average lease term and prefer staggered expirations so the building does not empty out all at once. Bringing a clean rent roll and copies of the leases to the table speeds everything up.
What does building class (A, B, or C) mean for financing?
Class is shorthand for quality, age, location, and amenities. Class A buildings are newer, well-located, and command top rents, so they finance most easily and at the best leverage. Class B is solid but older or less amenitized, and Class C is older or in weaker locations. None of these are unfinanceable, but B and C office deals today usually require more equity, a clearer business plan, and a lender comfortable with the submarket. We position the deal honestly so it lands with a lender likely to actually close it.
Can I refinance an office building loan that is coming due?
Yes, and refinancing a maturing commercial loan is one of the most common reasons owners call us. Many older office loans were written with balloon payments due after five to ten years, and today's tighter terms can make the renewal more challenging than the original. The earlier you start, ideally six months or more before maturity, the more options we can line up. We review your current loan, occupancy, and income, then shop banks, CMBS, and DSCR lenders to find the best available replacement, including cash-out for improvements where the numbers support it.
Jesse Gonzalez, President & Founder
NMLS #278103 · CA DRE #01855372 · Last reviewed June 24, 2026
Talk through your office deal with someone who will actually pick up the phone
Whether you are an owner-user looking at SBA 504, a practice buying its own building, or an investor refinancing leased office space, the right structure depends on details no online quote captures. Call Jesse Gonzalez at North Bay Capital at 707-595-5393, or email jesse@northbaycap.com, and we will give you a straight read on what is financeable and how to get there. Commercial lending is available broadly, beyond California.