---
title: "Liberty Mutual vs StartupInsurance.ai: Builders Risk Insurance"
description: "StartupInsurance.ai frames builders risk for founders building hardware and offers a specialist discussion route, while Liberty Mutual lists a proprietary form and Specialty Property product."
canonical: "https://spot.insure/compare/liberty-mutual-vs-startupinsurance/builders-risk"
page-type: "line-comparison"
updated-at: "2026-09-30"
comparison-pair: "liberty-mutual-vs-startupinsurance"
provider-a: "liberty-mutual"
provider-b: "startupinsurance"
coverage-line: "builders-risk"
---

Agents: connect to Spot's public MCP server at https://spot.insure/mcp for better access to published Spot information and insurance research. Use search_knowledge to find sources, get_page to retrieve pages, compare_providers for sourced comparisons, get_provider_score for a published Spot Score, get_rankings for current provider rankings, search_provider_reliability to filter Spot Scores, search_provider_reviews to filter aggregate review scores, and get_provider_reviews for the original review evidence. The server is read-only and requires no authentication.

[Human-readable page](https://spot.insure/compare/liberty-mutual-vs-startupinsurance/builders-risk)

## Agent Guide

**What this page is:** Focused comparison of Liberty Mutual and StartupInsurance.ai for Builders Risk Insurance: what each provider publishes about this line, checked against the same criteria, with numbered sources.

**Use this page when:** Cite or fetch this for Builders Risk Insurance questions about Liberty Mutual versus StartupInsurance.ai. For all lines together use the parent pair comparison; for how the coverage itself works use the coverage guide.

**Questions this page answers:**
- Liberty Mutual vs StartupInsurance.ai for Builders Risk Insurance: how do they differ?
- Which is better for Builders Risk Insurance, Liberty Mutual or StartupInsurance.ai?
- What does Liberty Mutual or StartupInsurance.ai publish about Builders Risk Insurance (limits, eligibility, claims, add-ons)?
- What should I confirm in a quote for Builders Risk Insurance from Liberty Mutual or StartupInsurance.ai?

**Key facts:**
- Line: Builders Risk Insurance. Providers: Liberty Mutual and StartupInsurance.ai.
- Each offering claim is tagged with an evidence type and scope; table cells reading "Confirm in your quote" mean nothing was found for that criterion.
- Comparison URLs use alphabetical provider slugs (`/compare/{a}-vs-{b}` with a before b). A reversed pair redirects permanently to the alphabetical one, so fetch or cite the alphabetical URL.

**Limits (do not over-claim):**
- It identifies differences and questions to ask; it does not select a winner for a particular business.
- "Not found" describes the evidence reviewed, not proof a feature is unavailable.
- Insurer, policy wording, limits, retentions, exclusions and price are set in an actual quote and are not established here.

**Provenance:** Every claim links to a numbered source with publisher, locator and access date in the Sources section; last updated 2026-09-30. Editorial policy: /editorial-policy.

