LoanWiseCompare mortgages
Back to Top 10 Lists
Top 10 List•6 min read

10 Best SBA 504 Lenders in Tucson

This ranking identifies the 10 best SBA 504 lenders serving Tucson small businesses, with a focus on CDCs, SBA-preferred banks, and credit unions that support owner-occupied commercial real estate and equipment financing. It is designed for Tucson entrepreneurs and business owners who want long-term fixed-rate financing to acquire, expand, or refinance their business property. Use this list to compare lender specialization, local presence, and program fit before selecting a CDC or bank partner.

LoanWise Editorial Team

Isometric scene of Tucson commercial buildings with small business owners and lenders exchanging loan documents outside an owner-occupied property.

Tucson's commercial real estate market has continued to mature as the city's population grows and its economy diversifies across healthcare, technology, defense, and logistics sectors. For small business owners who want to own rather than lease their operating space, the SBA 504 loan program remains one of the most powerful financing tools available — offering long-term fixed rates, below-market debenture pricing, and leverage structures that allow businesses to preserve working capital while securing permanent facilities.

The SBA 504 program is built on a split-financing model: a bank or credit union provides the senior mortgage (typically 50 percent of the project cost), a Certified Development Company (CDC) funds the SBA debenture (typically 40 percent), and the borrower contributes as little as 10 percent as a down payment. This structure makes it possible for Tucson small businesses to acquire owner-occupied commercial properties — including office buildings, warehouses, retail space, and mixed-use facilities — with significantly less upfront capital than a conventional commercial loan would require.

Because the SBA 504 program requires both a bank partner and a CDC partner to complete the capital stack, choosing the right lenders matters on two levels. Borrowers need to identify a CDC with strong program execution capabilities and, separately, a bank capable of funding and servicing the first-mortgage position. The lenders ranked here include:

  • Dedicated CDCs with Arizona and Tucson-specific experience
  • SBA Preferred Lender banks capable of filling the senior mortgage role
  • Credit unions with meaningful Southern Arizona business lending presence

Rankings were informed by factors including depth of SBA 504 specialization, geographic relevance to Tucson and Southern Arizona, operating history, scope of eligible uses, and the ability to support borrowers through complex owner-occupied transactions. Lenders with the clearest focus on SBA 504 structures and the strongest local or statewide Arizona presence are ranked highest.

#1

Arizona Capital Source

Arizona-focused CDC dedicated to SBA 504 financing

Founded

1979

Total Financed

$1.5+ billion

States Served

1

SBA 504 Terms

10, 20, 25 years

CDC Type

Non-profit

Arizona Capital Source is the clearest Tucson-area SBA 504 specialist in this set, with a long operating history and a business model centered on owner-occupied commercial real estate and equipment financing. It is especially attractive for borrowers seeking a local CDC partner to coordinate the SBA 504 structure with bank first-mortgage lenders.
#2

TMC Financing

Large SBA 504 CDC with Arizona statewide coverage

Founded

1981

States Served

6

Core Program

SBA 504

Eligible Uses

Real estate, equipment

TMC Financing is a well-known SBA 504 lender with a dedicated focus on helping small businesses finance owner-user commercial real estate and major equipment. For Tucson borrowers, its scale and repeated involvement in 504 structures can be helpful on larger or more complex projects.
#3

AmPac Business Capital

Mission-driven CDC with Tucson presence and 504 focus

States Served

3

Tucson Presence

Yes

Core Program

SBA 504

Eligible Uses

CRE, construction, equipment

AmPac Business Capital stands out as a mission-driven SBA 504 lender with a Tucson location and a clear emphasis on commercial real estate, construction, expansion, and equipment projects. Its local access and CDC specialization make it a strong option for Tucson small businesses seeking fixed-rate occupancy financing.
4
#4

CDC Small Business Finance

Mission-based CDC for fixed-rate owner-user real estate

Founded

1978

Core Program

SBA 504

Rate Structure

Fixed rate

Primary Use

Owner-occupied CRE

CDC Small Business Finance is a long-standing SBA 504-oriented lender that fits borrowers seeking long-term fixed-rate financing for owner-occupied commercial property. Its relevance to Arizona and Tucson comes from its CDC role and its emphasis on real estate-heavy small-business projects.
5
#5

B:Side Capital

SBA-certified CDC for expansion, construction, and equipment

Core Program

SBA 504

Eligible Uses

Real estate, construction, equipment

State Relevance

Arizona

CDC Status

SBA-certified

B:Side Capital is an SBA-certified CDC serving Arizona businesses with 504 financing for owner-occupied real estate, growth, and equipment purchases. It is a solid Tucson option for borrowers that want a dedicated CDC rather than a generalist bank.
6
#6

