Business owners financing a building generally choose from six loan types: commercial construction loans (build from the ground up), SBA 504 loans (buy or build owner-occupied property at long terms), SBA 7(a) and conventional commercial mortgages (purchase or refinance), commercial bridge loans (short-term, close-fast), renovation and tenant-improvement loans (upgrade existing space), and equity-based options like a business HELOC or cash-out refinance (tap value you already own). Which one fits depends on whether you are building versus buying, how long you can wait to close, and whether the property income or your business cash flow is the stronger qualifier. Traditional building loans are slow and heavily documented; when a project needs working capital in days rather than months — a permit deposit, a down-payment gap, or a materials order — owners often bridge the gap with revenue-based financing, which approves on bank deposits and monthly revenue instead of a full construction-loan underwrite.
Key takeaways
- Business owners generally choose among six building-loan types: construction, SBA 504, SBA 7(a)/conventional mortgage, bridge, renovation/TI, and equity-based (HELOC or cash-out refi).
- SBA 504 typically has the lowest owner down payment (around 10%) for owner-occupied property; ground-up construction usually requires the most equity (roughly 20-30%).
- Construction loans release funds in draws tied to inspection milestones, so owners front costs and get reimbursed — a working-capital need in itself.
- Traditional building loans commonly take 30-90+ days to close because lenders underwrite plans, permits, the contractor, an appraisal, and financials.
- Revenue-based financing approves on business bank deposits and monthly revenue, not property or credit alone — funding from about $10,000, FICO 500+ considered, decisions in 24-48 hours.
- Short-term financing (bridge or revenue-based) should always have a defined exit: permanent financing, a sale, project completion, or a revenue cycle you can point to.
- Match repayment to the project's realistic timeline and cash flow; approval and terms are never guaranteed and depend on your full profile.
The six building-loan types, and what each one actually funds
"Building loan" is a loose term that covers several very different products. Matching the loan to the job is the first underwriting decision, because pricing and speed follow the structure.
- Commercial construction loan — funds ground-up construction or major structural work. Money is released in draws tied to inspection milestones, and you typically pay interest only on what has been drawn. Often converts to (or is replaced by) a permanent mortgage at completion.
- SBA 504 loan — for buying, building, or substantially improving owner-occupied commercial real estate. Structured as a bank first-mortgage plus a CDC (SBA-backed) second, with a modest owner down payment. Long amortization and competitive fixed rates make it the workhorse for owner-occupiers who can wait.
- SBA 7(a) / conventional commercial mortgage — general-purpose real-estate purchase or refinance. More flexible on use than 504, sometimes faster, but rates and terms vary by lender and borrower profile.
- Commercial bridge loan — short-term financing (often 6–36 months) to close quickly, cover a value-add period, or hold a property until permanent financing lands. Higher cost, faster close.
- Renovation / tenant-improvement (TI) loan — funds build-out of leased or owned space: HVAC, buildouts, ADA and code work, kitchens, and equipment tied to the space.
- Business HELOC / cash-out refinance — borrows against equity in property you already own to fund a new build or renovation elsewhere.
Everything downstream — rate, term, down payment, and how long you'll wait — is a consequence of which of these six you're in.
How lenders underwrite a building loan
Real-estate lenders underwrite the project and the borrower at the same time. On a construction or purchase loan, expect the file to touch most of the following:
- Loan-to-cost (LTC) and loan-to-value (LTV) — how much of the total project or appraised value the lender will cover. Construction lenders lean on LTC; purchase lenders lean on LTV.
- Owner equity / down payment — your cash in the deal. Ground-up construction usually requires the most; SBA 504 the least among owner-occupied options.
- Debt-service coverage ratio (DSCR) — projected property or business income divided by the new debt payment. Lenders want a cushion, not a break-even.
- Personal credit and guaranty — most small-business real-estate loans require a personal guaranty; strong personal FICO still matters.