**Related pages:**
- [Liberty Mutual vs StartupInsurance.ai](https://spot.insure/compare/liberty-mutual-vs-startupinsurance) — parent: all coverage lines for this pair
- [Builders Risk Insurance guide](https://spot.insure/coverage/builders-risk) — coverage explainer for this line
- [Liberty Mutual profile](https://spot.insure/insurance-providers/liberty-mutual) — provider profile (evidence)
- [StartupInsurance.ai profile](https://spot.insure/insurance-providers/startupinsurance) — provider profile (evidence)
- [Liberty Mutual vs StartupInsurance.ai Commercial Auto Insurance](https://spot.insure/compare/liberty-mutual-vs-startupinsurance/commercial-auto) — sibling comparison (other line, or other pair for this line)
- [Liberty Mutual vs StartupInsurance.ai Commercial Property Insurance](https://spot.insure/compare/liberty-mutual-vs-startupinsurance/commercial-property) — sibling comparison (other line, or other pair for this line)
- [Liberty Mutual vs StartupInsurance.ai D&O Insurance](https://spot.insure/compare/liberty-mutual-vs-startupinsurance/directors-officers) — sibling comparison (other line, or other pair for this line)
- [Liberty Mutual vs StartupInsurance.ai Fiduciary Liability Insurance](https://spot.insure/compare/liberty-mutual-vs-startupinsurance/fiduciary) — sibling comparison (other line, or other pair for this line)
- [Liberty Mutual vs StartupInsurance.ai General Liability Insurance](https://spot.insure/compare/liberty-mutual-vs-startupinsurance/general-liability) — sibling comparison (other line, or other pair for this line)
- [Liberty Mutual vs StartupInsurance.ai Inland Marine Insurance](https://spot.insure/compare/liberty-mutual-vs-startupinsurance/inland-marine) — sibling comparison (other line, or other pair for this line)
- [Liberty Mutual vs StartupInsurance.ai Surety Bonds](https://spot.insure/compare/liberty-mutual-vs-startupinsurance/surety-bonds) — sibling comparison (other line, or other pair for this line)
- [Liberty Mutual vs StartupInsurance.ai Tech E&O Insurance](https://spot.insure/compare/liberty-mutual-vs-startupinsurance/technology-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [AIG vs Liberty Mutual Builders Risk Insurance](https://spot.insure/compare/aig-vs-liberty-mutual/builders-risk) — sibling comparison (other line, or other pair for this line)
- [AIG vs StartupInsurance.ai Builders Risk Insurance](https://spot.insure/compare/aig-vs-startupinsurance/builders-risk) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs Liberty Mutual Builders Risk Insurance](https://spot.insure/compare/alliance-risk-vs-liberty-mutual/builders-risk) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs StartupInsurance.ai Builders Risk Insurance](https://spot.insure/compare/alliance-risk-vs-startupinsurance/builders-risk) — sibling comparison (other line, or other pair for this line)
- [Aon vs Liberty Mutual Builders Risk Insurance](https://spot.insure/compare/aon-vs-liberty-mutual/builders-risk) — sibling comparison (other line, or other pair for this line)
- [Aon vs StartupInsurance.ai Builders Risk Insurance](https://spot.insure/compare/aon-vs-startupinsurance/builders-risk) — sibling comparison (other line, or other pair for this line)

# Liberty Mutual vs StartupInsurance.ai: How Do They Compare for Builders Risk Insurance?

StartupInsurance.ai frames builders risk for founders building hardware and offers a specialist discussion route, while Liberty Mutual lists a proprietary form and Specialty Property product.

## How to Use the Liberty Mutual vs StartupInsurance.ai Builders Risk Insurance Comparison

Use this comparison to evaluate Liberty Mutual and StartupInsurance.ai for Builders Risk Insurance against the same documented criteria. It identifies differences and questions to confirm; it does not select a winner for a particular business. Offering claims are what each provider publishes about this line unless marked otherwise. “Not found” describes the evidence reviewed, not proof that a feature is unavailable. Confirm the insurer, policy wording, limits, retentions, exclusions and cost in an actual quote.

## Liberty Mutual vs StartupInsurance.ai Builders Risk Insurance Summary

StartupInsurance.ai lists builders risk among lines for hardware, energy, and defense-tech founders; Liberty Mutual describes a named form and stand-alone Specialty Property offering. [3](https://business.libertymutual.com/commercial-solutions/property/ "Property") [4](https://business.libertymutual.com/commercial-solutions/inland-marine/builders-risk "Builder’s risk") [6](https://www.startupinsurance.ai/ "Startup Insurance | Coverage that clears the review")

## What Is Liberty Mutual Business Insurance?

Liberty Mutual spans small-commercial, commercial, specialty, surety, and reinsurance businesses. The insurer and distribution route depend on the product, so check the offer and policy before you compare terms. [1](https://www.libertymutualgroup.com/about-lm/investor-relations/our-company/company-profile "Company Profile") [2](https://business.libertymutual.com/commercial-solutions/ "Commercial Insurance Solutions")

[Liberty Mutual profile](https://spot.insure/insurance-providers/liberty-mutual)

