SBA Loans for HVAC, Plumbing & Electrical Contractors

Page updated May 2026 — reflects current SBA rules (updated June 2025) and Prime Rate of 6.75%.

SBA 7a

0–10%

Down Payment

$5M-$9M

Max Loan

Fixed or Variable

Rate

25+ yrs

Max Ter,/Amort

SBA 504

10% min

Down Payment

~$20M+

Project Capacity

Fixed or Variable

Rate (1st & 2nd)

20–30+ yrs

Loan Term

Quick Answer: What SBA Programs Are Available for Trades Contractors?

HVAC, plumbing, and electrical contractors can use SBA 7a and 504 loans for business acquisitions (including competitor purchases with no down payment for existing operators), real estate purchase, ground-up construction, refinancing, and partner buyouts. Loan amounts range from $500K to $5M for standard 7a loans, with layered structures available up to approximately $9M. 504 loans are for real estate and equipment only but can finance projects above $15M. Call us at 1-800-414-5285 or contact us here to discuss your specific transaction.

HVAC, plumbing, and electrical contractors are among the strongest candidates for SBA financing in the entire trades and construction industry. The businesses are owner-operated, cash flow is predictable and documentable, lender appetite is strong, and the SBA 7a and 504 programs cover virtually every financing need a trades contractor will encounter — from opening new locations to buying a competitor or buying out a partner (both with no down payment under the SBA expansion rules) to purchasing and/or renovating a building to ground-up construction of a new facility.

This page covers the full range of SBA financing options available to licensed trades contractors, with specific guidance on how each use case is structured, what lenders look for, and what down payment to expect at different deal sizes.

Key Takeaways

HVAC and plumbing contractors share NAICS code 238220 — an HVAC contractor can acquire a plumbing company with no down payment under the SBA expansion rule.
Electrical contractors are NAICS 238210 — cross-trade acquisitions don't qualify for the expansion rule but may qualify under the two-business NAICS strategy.
A single SBA 7a loan can wrap a business purchase, real estate, equipment, business debt consolidation, working capital, and closing costs into one closing.
First-time buyers need 10% down; existing operators expanding in the same industry can put 0% down when all four expansion rule conditions are met.
Ground-up construction closes once — no separate construction loan and permanent loan.
Partner buyouts, competitor acquisitions, and real estate purchases are all well-established uses of SBA financing for trades contractors.

Why Are Trades Contractors Such Strong SBA Borrowers?

SBA lenders evaluate businesses on a handful of core criteria — cash flow predictability, owner experience, market demand, and collateral. Trades contractors score well on all of them.

Recurring service contract revenue — maintenance agreements, annual inspection programs, preferred customer plans — is particularly valuable from a lender's perspective because it is contractually committed, relatively immune to economic cycles, and easy to document. An HVAC company with 400 active maintenance agreements looks very different to an underwriter than a business with purely project-based revenue. The same applies to plumbing and electrical contractors with commercial service agreements or ongoing relationships with property management companies.

Beyond cash flow, trades businesses benefit from strong market fundamentals. Demand for licensed HVAC, plumbing, and electrical services is driven by housing stock age, commercial building requirements, and regulatory mandates — none of which disappear in an economic downturn. Lenders understand this, which is why trades acquisitions and real estate deals get approved at leverage levels that would be uncomfortable for lenders in more cyclical industries.

For an existing trades operator looking to grow, the current market includes a meaningful number of retirement-driven sellers — many of whom are motivated and flexible on deal structure.

What Does the NAICS Code Mean for My SBA Loan Options?

Understanding how your business is classified under the NAICS system matters more than most borrowers realize, because it directly affects your SBA loan eligibility and — critically — whether you can acquire a competitor with no down payment.

Trade	NAICS Code	Classification
HVAC Contractors	238220	Plumbing, Heating & Air-Conditioning Contractors
Plumbing Contractors	238220	Plumbing, Heating & Air-Conditioning Contractors
Electrical Contractors	238210	Electrical Contractors & Other Wiring Installation

HVAC and plumbing share NAICS 238220. This means an HVAC contractor acquiring a plumbing company — or vice versa — is treated as a same-industry expansion under the SBA's expansion rule. If the other conditions are met, no down payment is required. This is one of the most useful financing facts in the trades space and most contractors are not aware of it.