- Plans, permits, GC contract, and budget — for construction, the lender underwrites the build itself: fixed-price or GMP contract, contingency line, draw schedule, and a licensed general contractor.
- Appraisal (often "as-completed") — an independent value estimate, on construction usually forecasting value at completion.
That documentation load is exactly why these loans take weeks to months. It also explains why a strong project can still stall on a single gap — a short appraisal, a down-payment shortfall, or a soft-cost the lender won't fund — and why owners keep a fast, flexible capital source on the side.
Example building-loan terms (illustrative, not quotes)
The table below shows how the same $500,000 need looks across different structures. These are for example figures to illustrate trade-offs in speed, cost, and equity — not offers, and actual terms vary by lender, property, and borrower.
| Loan type | Typical use | Term (example) | Owner cash in (example) | Time to fund (example) |
|---|---|---|---|---|
| Commercial construction | Ground-up build | 12–24 mo, draws | 20–30% | 45–90+ days |
| SBA 504 | Buy/build owner-occupied | 10–25 yr | ~10% | 30–90 days |
| SBA 7(a) / conventional | Purchase or refi | 10–25 yr | 10–25% | 30–75 days |
| Commercial bridge | Fast close / value-add | 6–36 mo | 15–35% | 2–4 weeks |
| Renovation / TI | Build-out, upgrades | 3–10 yr | Varies | 2–6 weeks |
| Revenue-based financing | Working-capital gaps in a project | Short, cash-flow based | None (unsecured) | 24–48 hours |
Notice the pattern: the cheaper, longer-term real-estate loans demand more equity and more time; the fast options cost more but move in days. Most building projects use a combination.
Decision framework: which building loan fits your situation
Pick by matching your constraint — speed, cost, equity, or occupancy — to the right structure.
Choose a commercial construction loan when: you're building or doing major structural work, you have a licensed GC and a firm budget, and you can wait 6–12 weeks to close. Avoid when: plans and permits aren't finalized, or you can't fund the required equity and contingency.
Choose SBA 504 when: you'll occupy at least ~51% of the property, you want the lowest down payment and a long fixed term, and timing is measured in weeks or months, not days. Avoid when: the property is investment/rental, or you must close immediately.
Choose a commercial bridge loan when: you need to close fast, win a competitive purchase, or hold a property through a value-add period before permanent financing. Avoid when: you have no clear exit (sale or refinance) to retire the bridge.
Choose a business HELOC or cash-out refi when: you already own property with real equity and want flexible, lower-cost funds for a build elsewhere. Avoid when: your equity is thin or you can't comfortably carry a second lien.
Choose revenue-based financing when: the project is fundamentally sound but you have a working-capital gap the building loan won't cover fast enough — a permit or deposit, a down-payment shortfall, a materials or payroll spike during the build. Avoid when: you need a long-term, low-rate mortgage; this is short-term cash flow, not a real-estate loan.
For the broader menu of non-real-estate options, see our pillar guide on business loan types and how each one is priced and repaid.
When traditional building loans are too slow — and what owners do instead
The most common failure point on a building project isn't approval — it's timing. A construction or SBA file can be strong and still take two to three months, while the deal in front of you has a clock: an earnest-money deadline, a contractor who needs a deposit to hold the schedule, a materials price that expires, or a permit fee due before the bank's first draw releases.
This is where revenue-based financing earns its place in the stack. Instead of underwriting the property, plans, and appraisal, it underwrites your business bank deposits and monthly revenue. Approval leans on cash flow and consistency of deposits, not on a construction budget or an as-completed value. Owners use it to bridge working-capital gaps around a building loan — not to replace the mortgage, but to keep the project moving while the real-estate financing closes.
Through a revenue-based marketplace, typical qualifying looks like: funding from about $10,000 and up, personal FICO 500+ considered, decisions in 24–48 hours, and repayment tied to your revenue cycle rather than a fixed real-estate amortization. Nothing here is guaranteed — offers depend on your deposits, time in business, and overall profile — but the speed and the deposit-based approval are exactly what a mid-project cash crunch calls for.