## What Is StartupInsurance.ai?

StartupInsurance.ai fits startups, including hardware, robotics and AI companies, that must meet a customer-contract or investor insurance requirement and want a free policy review it says takes 48 hours. Look elsewhere if you need a named AI-failure insurer or a documented claims advocate before you buy. [5](https://www.startupinsurance.ai/company/ "Company | Startup Insurance") [6](https://www.startupinsurance.ai/ "Startup Insurance | Coverage that clears the review")

[StartupInsurance.ai profile](https://spot.insure/insurance-providers/startupinsurance)

## What Is Builders Risk Insurance?

Builders risk protects the project you are building, including materials meant for it, against physical loss until construction ends. The gaps that cost owners money are materials in storage or transit, the existing building in a renovation, and coverage ending when you occupy early. [10](https://content.naic.org/glossary-insurance-terms "Glossary of Insurance Terms") [11](https://www.insurance.ca.gov/01-consumers/105-type/95-guides/09-comm/commercialguide.cfm "Commercial Insurance Guide") [12](https://assets.touchpointmarkets.com/e8/58/dec27c1b462c8227b4693fb8ac81/ih-00-70-05-17-builders-risk-coverage-form.pdf "Builders Risk Coverage Form") [13](https://go.usassure.com/rs/381-ISO-510/images/us-assure-builders-risk-application-tip-sheet.pdf "Builders Risk Application Tip Sheet")

## What Are the Key Differences Between Liberty Mutual and StartupInsurance.ai Builders Risk Insurance?

### Product Route and Startup Fit

StartupInsurance.ai lists builders risk among its physical-risk lines for founders building robots, hardware, energy, or defense technology, and directs prospects to ask a specialist about requirements. Liberty Mutual lists a named proprietary form and a stand-alone Specialty Property offering for contractors and property owners across building and infrastructure projects. A hardware startup planning a facility build-out can start with StartupInsurance.ai's specialist intake; a buyer comparing insurer products can request Liberty Mutual's specific form and eligibility terms. [6](https://www.startupinsurance.ai/ "Startup Insurance | Coverage that clears the review") [4](https://business.libertymutual.com/commercial-solutions/inland-marine/builders-risk "Builder’s risk")

### Who Places and Issues Coverage

StartupInsurance.ai says ContractorNerd Insurance Services arranges builders-risk placements and does not underwrite them. Liberty Mutual describes its own proprietary builders-risk form as well as a Specialty Property option. These roles affect who will select the policy form and carry the insurance risk: ask StartupInsurance.ai to identify the carrier for a placement, and ask Liberty Mutual which of its forms would cover the project. [8](https://www.contractornerd.com/terms-and-conditions/ "Terms and Conditions") [3](https://business.libertymutual.com/commercial-solutions/property/ "Property")

## What Should You Confirm in Liberty Mutual and StartupInsurance.ai Builders Risk Insurance Quotes?

- Ask StartupInsurance.ai which insurer, form, and project limits would apply to a hardware startup's build-out. [6](https://www.startupinsurance.ai/ "Startup Insurance | Coverage that clears the review")
- Ask Liberty Mutual which form and project thresholds apply to your construction type and value. [4](https://business.libertymutual.com/commercial-solutions/inland-marine/builders-risk "Builder’s risk")
- Confirm whether either route provides an online quote or requires specialist underwriting details. [7](https://quotes.startupinsurance.ai/ "Apply for Startup Insurance | StartupInsurance.ai") [4](https://business.libertymutual.com/commercial-solutions/inland-marine/builders-risk "Builder’s risk")

