Short answer
Solo architecture firm insurance doesn’t depend on a revenue threshold. No single revenue level tells every new architecture or engineering firm when to buy professional liability insurance. What matters is when you begin providing professional services. If you wait until revenue grows, you may have already done work that could later lead to a claim.
A new firm should weigh the type of work, its contracts, client insurance requirements, and projected revenue. It should also consider claims-made coverage and whether a policy can cover prior professional services.
New firms often wonder if they earn enough to justify the premium, yet even a small project can lead to a claim many times the fee. Coverage bought after a project is finished may not respond to that project. It often depends on whether the insurer will set a retroactive date early enough to include it.
The problem with “I’ll get insurance when I have more revenue”
A new practice often starts gradually. You leave a larger firm and take on a small residential project. Then another project comes along, and revenue grows from $5,000 to $20,000 to $50,000. Because the business is still small, paying for insurance can feel premature.
A Reddit discussion about starting a small architecture firm raised that concern. One architect considering moonlighting asked about liability insurance. The cost of insurance and other startup expenses could make taking only one or two projects hard to justify. The discussion also asked whether professional liability policies can cover individual projects.
The timing of your first policy depends less on reaching a revenue level. It depends on when your professional services begin and what coverage applies to that work.
When does solo architecture firm insurance become relevant?
The question generally starts when you begin providing professional services for clients. This applies especially when you work independently rather than solely as an employee of another firm.
That can happen before the business feels like a “real firm.” You may still be:
- Working from home
- Moonlighting after your regular job
- Taking only small projects
- Operating as a sole proprietor
- Generating very little revenue
- Building a client base gradually
The size of the business doesn’t tell you whether a professional liability exposure exists. If you provide architectural or engineering services, consider what would happen if someone raised an allegation about that work later.
Why claims-made timing matters for solo architecture firm insurance
Insurers commonly write professional liability insurance for architects and engineers on a claims-made basis. Coverage can therefore depend on several factors:
- When someone makes the claim
- When the professional services occurred
- The policy’s retroactive date
- Other policy terms
Suppose you complete three projects in your first year but buy a policy the following year. You can’t assume the new policy automatically covers the earlier projects. Whether it covers prior work depends on its retroactive date and any prior-acts provisions.
What is a retroactive date?
A retroactive date can determine how far back covered services extend under a claims-made policy. Suppose a policy has a retroactive date of January 1, 2027. Work performed before that date may not be covered for a claim made during the policy period, subject to the policy language.
For this reason, waiting until after several projects can create a coverage question. When you buy your first policy, ask the broker:
- What is the retroactive date?
- Does the policy cover prior professional services?
- Can the policy cover work I performed without insurance?
- What information does the insurer need about those earlier projects?
Don’t assume a new policy picks up everything you did before you bought it.
What if you already completed projects?
This is where waiting for more revenue can get complicated. If you already provided professional services without insurance, tell your broker exactly what work you performed. The insurer may ask about:
- Previous projects
- Dates of the work
- Current and former clients
- Known circumstances or potential claims
- Revenue from prior services
- The type of professional services performed
Whether the policy can cover prior work depends on the insurer and the policy terms. A broker can explain your options based on your actual history. Above all, address prior work openly instead of assuming the policy covers it.
What if a small project requires a COI?
New firms often face a request for a certificate of insurance. You may have completed several small projects without anyone asking for professional liability insurance. Then a new client requires a specific limit before you can start.
At that point, buying a policy may not solve every issue. The client may require:
- A specific professional liability limit
- Evidence of current coverage
- A particular retroactive date
- Coverage for the full project duration
- Specific contractual insurance provisions
The policy also needs to fit the services you provide. For that reason, discuss insurance before a project with a short deadline lands on your desk.
How much does revenue matter for solo architecture firm insurance?
Revenue still matters. A new firm with $10,000 of projected revenue presents a different profile from an established practice with $500,000. Premiums can reflect projected revenue and other underwriting factors. Still, no universal rule says a firm should wait until it reaches a particular revenue level.
