How to Build an Agency CRM App with Bubble

Agencies lose revenue tracking client work across email, spreadsheets, and disconnected project tools. A purpose-built agency CRM fixes that. Bubble lets you build one without writing backend code, keeping every client, project, and invoice in one place.

Key Takeaways

• Custom data model: An agency CRM on Bubble structures Clients, Projects, Proposals, Retainers, Invoices, and activity logs as linked data types.
• Proposal workflows: You can build a proposal builder with e-sign integration and retainer billing directly inside Bubble.
• Payment tracking: Stripe connects natively to Bubble for invoice generation, payment links, and overdue alerts.
• Cost range: An MVP agency CRM on Bubble typically runs $15,000 to $25,000; full builds reach $32,000 to $50,000.
• Limitations exist: Native time tracking, deep accounting integration, and profitability reporting require third-party plugins or workarounds.

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What Data Architecture Does an Agency CRM Need?

A well-structured data model is the foundation of any agency CRM on Bubble. Core types include Client, Project, Contact, Proposal, Retainer, Invoice, and ActivityLog, each linked by unique IDs.

Build the data layer before any UI. Agency CRMs carry relationships between clients, projects, and billing records that break badly if added later.

• Client type: Stores company name, industry, account owner, and linked contacts for every client record.
• Project type: Links to Client, holds status, assigned team members, deadlines, and deliverable records.
• Contact type: Stores individual names, roles, email, and phone, linked to a parent Client record.
• Proposal type: Links to Client and Contact, holds line items, total value, status, and e-sign timestamp.
• Retainer type: Links to Client and Proposal, stores monthly amount, billing cycle, and renewal date.
• Invoice type: Links to Project or Retainer, holds amount, due date, payment status, and Stripe reference.
• ActivityLog type: Records user actions against any Client or Project for audit and timeline views.

Check Bubble app examples to see how production apps structure complex relational data in Bubble before committing to your schema.

How Do You Build Client and Project Management?

Client and project management in a Bubble agency CRM means linked records, filtered views, and team assignment, all driven by Bubble's database and repeating groups.

Start with a client directory page. Each client record opens a detail page showing linked contacts, active projects, and recent activity pulled from the ActivityLog type.

• Client profiles: Store name, industry, contract start date, account owner, and a notes field per client.
• Project records: Each project links to a client, carries a status field, and holds a list of team members.
• Status workflow: Use Bubble workflows to move projects through Draft, Active, Review, and Complete stages.
• Team assignment: Link User records to Project via a list field so multiple team members appear on one project.
• Deliverable tracking: Create a Deliverable type linked to Project with a checkbox field and due date per item.

A filtered repeating group on the projects page lets account managers see only their assigned work, reducing noise for larger agency teams.

How Do You Build Proposal and Retainer Workflows?

Proposal and retainer workflows let an agency create, send, and track agreements without leaving the CRM. Bubble handles the UI, logic, and status updates through connected workflows.

Build a proposal creation page with dynamic line item input. Each line item stores description, quantity, and rate, totaling automatically via Bubble's expression engine.

• Proposal builder: A repeating group of line items with add and remove buttons calculates totals in real time.
• Send for e-sign: Integrate HelloSign or Docusign via API connector to send proposals directly from Bubble.
• E-sign status: A webhook from the e-sign provider updates the Proposal record status to Signed automatically.
• Retainer creation: On proposal signing, a workflow creates a linked Retainer record with amount and billing cycle.
• Renewal alerts: A scheduled API workflow checks renewal dates and sends email alerts before the retainer lapses.

Once retainers are active, the billing dashboard shows each client's monthly recurring value and next invoice date at a glance.

How Do You Build Billing and Invoice Tracking?

Billing and invoice tracking in an agency CRM connects retainer or project records to Stripe, generates invoices automatically, and surfaces overdue accounts on a revenue dashboard.

Create an invoice generation workflow triggered by retainer billing cycles or manual project completion. Each invoice stores amount, due date, and Stripe payment intent ID.

• Invoice creation: A workflow creates an Invoice record from a Retainer or Project and sets a due date automatically.
• Stripe payment link: Use the Stripe plugin to generate a hosted payment link attached to each Invoice record.
• Payment confirmation: A Stripe webhook marks the Invoice as Paid and logs the transaction in ActivityLog.
• Overdue alerts: A scheduled workflow checks Invoice due dates daily and triggers email reminders for unpaid records.
• Revenue dashboard: Aggregate Invoice records by month and status to display MRR, collected, and outstanding totals.

Review Bubble's security model before connecting Stripe. Payment data requires correct privacy rules on Invoice and Client types to prevent data leaks.

How Much Does It Cost to Build an Agency CRM on Bubble?

An MVP agency CRM on Bubble runs $15,000 to $25,000. A full build with proposal workflows, retainer billing, and reporting reaches $32,000 to $50,000.

Review Bubble pricing plans to understand hosting costs before scoping your build. Plan tier affects database capacity and workflow run limits.

• MVP scope: Covers client directory, project tracking, basic invoicing, and team assignment in one app.
• Full scope: Adds proposal builder, e-sign integration, retainer automation, Stripe billing, and reporting dashboards.
• Hosting cost: Production plans on Bubble start at $349 per month for dedicated server capacity.
• Plugin costs: E-sign API access and Stripe usage fees add to monthly operating costs beyond Bubble hosting.

Timeline for an MVP runs eight to twelve weeks. A full build typically takes sixteen to twenty-four weeks depending on integration complexity.

What Are the Limitations of Building an Agency CRM on Bubble?

Bubble handles most agency CRM needs well, but three areas require honest evaluation before committing to the platform for a full build.

Understand Bubble's capabilities and limitations before designing features that push against the platform's native constraints.

• Native time tracking: Bubble has no built-in timer. Accurate time tracking requires a plugin or external tool like Toggl via API.
• Project profitability reporting: Calculating billable versus actual hours against project cost requires custom logic that can slow Bubble's query engine.
• Deep accounting integration: QuickBooks and Xero integrations are possible via API but need careful mapping and error handling to stay reliable.
• Scalability ceiling: Bubble's scalability ceiling becomes relevant when agency databases exceed tens of thousands of records with complex queries.
• Platform trade-offs: Review Bubble pros and cons and Bubble alternatives if accounting depth or reporting complexity are top priorities for your CRM.

For most agencies under 200 active clients, Bubble performs well without hitting these limits in daily operations.

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Hire a Bubble team that’s done it all—CRMs, marketplaces, internal tools, and more

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Want to Build an Agency CRM on Bubble?

Building an agency CRM from scratch on Bubble is achievable, but architecture decisions made early determine whether the platform holds up at scale.

At LowCode Agency, we build agency CRMs on Bubble covering client management, proposal workflows, retainer billing, invoicing, and reporting as one complete platform.

• Data architecture: Relational schema design across Client, Project, Retainer, Invoice, and ActivityLog types built for scale.
• Proposal and e-sign workflows: Proposal builder with line items, e-sign API integration, and automated retainer creation on signing.
• Billing automation: Stripe payment links, retainer billing cycles, overdue alerts, and a live revenue dashboard.
• Admin tooling: Internal dashboards for account managers showing client health, overdue invoices, and project status.

We have delivered 350+ products for clients including Coca-Cola and American Express. Bubble development services cover agency CRM builds from architecture through launch; most engagements start around $15,000 USD.

If you are serious about building an agency CRM on Bubble, let's build your platform properly.