Costs, risks, and the questions to ask before you sign
Every building loan trades speed against cost and equity against risk. Underwrite your own deal before a lender does.
- Know your all-in cost, not just the rate. Construction and SBA loans carry origination, appraisal, environmental, legal, and CDC/packaging fees. Bridge loans add points. Ask for every line item.
- Budget a contingency. Ground-up projects run over. Lenders expect a contingency line (often 5–10%); if they don't require one, build it yourself.
- Understand the draw schedule. On construction loans you front costs and get reimbursed after inspection — that lag is a working-capital need in itself.
- Have an exit for short-term debt. A bridge or revenue-based advance should have a defined payoff: permanent financing, project completion, or a revenue cycle you can point to.
- Protect cash flow. Match repayment to how the project actually generates cash. Never stack short-term obligations so tightly that a single slow month breaks the schedule.
The right structure is the one your cash flow can service comfortably under a realistic — not best-case — timeline.
Frequently asked questions
What is the difference between a construction loan and a commercial mortgage?
A construction loan funds the building of a property and releases money in draws tied to inspection milestones, usually with interest-only payments on the drawn balance during the build. A commercial mortgage funds the purchase or refinance of an already-standing property with a fixed amortization. Many ground-up projects use a construction loan first, then convert to or refinance into a permanent commercial mortgage at completion.
Which building loan has the lowest down payment for business owners?
Among owner-occupied real-estate options, the SBA 504 loan typically requires the least owner cash — often around 10% — because the SBA-backed second mortgage sits behind the bank's first. Ground-up construction loans usually require the most equity, commonly 20–30% of total project cost. Exact requirements depend on the property type, your profile, and the lender.
How long does it take to get a building loan approved?
Traditional building loans are slow. Construction and SBA loans commonly take 30 to 90-plus days because the lender underwrites plans, permits, the general contractor, an appraisal, and your financials. Bridge and renovation loans can move in a few weeks. When a project has a working-capital gap that can't wait, revenue-based financing can fund in about 24 to 48 hours because it approves on bank deposits rather than a full real-estate underwrite.
Can I get building financing with a low credit score?
Most bank and SBA building loans want strong personal credit and a personal guaranty. If your score is lower, revenue-based financing is often the more realistic path for working-capital needs around a project — many marketplaces consider a FICO of 500 or higher, with the decision weighted toward your business bank deposits and monthly revenue rather than credit alone. It is short-term cash flow, not a substitute for a long-term mortgage, and approval is never guaranteed.
What is a commercial bridge loan used for in a building project?
A bridge loan is short-term financing used to close fast, win a competitive purchase, or hold a property through a renovation or lease-up period before permanent financing is in place. It costs more than a conventional mortgage and should always have a defined exit — a sale, a refinance, or project completion — to pay it off.
How do revenue-based financing repayments work during construction?
Repayment is tied to your business revenue cycle rather than a fixed real-estate amortization, so it flexes with how your business actually generates cash. Owners typically use it to cover working-capital gaps during a build — a deposit, a materials order, payroll, or the reimbursement lag between construction draws — not as the long-term financing for the building itself. Structure it so a single slow month won't break your schedule.
Do I need a general contractor to qualify for a construction loan?
For most commercial construction loans, yes. Lenders underwrite the build itself and generally require a licensed general contractor, a fixed-price or guaranteed-maximum-price contract, a detailed budget with a contingency line, and a draw schedule. Owner-builder arrangements are far harder to finance and are declined by many lenders.
Should I use one loan or combine several for a building project?
Most projects combine structures. A common stack is a long-term real-estate loan (construction, SBA 504, or a commercial mortgage) for the property itself, plus a short-term source — a bridge loan or revenue-based financing — to cover speed-sensitive gaps the primary loan won't fund fast enough. The goal is to match each cost to the financing whose term and speed fit it, without over-leveraging your monthly cash flow.