Electrical contractors are classified under 238210 — a different 6-digit code. An HVAC or plumbing contractor acquiring an electrical company, or an electrical contractor acquiring an HVAC company, would not qualify for the no-down-payment expansion rule under a single loan. However, the two-business NAICS strategy — which allows a borrower to carry up to $5M in SBA loans in each of two different NAICS codes simultaneously — may apply. That is a separate conversation worth having if a cross-trade acquisition is on your radar.

How Does SBA Financing Work for Buying a Trades Business?

Business acquisition is the most common use of SBA 7a financing for trades contractors, and it is where the program's advantages over conventional lending are most pronounced. Conventional lenders are frequently uncomfortable financing goodwill-heavy service business acquisitions at high loan-to-value ratios. The SBA guaranty changes that calculus and enables lenders to finance these acquisitions at leverage levels that would otherwise be unavailable.

First-Time Buyer — 10% Down

If you do not currently own a trades business and are acquiring one for the first time, the standard SBA 7a down payment is 10% of total project costs — which includes the purchase price, working capital, and closing costs. The 10% does not have to come entirely from personal savings. Acceptable sources include retirement account rollovers through a ROBS structure (tax-free and penalty-free when done correctly), borrowed funds from a home equity line, investor equity from friends or family, and seller notes on full standby.

Existing Operator — No Down Payment

If you already own a profitable HVAC, plumbing, or electrical business and are acquiring another business in the same industry, you may qualify for 100% financing with no down payment under the SBA's expansion rule. Four conditions must be met:

The Four Expansion Rule Requirements:

Same 6-digit NAICS code — the acquisition must be classified identically to your existing business
Identical ownership structure — the same owners in the same percentages
Existing business as formal co-borrower — your existing operation is on the loan, not just providing background support
Management control standard — management can exercise similar daily control over both businesses

When all four conditions are met, the equity and cash flow of your existing business substitutes for the down payment. This is covered in full detail in our post on using an SBA loan to buy a competitor.

Seller Note Option — 5% Down

The 5% Path: For first-time buyers who perhaps do not want to put down the full 10%, there is a path to closing with just 5% down. If the seller is willing to hold a note equal to 5% of the purchase price on full standby for the life of the SBA loan — meaning no payments of any kind until the SBA loan is paid off or refinanced — the SBA treats that seller note as equity. The buyer contributes 5%, the seller holds 5% on full standby, and the SBA 7a finances the remaining 90%.

What Gets Financed in a Trades Acquisition?

A single SBA 7a loan can wrap all of the following into one closing:

The full purchase price of the business, including goodwill
Real estate, if the seller owns the building and it is part of the deal
Equipment, vehicles, and tools included in the transaction
Working capital for the transition period — payroll, materials, operating costs
All closing costs — legal, appraisal, SBA guaranty fee, environmental if applicable

Deal Size	Structure	Notes
$500K – $2M	Standard SBA 7a	Fairly straightforward underwriting
$2M – $5M	Standard SBA 7a	Borrower may need to be stronger
$5M – $9M+	Layered structure	Fewer possible lenders; solid borrowers only

Can I Use an SBA Loan to Buy My Shop Building?

Owning the building your trades business operates from is one of the most financially sound decisions an established contractor can make. You stop paying rent to a landlord, build equity in a hard asset, and eliminate the risk of lease non-renewal disrupting your business operations.

Feature	SBA 7a	SBA 504
Down payment	0–10%	10%
Rate	Fixed or variable	Fixed (SBA portion)
Max amortization	25 years	20–25 years
Project capacity	Up to $5M standard; $9M+ layered	$15M+
Can wrap equipment/working capital	Yes	No
Best for	Smaller deals; combining multiple uses	Larger deals; long-term rate certainty

Special-Use Property Note: Most trades contractor shop buildings are not classified as special-use properties and follow standard down payment rules. However, if the property has characteristics that significantly limit its use to a specific trade or purpose, the SBA will determine that it requires an additional 5% down payment. Discuss this early in the process if the property has unusual characteristics.

How Does SBA Construction Financing Work for Trades Contractors?

For trades contractors who cannot find suitable existing buildings to purchase, or who want a facility purpose-built for their specific operation, an acquisition with construction or ground-up construction is a viable and well-supported use of SBA financing. The SBA 7a closes once as a construction-to-permanent loan — no separate construction loan and permanent loan, no double closing costs.

