State facts
Written and reviewed by Michael LaBarbera, licensed insurance agent
Delaware licenses design professionals through 4 boards we confirmed on official state websites. Architects: Board of Architects. Professional engineers: Delaware Association of Professional Engineers. Land surveyors: Board of Professional Land Surveyors. Landscape architects: Board of Landscape Architecture.
| Discipline | Board | Status | What the official page says |
|---|---|---|---|
| architects | Board of Architects | licensed | The board issues architect licenses and business certificates of authorization. |
| professional engineers | Delaware Association of Professional Engineers | licensed | DAPE is an instrumentality of the State regulating the practice of engineering. |
| land surveyors | Board of Professional Land Surveyors | licensed | The board issues licenses to land surveyors and interns. |
| landscape architects | Board of Landscape Architecture | licensed | The board issues licenses to landscape architects. |
| interior designers | Not confirmed | Not confirmed from an official source | — |
Facts come from each board's official website. Board rules change, so confirm details with the board. These facts do not change policy terms; policy wording controls.
National figures, not Delaware-specific. Each links to its source.
The market is broadly stable with ample capacity despite carrier consolidation.
Source: Insurance Marketplace Realities 2026 Spring Update – Architects & Engineers — WTW (2026-05-07)
Renewal rate forecasts ranged between -5% and -10% so far in 2026.
Source: Insurance Marketplace Realities 2026 Spring Update – Architects & Engineers — WTW (2026-05-07)
Average claims were around $130,000, with severity claims exceeding $250,000.
Source: Insurance Marketplace Realities 2026 Spring Update – Architects & Engineers — WTW (2026-05-07)
Insurers’ scrutiny of risk quality and documentation remained unchanged.
Source: Insurance Marketplace Realities 2026 Spring Update – Architects & Engineers — WTW (2026-05-07)
Carriers quoted through our agency. Shown in no particular order; no ranking or endorsement is implied. Availability in Delaware is confirmed in underwriting.
| Carrier | Limits | Deductible | Source |
|---|---|---|---|
| The Hartford — Small Business design professional liability | $250K–$2M annual limits | $0–$10K deductible | Design Professional Liability — The Hartford |
| Hiscox | Limits capacity up to $10M on a primary or excess basis. | Deductible credit included in base form; aggregate deductible option available. | Hiscox PRO Architects and Engineers — Design, Construction and Real Estate Development |
| Great American | $250,000 per claim/$250,000 aggregate to $5 million per claim/$5 million aggregate. | $0 deductible option for qualified small firms; aggregate deductible option for most firms. Early-resolution credits: 75% within one year or 50% within three years (only higher credit applies). | Great American Professional Liability Division — Protection for Design Professionals |
| GUARD | Up to $5 million per claim. | Deductibles starting at $2,500. | Professional Liability/E&O — Architects & Engineers |
| Travelers | Ask us | Claims guide: agreeing to claim resolution by mediation reduces the deductible obligation by 50%, up to a $25,000 reduction. | Design Professional Liability Insurance — Travelers Claim Services Guide |
| Hanover | Ask us | Additional claim-free and risk management deductible reduction benefits offered. | Professional liability for architects and engineers |
Illustrative scenarios, not actual agency losses or Delaware cases.
A connection detail is found to be inadequate before occupancy. Access work, revised detailing, and retrofit create substantial corrective costs.
Illustrative claim amount: $650,000.
A correction before injury still can generate a serious claim; record calculations and report the demand promptly.
A grading plan directs runoff into a building’s lower level. The owner questions elevations and coordination of drainage around the structure.
Illustrative claim amount: $180,000.
Record drainage assumptions, consultant roles, and construction changes to identify the source of the problem.
The Board of Architects, per its official website: The board issues architect licenses and business certificates of authorization.
The Delaware Association of Professional Engineers, per its official website: DAPE is an instrumentality of the State regulating the practice of engineering.
The Board of Professional Land Surveyors, per its official website: The board issues licenses to land surveyors and interns.
The Board of Landscape Architecture, per its official website: The board issues licenses to landscape architects.
We could not confirm a Delaware board for interior designers on an official source, so we make no claim about it.
No. Published claims and market data for design professionals are reported nationally, not by state. We show cited national figures so Delaware firms can see the broader market; your own quote depends on your firm.
Carrier materials we cite list the limit and deductible ranges shown in the table. Availability in Delaware is confirmed during underwriting.
A retroactive date is the prior-acts boundary on a claims-made policy: services performed before that date may fall outside coverage even when the claim arrives during the current policy.
Most architecture firms carry professional liability insurance because clients, owners and contracts commonly ask for it and because design-error allegations can arise years after a project closes.
Generally no: general liability is not a substitute for professional liability when the allegation is a design error.
Usually not: additional-insured status is typically a general liability request, and professional liability policies generally do not add clients as additional insureds.
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