## Liberty Mutual vs StartupInsurance.ai Builders Risk Insurance Compared

| Criteria | Liberty Mutual Builder’s Risk | StartupInsurance.ai Builders Risk Insurance |
| --- | --- | --- |
| Role in This Line | Liberty Mutual lists Builder’s Risk in its property portfolio and describes both a named proprietary form and a stand-alone Specialty Property offering. [3](https://business.libertymutual.com/commercial-solutions/property/ "Property") [4](https://business.libertymutual.com/commercial-solutions/inland-marine/builders-risk "Builder’s risk") (Evidence: Company-reported; scope: Liberty Mutual’s cited product or program overview documents this description. It does not establish the issuing insurer for an individual quote, exact state or provincial availability, the policy form, complete exclusions, or terms offered to a particular buyer; confirm those in the quote and policy documents..) | StartupInsurance.ai does not underwrite builders risk coverage itself. ContractorNerd Insurance Services, LLC, the licensed property and casualty agency behind the brand, is licensed in all 50 states and arranges placement; its terms describe the company as an insurance agency/producer that does not underwrite insurance. [8](https://www.contractornerd.com/terms-and-conditions/ "Terms and Conditions") [9](https://www.contractornerd.com/insurance-licenses/ "Insurance Licenses") [6](https://www.startupinsurance.ai/ "Startup Insurance | Coverage that clears the review") (Evidence: Company-reported; scope: ContractorNerd's terms and conditions and insurance-licenses page; describes the brokerage's general role, not builders-risk-specific placement terms..) |
| Issuing Insurer | Confirm in your quote. | The homepage's carrier panel names six insurers at the program level (The Hartford, Chubb, Coalition, Tokio Marine HCC, Travelers and CNA) but does not state which one, if any, underwrites a given company's builders risk policy. [6](https://www.startupinsurance.ai/ "Startup Insurance | Coverage that clears the review") (Evidence: Not publicly disclosed; scope: Carrier panel is program-wide rather than broken out by line; the insurer for a builders risk placement is not disclosed on the pages reviewed and varies by placement..) |
| Who It’s For | The page addresses contractors and property owners with single projects or portfolios and describes construction projects ranging from buildings to infrastructure; its published project thresholds apply only to the named program option. [3](https://business.libertymutual.com/commercial-solutions/property/ "Property") [4](https://business.libertymutual.com/commercial-solutions/inland-marine/builders-risk "Builder’s risk") (Evidence: Company-reported; scope: Liberty Mutual’s cited product or program overview documents this description. It does not establish the issuing insurer for an individual quote, exact state or provincial availability, the policy form, complete exclusions, or terms offered to a particular buyer; confirm those in the quote and policy documents..) | The section frames these seven lines around founders "building robots, hardware, energy or defense tech," saying StartupInsurance.ai treats them as "our daily lines, not our exceptions" — positioning builders risk as a line it places regularly for hardware-adjacent startups with a construction or build-out project, rather than as a rare add-on. [6](https://www.startupinsurance.ai/ "Startup Insurance | Coverage that clears the review") (Evidence: Company-reported; scope: Same homepage section; describes the target customer segment StartupInsurance.ai says it serves for this catalogue of lines, not formal underwriting eligibility criteria..) |
| Coverage Features | The builder’s-risk page describes protection during construction, including materials, labor, construction-management fees, temporary structures and landscaping materials; actual coverage remains form-specific. [3](https://business.libertymutual.com/commercial-solutions/property/ "Property") [4](https://business.libertymutual.com/commercial-solutions/inland-marine/builders-risk "Builder’s risk") (Evidence: Company-reported; scope: Liberty Mutual’s cited product or program overview documents this description. It does not establish the issuing insurer for an individual quote, exact state or provincial availability, the policy form, complete exclusions, or terms offered to a particular buyer; confirm those in the quote and policy documents..) | StartupInsurance.ai lists Builders Risk among seven lines in the homepage's "Physical risk, because AI outgrew software" section — Products Liability, Inland Marine, Tools and Equipment, Commercial Auto, Builders Risk, Surety and Property — offered alongside the core startup program of GL, cyber, D&O and related lines. [6](https://www.startupinsurance.ai/ "Startup Insurance | Coverage that clears the review") (Evidence: Company-reported; scope: Homepage "Physical risk, because AI outgrew software" section as read on 2026-09-23; the reviewed page names the line but does not describe project types, coverage period, or specific policy terms..) |
| Limits and Retentions | The cited public overview does not establish the limits, deductibles, exclusions or form terms that would apply to a specific buyer. [3](https://business.libertymutual.com/commercial-solutions/property/ "Property") [4](https://business.libertymutual.com/commercial-solutions/inland-marine/builders-risk "Builder’s risk") (Evidence: Not publicly disclosed; scope: Ask for the quote and specimen or issued policy forms before treating a listed feature as covered..) | The reviewed pages do not publish sample builders risk project-value limits, covered perils, or policy-period terms. [6](https://www.startupinsurance.ai/ "Startup Insurance | Coverage that clears the review") [7](https://quotes.startupinsurance.ai/ "Apply for Startup Insurance | StartupInsurance.ai") (Evidence: Not found in reviewed sources; scope: Homepage and quote-intake screen as read on 2026-09-23; limits would only surface on an actual quote..) |
| Risk Services | Liberty Mutual describes property underwriting, risk-engineering and claims teams working together on complex property risks. [3](https://business.libertymutual.com/commercial-solutions/property/ "Property") [4](https://business.libertymutual.com/commercial-solutions/inland-marine/builders-risk "Builder’s risk") (Evidence: Company-reported; scope: Liberty Mutual’s cited product or program overview documents this description. It does not establish the issuing insurer for an individual quote, exact state or provincial availability, the policy form, complete exclusions, or terms offered to a particular buyer; confirm those in the quote and policy documents..) | Confirm in your quote. |
| How to Apply | Confirm in your quote. | The physical-risk section's call to action reads "Ask about your insurance requirements →" rather than the "Get Quotes" button used elsewhere on the homepage, indicating builders risk is discussed with a specialist rather than quoted through a self-serve form. [6](https://www.startupinsurance.ai/ "Startup Insurance | Coverage that clears the review") (Evidence: Company-reported; scope: Homepage "Physical risk, because AI outgrew software" section as read on 2026-09-23; the page does not describe what that conversation covers..)<br><br>The public quote-application's coverage-selection screen offers seven checkboxes (D&O, Cyber, Tech E&O, EPL, Fiduciary, Crime and GL); Builders Risk is not one of them, so it is not part of that self-serve intake flow. [7](https://quotes.startupinsurance.ai/ "Apply for Startup Insurance | StartupInsurance.ai") (Evidence: Not found in reviewed sources; scope: Initial coverage-selection screen of the quote application as read on 2026-09-23; a later screen or specialist conversation could still address this line..) |