What the SBA 7a Construction Loan Covers — One Closing:

Land acquisition — purchase of the lot immediately before construction begins
Full construction costs — hard costs, soft costs, architect and engineering fees
Construction period interest — payments during construction come from reserves built into the loan, not out of pocket
Post-opening reserves — additional months of payments built in to cover any ramp-up period
Equipment and build-out — specialized shop equipment, lifts, storage systems, office build-out
Debt consolidation — if necessary as part of the overall transaction
Working capital — initial operating costs during the transition to the new facility
Moving costs — including heavy equipment relocation
All closing costs — including the SBA guaranty fee

When Does Refinancing Into an SBA Loan Make Sense?

Refinancing is an underutilized option for trades contractors, and the current rate environment could be favorable for those carrying higher-rate debt. Some contractors took on high-rate conventional debt, equipment financing, or SBA 7a loans when rates were at their peak in 2023–2024. Refinancing that debt into a longer-term, lower-rate structure can meaningfully improve monthly cash flow and free up capital for growth.

Refinancing into an SBA loan makes the most sense when one or more of the following apply:

You have a high-rate conventional loan or equipment financing that can be consolidated into a lower-rate, longer-term SBA structure
You have a floating-rate SBA 7a loan taken out at peak rates and want to refinance with a lender offering better terms — possibly into a 25-year fixed-rate SBA 7a
You want to release a personal real estate lien that a previous SBA lender took as collateral and replace it with a cleaner structure

SBA 504 Refinance Program: Trades contractors who own their building can refinance existing commercial real estate debt into the 504's fixed-rate structure. Key requirements: the loan being refinanced must have been outstanding for at least two years, the business must have been operating for at least two years, and at least 85% of the original loan proceeds must have been used for 504-eligible purposes. A cash-out component for qualified business expenses is also available.

Can an SBA Loan Be Used to Buy Out a Business Partner?

Partner buyouts are one of the most common and most underdiscussed uses of SBA financing for trades contractors. The SBA 7a finances the purchase of the departing partner's ownership interest, with the business itself serving as the primary collateral. Whether an equity injection is required depends on the business's balance sheet — see the FAQ below for the full breakdown under current SBA rules.

Real Deal: HVAC Company Acquisition and Building Purchase — $0 Down

Deal Example — $2.475M HVAC Acquisition + Building, $0 Down

A licensed HVAC contractor in a southeastern market with eight years of operating history and $2.8M in annual revenue acquires a retiring competitor and purchases the competitor's shop building as part of the same transaction. The competitor has operated for 24 years, has 380 active residential maintenance agreements, a fleet of four service vans, and owns a 6,000-square-foot shop and office building on a half-acre lot.

Business purchase price (goodwill, equipment, contracts)	$1,400,000
Real estate purchase price	$850,000
Working capital	$150,000
Closing costs and SBA fee	$75,000
Total project cost — $0 down payment	$2,475,000

Because the acquiring owner already operates a profitable HVAC business under NAICS 238220 with the same ownership structure, the SBA expansion rule applies. The existing business is a formal co-borrower. No down payment is required. The full $2.475M is financed in a single SBA 7a loan at a 25-year amortization, with a 5%/3%/1% prepayment penalty for the first three years.

Common Scenarios — How These Deals Come Together

Scenario 1 — Electrical contractor buying a retiring HVAC competitor: The owner of a $1.8M electrical contracting business wants to acquire a $1.2M HVAC business from a retiring owner. Because HVAC is NAICS 238220 and electrical is 238210 — different codes — the expansion rule does not apply. The buyer needs 10% down on total project costs. A seller note from the retiring owner covering 5% can reduce the cash required to 5%.

Scenario 2 — Plumbing contractor adding a second location with a building: An established plumbing contractor with $3.5M in revenue wants to expand into an adjacent market by purchasing a smaller plumbing business and its shop building. Same NAICS, same ownership — the expansion rule applies. No down payment. The acquisition and real estate are wrapped into a single SBA 7a at a 25-year amortization. The existing business's track record and cash flow carry the deal.

Scenario 3 — First-time buyer acquiring an HVAC business: A licensed HVAC technician with 12 years of field experience wants to acquire an owner-operated HVAC company from a retiring owner. No existing business, so 10% down is required. Total project cost is $1.1M ($950K purchase price + $100K working capital + $50K closing costs). The buyer uses a ROBS structure to roll $75K from a 401(k) tax-free, contributes $35K in personal savings, and closes at the 10% down standard.

Scenario 4 — Trades contractor building a new facility: An electrical contractor with $4.2M in revenue has outgrown leased space and wants to build a purpose-designed facility. Total project cost including land, construction, equipment, and reserves is $1.8M. The contractor puts in 10% ($180K) at closing. The SBA 7a construction-to-permanent loan handles the rest, with no out-of-pocket payments during the 14-month construction period.

