How to Use Custom Fields in Your CRM to Match Your Agency's Workflow
Every CRM ships with standard fields — name, email, phone, address. Those work fine if you run a generic business. But if you're an agency, a trade firm, or anything with a specific workflow, you know what's missing: the actual questions you ask, the details that drive your decisions, and the data that makes your business uniquely yours.
That's where custom fields come in. Custom fields let you adapt your CRM to match your agency's workflow without rebuilding the whole system. They're one of the most underused features in any CRM — and also one of the most powerful. Used properly, they turn a generic tool into something that feels like it was built specifically for you.
What custom fields actually are
A custom field is a data point you add to any record type in your CRM. Your standard contact record has name, email, phone. A custom field adds something else: "acquisition source" (how they found you), "communication preference" (text or email), "landlord type" (single property or portfolio).
Custom fields work on any record — contacts, properties, tenancies, maintenance jobs, deals. They can be text, dropdowns, dates, checkboxes, numbers, or multi-select options. The point is simple: you capture the data your agency actually uses to make decisions, not just the data someone at the CRM company thought might be universally useful.
When you actually need custom fields
Custom fields are worth adding when you're capturing information that isn't covered by standard fields, and that information changes how you work. Not every idea warrants a custom field. But some absolutely do.
For contacts — landlord type (accidental vs. portfolio owner), preferred contact time (some only take calls after 5pm), tax reference for financial reporting, or pet policy. These aren't niche — they're the questions that come up in every intake conversation.
For properties — parking (yes, no, shared), garden status, furnished level (unfurnished, part-furnished, fully furnished), or council tax band. These matter when you're matching applicants to properties. A furnished-property seeker and an unfurnished-property seeker are different customers.
For tenancies — break clause date, rent review date, permitted occupants, or special conditions. This is the operational data that keeps your lettings running smoothly.
For maintenance requests — whether landlord approval was needed, cost band, tenant satisfaction rating, or whether it's a repeat issue. This data drives contractor management and quality tracking.
The common thread: if you ask about it in your standard workflow, it's probably worth capturing.
How to design custom fields without drowning in them
The temptation is real: every time someone thinks of a useful data point, you add a custom field. Six months later, your contact record has 40 fields and nobody's filling them out because the form is too long (and confusing, and annoying).
Resist this. Every custom field adds friction.
Start with the questions you're already asking. Review your intake forms, your standard discovery calls, your reporting needs. The fields that matter will be obvious — they're the ones that come up repeatedly.
Use dropdowns and checkboxes, not free text. A dropdown with "Referral / Portal / Website / Walk-in / Networking" is infinitely more useful than a free-text field where one agent writes "ref from john," another writes "found us online," and a third writes "walked past the office." Structured data filters cleanly. Free text does not.
Keep the list tight. Aim for five to ten custom fields per record type. Real fields, the ones that inform decisions. You can add more later if you genuinely need them.
Prune annually. A custom field that was useful three years ago might not be anymore. Review them once a year and archive the dead weight. This keeps the interface clean and your data honest.
Using custom fields for segmentation
Here's where custom fields earn their place. If your landlord records include a "landlord type" field, you can instantly filter to overseas owners and send them targeted guidance on managing properties abroad. If your applicant records include "budget range" and "pet owner," you can match them to the right properties in seconds.
This isn't possible without structured custom data. Spreadsheets don't do this. Post-it notes don't do this. Only a proper CRM with custom fields captures the information you need to segment your database in real time.
And segmentation drives better business decisions — you know which types of landlords generate the most instructions, which communication channels work best for different customer groups, which properties have the highest tenant satisfaction.
Custom fields and reporting
Custom fields feed directly into your CRM's reporting. If you track "acquisition source," you'll see which channels generate the most instructions. If you track "contractor satisfaction," you'll identify your best and worst maintenance partners.
Good reporting reveals patterns. If networking events generate twice as many instructions as portal advertising, you know where to spend your time. If a contractor consistently gets poor ratings, you move on.
You need CRM reporting to spot trends. You need custom fields to make that reporting meaningful.
Real-world examples
Here are the custom fields that letting agencies and property management businesses actually implement:
| Record | Field | Why it matters |
|---|---|---|
| Landlord | Acquisition source | Track which marketing channels work |
| Landlord | Fee tier | Revenue analysis and segmentation |
| Landlord | Communication preference | Respect how they want to be contacted |
| Property | Furnished status | Match applicants to the right properties |
| Property | Parking | Key feature for applicant matching |
| Property | Council tax band | Marketing info and financial planning |
| Tenancy | Break clause date | Plan for lease renewals |
| Applicant | Budget range | Quick property matching |
| Maintenance | Landlord authorised | Workflow control and audit trail |
Each one captures something specific that your agency needs. Together, they make your CRM work like your business, not against it.
Custom fields in practice: Trade businesses and recruiters
Agencies aren't alone. If you run a trade business, custom fields might capture job type, customer preference for morning vs. afternoon visits, or whether they're a repeat customer. If you're in professional services, you might track project type, client industry, or engagement value.
Even recruiters use custom fields heavily — candidate skill tags, placement fee tier, whether they're available immediately or notice-dependent. The principle is the same: capture what matters to your business.
When you choose your first CRM, custom field flexibility should be on your checklist. A CRM that makes it hard to add fields is a CRM that won't grow with you.
Frequently Asked Questions
Can I add custom fields after setup, or do I need to plan them all upfront? You can add them anytime. Start with what you know you need (five to ten fields), then add more as your workflow becomes clearer. The mistake is planning for fields you might need someday. Stick to fields that solve today's problems.
What happens if we change our mind about a custom field? Most CRMs let you hide (archive) fields without deleting data. If you added a field and stopped using it three years ago, archive it rather than delete it. The historical data stays intact if you ever need it.
Do custom fields slow down the CRM? No, not materially. A CRM with 50 custom fields performs the same as one with five. The slowdown comes from data entry — if your form is cluttered, people work slower. This is another reason to keep the field count tight.
Can I make some custom fields required and others optional? Yes. Required fields force data entry (useful for critical info like "acquisition source"). Optional fields let users populate them if relevant. Use "required" sparingly — every required field adds friction to data entry.
How do I ensure custom fields actually get filled out? Make them relevant to the agent's actual workflow. If a custom field matters only to you and never to the person entering data, it won't get populated. Test fields with a small team first, gather feedback, then roll out. And keep your onboarding clear — agents need to understand why they're filling in a field, not just what it is.
Can I use custom fields for automation? Yes. Many CRMs let you build workflows triggered by custom field values — "if landlord type = overseas, send them the non-resident owner guide." This is where custom fields become powerful beyond reporting.
What's the difference between a custom field and a note? A note is free text and can't be analysed. A custom field is structured, queryable, and reportable. Notes are for context. Custom fields are for data you want to track, filter, and report on.
If we switch CRMs, do we lose our custom field data? Usually not. Most migrations preserve custom field data (though the mapping can be finicky — your migration partner will handle this). But this is a good reason to keep your custom fields well-documented and tidy.
Building a CRM that matches your workflow
Your business doesn't work like every other business. Your custom fields shouldn't either. The Relentify CRM lets you add fields that match how you actually work, without building everything from scratch. You get a system that captures your data, feeds your reporting, and drives your decisions.
Start with the fields that matter most. Build from there. A thoughtfully designed set of custom fields is the difference between a CRM that's useful and a CRM that's just another piece of software taking up screen space.