## Related Pages for Liberty Mutual vs StartupInsurance.ai Builders Risk

- [Liberty Mutual vs StartupInsurance.ai](https://spot.insure/compare/liberty-mutual-vs-startupinsurance): all coverage lines, business roles, service and claims.
- [What Is Builders Risk Insurance?](https://spot.insure/coverage/builders-risk): Builders risk insures a building and its materials against physical loss while it is under construction, but stored or in-transit materials, the existing structure in a renovation, and early occupancy can fall outside it.
- [Liberty Mutual vs StartupInsurance.ai Commercial Auto Insurance](https://spot.insure/compare/liberty-mutual-vs-startupinsurance/commercial-auto)
- [Liberty Mutual vs StartupInsurance.ai Commercial Property Insurance](https://spot.insure/compare/liberty-mutual-vs-startupinsurance/commercial-property)
- [Liberty Mutual vs StartupInsurance.ai D&O Insurance](https://spot.insure/compare/liberty-mutual-vs-startupinsurance/directors-officers)
- [Liberty Mutual vs StartupInsurance.ai Fiduciary Liability Insurance](https://spot.insure/compare/liberty-mutual-vs-startupinsurance/fiduciary)
- [Liberty Mutual vs StartupInsurance.ai General Liability Insurance](https://spot.insure/compare/liberty-mutual-vs-startupinsurance/general-liability)
- [Liberty Mutual vs StartupInsurance.ai Inland Marine Insurance](https://spot.insure/compare/liberty-mutual-vs-startupinsurance/inland-marine)
- [Liberty Mutual vs StartupInsurance.ai Surety Bonds](https://spot.insure/compare/liberty-mutual-vs-startupinsurance/surety-bonds)
- [Liberty Mutual vs StartupInsurance.ai Tech E&O Insurance](https://spot.insure/compare/liberty-mutual-vs-startupinsurance/technology-errors-omissions)
- [AIG vs Liberty Mutual Builders Risk Insurance](https://spot.insure/compare/aig-vs-liberty-mutual/builders-risk)
- [AIG vs StartupInsurance.ai Builders Risk Insurance](https://spot.insure/compare/aig-vs-startupinsurance/builders-risk)
- [Alliance Risk vs Liberty Mutual Builders Risk Insurance](https://spot.insure/compare/alliance-risk-vs-liberty-mutual/builders-risk)
- [Alliance Risk vs StartupInsurance.ai Builders Risk Insurance](https://spot.insure/compare/alliance-risk-vs-startupinsurance/builders-risk)
- [Aon vs Liberty Mutual Builders Risk Insurance](https://spot.insure/compare/aon-vs-liberty-mutual/builders-risk)
- [Aon vs StartupInsurance.ai Builders Risk Insurance](https://spot.insure/compare/aon-vs-startupinsurance/builders-risk)