Discuss Your Transaction With Us

Whether you are buying a competitor, purchasing your shop building, refinancing existing debt, or buying out a partner, we work with SBA lenders across the country who understand trades contractor financing at every deal size.

Frequently Asked Questions

Can an HVAC contractor buy a plumbing company with no down payment?

Yes — if the acquiring owner already operates a profitable business and the other expansion rule conditions are met. HVAC and plumbing contractors share NAICS code 238220, which means a same-code acquisition qualifies for the no-down-payment expansion rule. The four conditions — same NAICS, identical ownership, existing business as co-borrower, and management control — all need to be satisfied, but the code match is not the obstacle it would be for a cross-trade acquisition.

What about an HVAC or plumbing contractor acquiring an electrical company?

Electrical contractors are classified under NAICS 238210 — a different 6-digit code from HVAC and plumbing's 238220. The no-down-payment expansion rule requires the same 6-digit code, so a cross-trade acquisition between electrical and plumbing or HVAC would not qualify under that rule. However, the two-business NAICS strategy may allow a borrower to carry up to $5M in SBA loans in each of two different NAICS codes simultaneously. Call us to discuss if this scenario applies to your situation.

How long does it take to close an SBA acquisition loan for a trades business?

For a clean deal with complete documentation, 45 to 75 days is a realistic timeline from application to closing. Deals that include real estate could take 75 to 90 days since an appraisal and typically a Phase 1 Environmental Report will be required. Timeline is also very lender dependent — working with a lender experienced in trades acquisitions is the single biggest factor in closing efficiently.

Do I need industry experience to get an SBA loan to buy a trades business?

Relevant experience helps, but it does not have to mean prior ownership of the same type of business. A project manager with 15 years in HVAC construction who wants to acquire a service contractor is a very different profile from someone coming in cold. What lenders want to see is a credible path to being able to run the business — whether that comes from direct industry experience, a management background in a related field, or a strong operational team already in place.

Can I finance equipment and vehicles along with a real estate purchase?

Yes — the SBA 7a can wrap real estate, equipment, vehicles, working capital, and closing costs into a single loan. This is one of its primary advantages over the SBA 504, which is more restrictive about mixing the use of proceeds. If the real estate portion exceeds 51% of the total project cost, the loan qualifies for a 25-year amortization on the full amount, which keeps monthly payments lower even when equipment and other shorter-lived assets are included.

What credit score do I need for an SBA loan as a trades contractor?

There is no SBA-mandated minimum credit score for loans above $350,000. Individual lenders set their own standards, and there is significant variation across the lender universe. Generally, a personal credit score in the mid-600s or above, with no recent delinquencies and no prior government loan defaults, is workable with the better lenders. Past credit issues that are older and well-explained are not automatic disqualifiers. What one lender declines, another will approve.

Is there a prepayment penalty on SBA loans for trades businesses?

It depends on the loan type and term. Business acquisition loans are almost always structured as 10-year loans, and the SBA prepayment penalty only applies to loans with terms longer than 15 years — so acquisition loans have no prepayment penalty at all. Real estate loans are typically structured with 25-year amortizations and carry the SBA's standard prepayment penalty of 5% in year one, 3% in year two, and 1% in year three — nothing after that.

Can I use an SBA loan to buy out my business partner?

Yes — partner buyouts are a well-established use of the SBA 7a program. The loan finances the purchase of the departing partner's ownership interest, with the business's cash flow supporting repayment.

Whether an equity injection is required depends on the business's balance sheet. Under current SBA rules (updated June 2025), no equity injection is required if two conditions are both met: the remaining owner has been actively participating in the business and has held the same or greater ownership interest for at least the prior 24 months, and the business's debt-to-worth ratio is no greater than 9:1 on the most recent fiscal year-end and current quarter balance sheets. When both conditions are satisfied, the buyout can be financed at 100%.

If those conditions are not met, the remaining owner must contribute cash equal to the lesser of the amount needed to bring the debt-to-worth ratio to 9:1, or 10% of the purchase price. Note that under current rules, a seller note from the departing partner cannot be used to satisfy the equity injection requirement in a partner buyout. The buyout must be structured as a single closing — the SBA no longer permits phased or incremental ownership transfers. The loan is typically a 10-year business acquisition loan with no prepayment penalty.

SBA Loans for HVAC, Plumbing & Electrical Contractors — Acquisition, Real Estate & More