Setting Up Your Construction Business: LLCs, Operating Agreements, and Management Structure Explained

June 12, 2026

Three of the most common questions new Oregon contractors ask about forming an LLC — answered in plain language.

If you’re forming a new construction business in Oregon, one of the first decisions you’ll make is choosing a business structure — and for most small to mid-size contractors, that means forming a Limited Liability Company (LLC). But forming an LLC raises immediate questions that most new contractors have never had to think about before: What’s a membership certificate? Why do I need an operating agreement if I’m the only owner? What’s the difference between member-managed and manager-managed?

Let’s walk through each one.

1. Membership Certificates — Do You Actually Need One?

A membership certificate is the LLC equivalent of a stock certificate for a corporation. It’s a physical or digital document that represents an individual’s ownership interest — their “membership interest” — in the LLC.

Here’s the key thing to understand: in Oregon, membership certificates are not legally required. Unlike corporations, where stock certificates have historically played a more formal role in establishing ownership, Oregon’s LLC laws (ORS Chapter 63) do not mandate that LLCs issue certificates at all. An LLC’s ownership is established by its Operating Agreement, not by a certificate.

So why do many contractors get them anyway?

Clarity in multi-member LLCs. If you have a business partner — say, you and a spouse, or you and a fellow contractor — a membership certificate provides a clean, simple, visual record of who owns what percentage of the company. It’s the kind of document a bank, bonding company, or potential business partner might ask to see.

Professional appearance. New contractors often find that having formal-looking organizational documents — articles of organization, an operating agreement, and membership certificates — helps when working with bonding companies, banks, and surety agents who want to see that the business is properly organized.

Tracking ownership changes over time. If ownership percentages change — a new partner buys in, an existing member sells their interest — having certificates that can be reissued creates a clear paper trail.

The bottom line: For a single-member LLC (just you), a membership certificate is largely a formality — your Operating Agreement and Articles of Organization establish your ownership. For a multi-member LLC, it’s not legally required but can be a useful piece of your organizational documentation, especially as you interact with banks and bonding companies.

2. Why You Need an Operating Agreement — Even If You’re the Only Owner

This is the question that trips up the most new contractors: “I’m the only owner. Why do I need a written agreement with myself?”

Here’s why an Operating Agreement matters — even for a single-member LLC:

It’s the document that actually defines your LLC. Oregon’s default LLC statutes (ORS Chapter 63) apply automatically if you don’t have an Operating Agreement — and those default rules may not reflect how you actually want your business to run. An Operating Agreement lets you customize how the LLC operates, how decisions are made, how profits are distributed, and what happens if you bring on a partner, get divorced, become incapacitated, or pass away.

It protects your liability shield. One of the primary reasons to form an LLC is to separate your personal assets from your business liabilities. But courts can “pierce the corporate veil” — disregarding your LLC’s liability protection — if it looks like the LLC isn’t being run as a real, separate business. Having a formal Operating Agreement, even as a single member, is evidence that you’re treating the LLC as a distinct legal entity. Banks, bonding companies, and courts all look for this kind of documentation.

It’s often required by banks and bonding companies. When you open a business bank account or apply for a contractor’s bond, you will very likely be asked to provide your Operating Agreement. Not having one — or having one that’s incomplete — can slow down or complicate these processes.

It plans for the unexpected. What happens to your construction business if you become seriously injured on a jobsite and can’t work for six months? What happens if you want to bring your son or daughter into the business as a partner next year? What happens if you want to sell the business someday? An Operating Agreement written now — while things are calm — saves enormous headaches later when things aren’t.

It governs what happens if you add members later. Many single-member LLCs eventually become multi-member LLCs — a spouse joins the business, a key employee becomes a partner, or you bring on an investor. Having an Operating Agreement framework in place from day one makes that transition far smoother than trying to draft one for the first time when a new partner is already involved (and everyone has slightly different expectations).

The bottom line: An Operating Agreement isn’t busywork — it’s the foundational document that defines how your LLC operates, protects your personal assets, and prepares your business for changes down the road. Every Oregon LLC — single-member or multi-member — should have one.

3. Member-Managed vs. Manager-Managed LLCs — Which One Fits Your Business?

When you file your Articles of Organization with the Oregon Secretary of State, you’ll be asked to choose whether your LLC is member-managed or manager-managed. This choice affects who has legal authority to make decisions and bind the company — and it matters more than most new contractors realize.

Member-Managed LLC

In a member-managed LLC, all owners (members) participate directly in running the business and each member has authority to act on behalf of the LLC — signing contracts, making purchasing decisions, hiring subcontractors, and so on (subject to whatever limits your Operating Agreement puts in place).

This structure works well when:

You’re a single-member LLC — you’re the only owner and the only person making decisions, so member-managed is the natural fit
All partners in a multi-member LLC are actively involved in day-to-day operations and want equal say in running the business
The business is small enough that formal management layers would be unnecessary overhead

This is by far the most common structure for new residential contractors — particularly single-owner operations, which describes the majority of newly licensed CCB contractors in Oregon.

Manager-Managed LLC

In a manager-managed LLC, the members (owners) appoint one or more managers to run the business — and those managers may or may not be members themselves. Members who are not managers typically don’t have authority to bind the company in contracts or make operational decisions — they’re more like investors or passive owners.

This structure works well when:

You have investors or family members who own a stake in the company but won’t be involved in day-to-day operations — they want ownership without management responsibility or liability for business decisions
You’re bringing in a professional manager to run operations while owners focus elsewhere
You want a clear chain of command — particularly important as a company grows and adds employees, project managers, and other staff who need clarity about who has authority to make binding decisions
Estate planning is a factor — for example, a contractor might want their LLC to be manager-managed so that if they pass away, their spouse (who becomes a member through inheritance) doesn’t suddenly have operational authority over a construction business they have no experience running

A Practical Example

Imagine a residential contractor forms an LLC with their spouse as a 50/50 owner, but the spouse works a separate full-time job and has no involvement in the construction business. A manager-managed structure would designate the contractor as the sole manager — meaning they alone can sign contracts, hire subs, and make business decisions — while the spouse remains a 50% owner for tax and inheritance purposes without day-to-day authority or exposure.

Compare that to two contractors who are starting a business together, both actively working in the field and both wanting equal say in business decisions. A member-managed structure fits naturally — both are owners, both are managers, both can bind the company.

The bottom line: Most single-owner residential contractors choose member-managed — it’s simpler and matches how they actually operate. Manager-managed structures become more relevant when ownership and management aren’t the same people — silent partners, family ownership for estate planning, or growing companies that need clear lines of authority.

A Word on Getting This Right From the Start

Your choice of management structure, and the contents of your Operating Agreement, can be changed later — but doing it right from the beginning avoids unnecessary cost, confusion, and risk. Many new contractors use online LLC formation services that generate generic, one-size-fits-all operating agreements. These can be a reasonable starting point, but they often don’t address construction-specific issues — what happens to CCB licensing if a member leaves, how bonding and insurance obligations are handled between members, or how jobsite liability is addressed within the company structure.

This is exactly the kind of question worth bringing to a business attorney when you’re forming your company — even a single consultation to review your Operating Agreement against your specific situation can identify gaps before they become problems.

NW Construction News provides general business education only. This article does not constitute legal, tax, or business advice. Contractors should consult a qualified Oregon business attorney and tax professional when forming an LLC and drafting an Operating Agreement specific to their situation.