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Greta.Agency

Build a marketplace
for B2B.

Built for B2B companies and business-to-business service providers.

We build marketplace platforms with listings, roles, payments, and admin tools built in.

Launch both sides of the marketBuilt-in platform fee logicReady to scale listings and users4–10 weeks
The problem

Why B2B companies struggle with this.

1

Sales CRMs that don't map to how B2B deals actually progress and close

2

No clean way to handle account hierarchies, buying committees, and multi-year contracts

3

Reporting for customers that requires manual work every billing cycle

4

Onboarding workflows for new clients that rely on email and spreadsheets

The solution

How we build it
for B2B.

B2B software needs to handle team-based access, complex pricing models, enterprise integrations, and reporting that shows value to decision-makers. Generic tools rarely satisfy all of these requirements simultaneously.

B2B products serve buyers who are more sophisticated, have longer decision cycles, and expect software that fits complex organizational workflows. The bar for reliability, reporting, and integration is higher than in consumer products.

Purpose-built for two-sided dynamics — not a generic CRUD app

Marketplace payments including platform fee logic and seller payouts

Built to validate your model before investing in a large engineering team

Industry context built in — not bolted on

Deliverables

What you get.

01

Two-sided marketplace with buyer and seller flows

02

Listings system with categories, filters, and search

03

Payments with platform fee and payout logic

04

Seller dashboard for managing listings and orders

05

Admin panel for platform operations and moderation

Use cases

What B2B companies
build with us.

B2B sales and CRM tools

Build pipeline management, account tracking, and deal-closing tools for B2B sales teams.

Customer success platforms

Create tools for tracking customer health, managing renewals, and running QBR workflows.

Client reporting portals

Build portals where B2B customers can log in to see usage data, invoices, and account reports.

Process

How we work.

01

Define the platform model

Map your buyers, sellers, listing types, and transaction or payout logic.

02

Structure the experience

Design discovery, listing creation, transaction, and admin flows.

03

Build the core system

Ship listings, roles, payments, and the marketplace operations layer.

04

Launch and validate

Go live, attract first users on both sides, and validate supply-demand fit.

Ready to build a marketplace for B2B?

Typical timeline: 4–10 weeks

About this service

What is Build a Marketplace for B2B?

Build a Marketplace for B2B means building a marketplace specifically designed around the workflows, compliance expectations, and user needs of B2B companies and business-to-business service providers. Unlike generic software or off-the-shelf tools, a custom-built solution gives your team full control over features, data, and the product roadmap — without paying for capabilities you don't need or working around limitations that slow you down.

B2B products serve buyers who are more sophisticated, have longer decision cycles, and expect software that fits complex organizational workflows. The bar for reliability, reporting, and integration is higher than in consumer products.

Why B2B companies need custom build a marketplace

B2B software needs to handle team-based access, complex pricing models, enterprise integrations, and reporting that shows value to decision-makers. Generic tools rarely satisfy all of these requirements simultaneously.

Most B2B teams start with generic tools because they're fast to deploy. But as the business grows, those tools create friction — missing the specific logic, integrations, and workflows that B2B operations actually need. A custom-built product eliminates that friction permanently.

How long does it take to build?

B2B tools can ship in 4–8 weeks. Full platforms with customer portals, CRM, and reporting take 8–14 weeks. The timeline depends on scope, the number of user types, and the depth of integrations with existing B2B systems. A well-scoped project with clear requirements moves significantly faster than one that evolves through the build. We scope tightly before starting so timelines stay predictable.

What does it cost?

B2B platform builds typically range from $8k–$35k depending on CRM complexity, customer-facing portal requirements, and integration with billing systems. The biggest cost drivers are integration complexity, the number of distinct user roles, and whether the product needs to handle regulated data or compliance workflows. We provide a clear scope and fixed-price quote before any work begins.

Custom build vs. off-the-shelf tools

Off-the-shelf tools work well for standard use cases. But B2B companies often have requirements that generic SaaS tools weren't built for: sales crms that don't map to how b2b deals actually progress and close, no clean way to handle account hierarchies, buying committees, and multi-year contracts, or workflows that don't fit the assumptions baked into general-purpose platforms.

A custom-built product gives you:

  • Full ownership — no per-seat fees or platform lock-in
  • Workflows built exactly for how B2B teams operate
  • Integrations with the tools and data sources you already use
  • A foundation you can extend as your product and team grow

The right time to build custom is when generic tools are creating real friction, costing more in workarounds than a custom build would cost, or blocking product-critical workflows that your B2B business depends on.

Start your project

Ready to build
for B2B?

We build marketplace platforms with listings, roles, payments, and admin tools built in. Scoped for B2B companies and business-to-business service providers.