Preferred Lending Partners

Arizona statewide CDC for SBA 504 real estate financing

State Coverage

Arizona statewide

Core Program

SBA 504

Primary Uses

CRE, equipment

Borrower Type

Owner-user businesses

Preferred Lending Partners earns a place for its statewide Arizona SBA 504 focus and relevance to owner-occupied commercial real estate and equipment deals. It is best suited for Tucson borrowers who already have a bank partner and need a dedicated CDC to complete the 504 capital stack.
7
#7

National Bank of Arizona

Statewide SBA bank pairing 504 with broader commercial lending

SBA Status

Preferred Lender

Programs Mentioned

SBA 504, SBA 7(a)

State Coverage

Arizona statewide

Institution Type

Commercial bank

National Bank of Arizona is one of the stronger full-service bank options for Tucson businesses because it combines SBA 504 and 7(a) capabilities with broader commercial banking products. It is especially useful for borrowers who want a bank relationship for deposits, treasury, and conventional commercial lending alongside SBA execution.
8
#8

Arizona Bank & Trust

Arizona commercial bank with SBA and CRE lending

Programs Mentioned

SBA 7(a), SBA 504, SBA Express

Institution Type

Commercial bank

State Relevance

Arizona

Primary Uses

Business, CRE, SBA

Arizona Bank & Trust is relevant for Tucson borrowers who want a bank capable of supporting SBA financing and owner-occupied commercial real estate transactions. While not as 504-centric as a dedicated CDC, it can be a valuable senior-lender partner in SBA 504 structures and a relationship bank for growing companies.
9
#9

Vantage West Credit Union

Southern Arizona credit union for business real estate lending

Region

Southern Arizona

Institution Type

Credit union

Primary Focus

Business lending, owner-user CRE

Tucson Relevance

High

Vantage West Credit Union is a strong local Tucson-area option for business borrowers needing owner-occupied commercial real estate financing and a local relationship lender. It ranks below dedicated CDCs because its SBA 504 specialization is less explicit, but its Southern Arizona footprint adds practical value.
10
#10

Arizona Financial Credit Union

Statewide credit union with CRE and SBA lending

Institution Type

Credit union

Programs Mentioned

Commercial real estate, SBA

State Coverage

Arizona statewide

SBA Status

Preferred Lending Partner

Arizona Financial Credit Union rounds out the list as a statewide lender offering business, commercial real estate, and SBA-related financing relevant to Tucson owner-user borrowers. It is more of a generalist business lender than a pure 504 specialist, but remains useful for borrowers seeking a depository relationship and SBA access.

●Conclusion

Selecting the right SBA 504 lender in Tucson requires understanding that the program is not a single-lender transaction — it is a coordinated structure involving a CDC, a bank, and the SBA itself. Your first decision is whether to approach a dedicated CDC and let them help identify a bank partner, or to start with a bank relationship and bring in a CDC from there. Either path can work, but borrowers who begin with a specialized CDC often benefit from their program expertise and existing lender relationships.

When evaluating the lenders on this list, consider the following factors:

  • Program specialization: Dedicated CDCs will generally have deeper SBA 504 process expertise than generalist banks, which matters on complex or larger transactions.
  • Local presence: Lenders with Tucson or Southern Arizona offices can bring local market knowledge to appraisal reviews, underwriting, and project feasibility assessments.
  • Eligible uses: Confirm that your project — whether an acquisition, refinance, expansion, or ground-up construction — aligns with the lender's core use cases and experience.
  • Rate structure: The SBA debenture portion carries a long-term fixed rate set by the SBA, while the bank's first-mortgage rate may be fixed or variable. Understanding the blended rate on your full capital stack is essential for accurate payment modeling.
  • Bank partnership: If you are working with a CDC, confirm they have established relationships with participating banks that can efficiently fund the senior lien in Tucson transactions.
  • Relationship banking needs: If you want deposits, treasury management, or a line of credit alongside your real estate financing, banks and credit unions on this list may offer more comprehensive relationship value than standalone CDCs.

The SBA 504 program is designed to make commercial property ownership accessible for small businesses, and Tucson's growing economy creates real opportunity for entrepreneurs willing to invest in their facilities. Comparing multiple lenders — particularly across the CDC and bank sides of the transaction — gives you the best chance of securing favorable terms, a smooth closing process, and a long-term financing structure that supports your business's growth.

Keywords:Small Business Loans