In the Reddit discussion, one architect described getting quotes based on projected revenue. This architect noted that starting small could result in a smaller premium. Another commenter worried that the cost for only one or two projects might make them hard to justify.
These are individual experiences, not universal pricing rules. Actual premiums depend on the insurer, services, location, limits, deductible, claims history, and other factors. The practical step is to get a quote before deciding the cost is too high.
What about moonlighting?
Many solo practices begin as side businesses. You may keep working for another firm while taking a few outside projects in the evenings or on weekends. Several architects in the Reddit discussion described moonlighting as a way to build a practice gradually.
If you do this, don’t assume your employer’s policy covers the outside work. The outside project may involve a different client, a different business arrangement, and work outside your employment. Before accepting moonlighting work, consider:
- Whether your employment agreement permits outside work
- Who contracts with the client
- Which entity provides the professional services
- Whether your employer’s policy applies
- Whether you need separate professional liability coverage
- Whether the client requires specific insurance
Your insurance should match the work you actually do.
Can you buy professional liability insurance for only one project?
This is a reasonable question for someone with one small project who isn’t ready to run a full-time practice. The Reddit discussion asked whether policies can cover a single project.
Project-specific professional liability solutions may exist in some circumstances. However, availability and suitability depend on the insurer, project, services, contract, and other underwriting factors. Don’t assume a single-project policy will always be available or will satisfy a client’s insurance requirement.
If you consider this option, give the broker the actual project details and contract requirements. A generic E&O quote request won’t give the broker enough to work with.
Example
An architect leaves a larger firm and begins taking residential projects independently. The first project produces $5,000 in revenue. A few months later, another client hires the architect for a $15,000 project. The architect expects another $30,000 to $40,000 of work during the year.
At first, the architect considers waiting until the practice reaches $100,000 in revenue before buying professional liability insurance. Before deciding, the architect talks with a broker. The broker reviews:
- The professional services provided
- The completed and current projects
- Projected revenue
- Whether any clients require insurance
- The desired limits and deductible
- The possibility of coverage for prior professional services
- The retroactive date
- The moonlighting arrangement, if applicable
The architect can then compare the cost of coverage with the actual exposure and contractual requirements.
What to check
- Have you begun providing professional services to clients, even on a small scale?
- What retroactive date would a new policy carry?
- Can the policy cover professional services you already performed?
- Does any current or upcoming client require a specific limit or retroactive date?
- Does your employer’s policy cover any outside work you take?
- Have you asked a broker for a quote before deciding the cost is too high?
Related questions
Do I need E&O before my architecture firm has revenue?
No universal revenue threshold applies. However, if you already provide professional services, discuss coverage before assuming low revenue means insurance can wait. The type of work, contracts, client requirements, and available options all matter.
Can I buy professional liability insurance after I’ve already completed projects?
You may be able to, but you should disclose the prior work to the broker. Whether the new policy covers those services depends on the insurer’s underwriting and the policy terms. Don’t assume a policy bought today covers past work.
Will E&O cover work I performed before buying the policy?
It may, depending on the retroactive date, prior-acts provisions, and other terms. Some policies cover eligible prior services, while others may not.
Does a solo architect need professional liability insurance?
A solo architect should evaluate coverage when providing architectural services independently. Whether a client, contract, or jurisdiction requires it is a separate question. Even when no one asks for a certificate of insurance, professional services can still create exposure.
Can I get E&O for only one project?
Project-specific options may be available in some circumstances, but they aren’t universally available or appropriate. The project, services, contract, limits, insurer, and underwriting factors all matter. Ask a broker to evaluate your options instead of assuming only an annual policy or a project policy exists.
This article is educational and does not provide legal advice or determine whether a specific claim is covered. Policy terms, exclusions, underwriting requirements, and applicable law vary. Consult your insurance professional and qualified legal counsel regarding your circumstances.