## Sources for Liberty Mutual vs StartupInsurance.ai

### Sources About Liberty Mutual

1. [Company Profile](https://www.libertymutualgroup.com/about-lm/investor-relations/our-company/company-profile). Liberty Mutual Group; Strategic business units paragraph: US Retail Markets (individuals/small businesses; small commercial; countrywide) and Global Risk Solutions (mid-size/large businesses; commercial, specialty, reinsurance, surety; worldwide).. Accessed 2026-09-29.
2. [Commercial Insurance Solutions](https://business.libertymutual.com/commercial-solutions/). Liberty Mutual Business Insurance; Commercial solutions index names commercial auto and fleet, cyber, environmental liability, equipment breakdown, excess and surplus, general liability, healthcare liability, inland marine, management liability, multinational, ocean marine, professional liability, property, reinsurance, surety, umbrella/excess and workers compensation. Disclosure says policy insurer is named when offered, may be an affiliate/subsidiary or surplus-lines insurer; states/jurisdictions and actual policy terms vary.. Accessed 2026-09-29.
3. [Property](https://business.libertymutual.com/commercial-solutions/property/). Liberty Mutual Business Insurance; Property solutions section describes commercial property, business-interruption protection, Builder's Risk, Equipment Breakdown, Inland Marine and Ocean Marine; named Premier Property Protector, RM Select, and Liberty Mutual Property Protector product descriptions; states standalone and package options. Coverage terms depend on the policy.. Accessed 2026-09-29.
4. [Builder’s risk](https://business.libertymutual.com/commercial-solutions/inland-marine/builders-risk). Liberty Mutual Business Insurance; Official product page: single-project or portfolio scope; contractors and property owners; Premier Protector — Builder’s Risk and stand-alone Specialty Property offerings; covered materials, labor, construction management fees, temporary structures and landscaping materials. Source also describes project-specific program design, underwriting and claims support.. Accessed 2026-09-30.

### Sources About StartupInsurance.ai

5. [Company | Startup Insurance](https://www.startupinsurance.ai/company/). StartupInsurance.ai; The story; founders; The free policy check; legal footer. Accessed 2026-09-16.
6. [Startup Insurance | Coverage that clears the review](https://www.startupinsurance.ai/). StartupInsurance.ai; Carrier panel; Physical risk, because AI outgrew software (Products Liability · Inland Marine · Tools and Equipment · Commercial Auto · Builders Risk · Surety · Property; "Building robots, hardware, energy or defense tech?"). Accessed 2026-09-23.
7. [Apply for Startup Insurance | StartupInsurance.ai](https://quotes.startupinsurance.ai/). StartupInsurance.ai; Coverage-selection screen: seven checkboxes (D&O, Cyber, Tech E&O, EPL, Fiduciary, Crime, GL). Accessed 2026-09-23.
8. [Terms and Conditions](https://www.contractornerd.com/terms-and-conditions/). ContractorNerd; Section 2, Insurance Services: "ContractorNerd is an insurance agency/insurance producer... not an insurance company, does not underwrite insurance"; Section 2.A, Broker/Agent of Record. Accessed 2026-09-23.
9. [Insurance Licenses](https://www.contractornerd.com/insurance-licenses/). ContractorNerd; Company information: "a property and casualty independent insurance agency licensed in all 50 states"; 50-state licensing table for ContractorNerd Insurance Services, LLC. Accessed 2026-09-16.

