Lockton vs 
Marsh: How Do They Compare for Commercial Property Insurance?
Lockton brokers directly with underwriters and offers manuscript policy design; Marsh lists catastrophe modeling, claims advocacy and specialized data-center placements.
Lockton says it can negotiate custom property wording; Marsh’s technology practice pairs data-center property with equipment breakdown, business interruption, cyber and liability. 1,3
What Are the Key Differences Between Lockton and Marsh Commercial Property Insurance?
Custom Terms or Data-Center Coverage
If standard policy terms do not fit your property, Lockton says it can negotiate custom wording. For a data center, Marsh’s technology practice pairs property with equipment breakdown, business interruption, cyber and liability. Choose Lockton if you need custom property terms; choose Marsh if you operate a data center and want those coverages considered together. 1
For data centers specifically, Marsh says property coverage is typically paired with equipment breakdown, business interruption, cyber and general liability coverage to close gaps that a conventional property policy alone would leave open. 3Company-reported. Data center insurance page FAQ.
A Shared Analysis Service, Applied Differently
Both firms describe modeling catastrophe exposure: Lockton lists catastrophic modeling among its property services, applied broadly across accounts, while Marsh McLennan Agency names loss and catastrophe modeling specifically within its Benefits of Property Insurance description. 1 2 Lockton additionally names exposure and stratification-of-value analysis and retention analysis for deductible selection, which Marsh's reviewed pages do not describe.
Who You Work With
Lockton says the same team that meets a client also negotiates directly with underwriters on their behalf, rather than routing through a centralized broking center. 1 Marsh McLennan Agency instead names an individual role, its National Accounts Property Practice Leader, for advisor-led placement. 2
What Should You Confirm in Lockton and Marsh Commercial Property Insurance Quotes?
- Ask Lockton whether a manuscript policy applies to your account and how its wording compares to market-standard forms. 1
- If you run a data center, ask Marsh whether the bundled cyber and equipment breakdown coverage is included in or separate from your property quote. 3
- Get the issuing insurer from both; neither reviewed page names one. 1 2
- Ask both for published limits or deductibles, since neither discloses them.
Lockton vs Marsh Commercial Property Insurance Compared
Lockton vs Marsh: Commercial Property Insurance: documented features by provider
| Criteria | Lockton Property Insurance Brokerage | Marsh McLennan Agency Commercial Property Insurance |
|---|---|---|
| Coverage Features | Lockton says it can tailor its own proprietary manuscript property policy to a client's coverage needs, rather than only placing standard-form property policies. 1Company-reported. Property product page as read 2026-09-23. The manuscript form's actual wording and how it compares to standard forms was not published on this page. | MMA says commercial property insurance protects an organization's physical assets, including owned or rented property, equipment and inventory, from unexpected loss events, with named options for flood, hurricane and windstorm, wildfire and earthquake coverage. 2Company-reported. MMA property insurance page; illustrative description, not a specific policy form. For data centers specifically, Marsh says property coverage is typically paired with equipment breakdown, business interruption, cyber and general liability coverage to close gaps that a conventional property policy alone would leave open. 3Company-reported. Data center insurance page FAQ. |
| Role in This Line | Lockton's property team negotiates commercial property placements directly with underwriters rather than through a centralized broking center, and says the same team that meets a client also negotiates with the market on their behalf. 1Company-reported. Property product page as read 2026-09-23. | Marsh McLennan Agency (MMA), Marsh's middle-market subsidiary, places commercial property insurance; separately, Marsh's technology industry practice arranges property coverage for digital infrastructure such as data centers. 2,3Company-reported. MMA property insurance page and Marsh's data center insurance page. |
| Risk Services | Lockton lists specific property services: detailed review of coverage terms, conditions and policy wordings; retention analysis for deductible selection; exposure and stratification-of-value analysis; catastrophic modeling; preparation of underwriting specifications; and assistance with complex claim recovery. 1Company-reported. Property product page as read 2026-09-23. These are described capabilities, not a guarantee of outcome on any specific account. | MMA says its property practice offers hazard assessment and valuation services, loss and catastrophe modeling, claims advocacy, pre- and post-loss risk control, and alternative risk solutions such as captives and parametric insurance options. 2Company-reported. MMA property insurance page, Benefits of Property Insurance section. |