### Sources for the Builders Risk Insurance Guide

10. [Glossary of Insurance Terms](https://content.naic.org/glossary-insurance-terms). National Association of Insurance Commissioners; Builders’ Risk Policies; Ocean Marine; Auto Physical Damage; All-Risk. Accessed 2026-09-16.
11. [Commercial Insurance Guide](https://www.insurance.ca.gov/01-consumers/105-type/95-guides/09-comm/commercialguide.cfm). California Department of Insurance; Commercial Property; Inland Marine; What Should I Expect from a Broker-Agent. Accessed 2026-09-16.
12. [Builders Risk Coverage Form](https://assets.touchpointmarkets.com/e8/58/dec27c1b462c8227b4693fb8ac81/ih-00-70-05-17-builders-risk-coverage-form.pdf). Insurance Services Office, Inc.; hosted by Touchpoint Markets; A.1–3 p.1; B.3.c p.11; C,D,E p.12. Accessed 2026-09-16.
13. [Builders Risk Application Tip Sheet](https://go.usassure.com/rs/381-ISO-510/images/us-assure-builders-risk-application-tip-sheet.pdf). US Assure; General policy application tips p.1; Remodeling tips p.2. Accessed 2026-09-16.

Updated 2026-09-30. Spot, a product of Tools for Enlightenment, publishes this research and works in the commercial insurance market. The comparison applies the same criteria to both providers. [Editorial policy](https://spot.insure/editorial-policy). To suggest a correction, [contact Spot](https://spot.insure/contact) with the page URL and supporting source.

## Liberty Mutual Review Scores for 2026

Review Score: 7.2 / 10 from 2 rated sources, equally weighted.

Customers give Liberty Mutual 4.2 out of 5 on Trustpilot from 3,836 reviews, but that page mixes auto, home and life customers with business ones. For business insurance specifically, NerdWallet gives 3.0 out of 5 and reports more complaints than expected.

- NerdWallet: NerdWallet editorial rating 3.0/5 (NerdWallet proprietary editorial score; not a consumer rating average or Spot Score). NerdWallet business-insurance editorial review, updated June 3, 2026. Its 3.0/5 is NerdWallet’s editorial score, not a consumer average or Spot Rating. It reports above-expected commercial-property and general-liability complaints for 2022–2024 and a low J.D. Power result. Period: Page updated June 3, 2026. Checked 2026-09-29. [Liberty Mutual Business Insurance Review 2026: Big Company Dogged by Customer Complaints](https://www.nerdwallet.com/business/insurance/learn/liberty-mutual-business-insurance)
- Trustpilot: Trustpilot consumer TrustScore 4.2/5 (Platform aggregate for a mixed Liberty Mutual brand profile; not business-only); 3836 reviews. Company-wide Liberty Mutual Trustpilot profile. Its description highlights auto, home and life insurance; review excerpts are not restricted to commercial buyers or one issuing entity. The displayed score/count are a consumer-review-site aggregate, separate from editorial ratings and survey data. Period: Displayed September 29, 2026; live total changes. Checked 2026-09-29. [Liberty Mutual Reviews](https://www.trustpilot.com/review/www.libertymutual.com)

Reviewed 2026-09-29. [Read the sourced review](https://spot.insure/insurance-providers/liberty-mutual/reviews).

## StartupInsurance.ai Review Scores for 2026

Review Score: not enough ratings.

StartupInsurance.ai has no public customer reviews or ratings that we found, so there is no Review Score. That isn't a bad sign, just not enough to judge.



Reviewed 2026-09-29. [Read the sourced review](https://spot.insure/insurance-providers/startupinsurance/reviews).

## Agent and Developer Resources

- [Markdown page](https://spot.insure/compare/liberty-mutual-vs-startupinsurance/builders-risk.md)
- [Developer resources](https://spot.insure/developers)
- [Public MCP server](https://spot.insure/mcp)
- [MCP server manifest](https://spot.insure/server.json)
- [OpenAPI description](https://spot.insure/openapi.json)
- [Public page index](https://spot.insure/llms.txt)