Switching web vendors? Here's what you need to know

If you’re a leader at a brokerage firm, you’ve probably had the following conversation:

“We need a new website partner.”
“Cool. Are we redesigning, migrating, or both?”
“Huh? What’s the difference?”

Don’t worry, it’s totally normal and it’s exactly how vendor switches go sideways.

Because switching web vendors isn’t just “getting a prettier site” – It’s lead flow, SEO equity, analytics continuity, security posture, MLS and IDX realities, and the day-to-day sanity of the people who have to update the site every week.

And just to level set: all of this assumes your website traffic is a business asset you actually care about protecting – because if organic traffic and brand visibility don’t matter to you, your risk calculations may look completely different.

Either way, this guide is written for the marketing lead and IT partner duo who have to make this tough call together. It’s practical, slightly paranoid (in a good way), and designed to help you run a clean evaluation, issue a solid RFP, and avoid the high-risk misses: SEO migration, analytics loss, and access and security gaps.

Why companies switch web vendors (and where projects go wrong)

Brokerages usually switch web vendors for one of the following reasons:

• The site feels dated and conversion is slipping
• Updates take forever or require a developer for everything
• Their current partner isn’t proactive, strategic, or responsive
• Performance and Core Web Vitals are weak, especially on mobile
• The CMS is painful, the hosting is shaky, or security is a question mark
• They’re finally ready to modernize integrations (CRM, lead routing, analytics, listings, careers, etc.)

All good reasons. It’s usually when teams underestimate what’s actually being changed that the project goes off the rails.

Three anonymous-but-real “bad switch” stories you’ll recognize:

• The SEO cliff: the new agency launched without a complete redirect map, so hundreds (sometimes thousands) of indexed URLs became 404s, and organic traffic slid for weeks
• The analytics blackout: GA4 and GTM weren’t implemented correctly (or at all) at launch, so leadership lost visibility right when they needed it most
• The access mess: nobody could answer “who owns what” (domains, DNS, hosting, Search Console, tag manager, CMS admin), so the handoff dragged on and security risk piled up

Google is pretty explicit that site moves and URL changes require planning (including URL mapping and validation) if you want to minimize search impact. And even a simple hosting move needs careful monitoring to avoid performance and availability issues.

A vendor switch is the perfect time to sanity-check your follow-up workflow, routing rules, and speed-to-lead expectations, so you don’t rebuild a site on top of a shaky lead process.

Red flags you’re outgrowing your current partner

You don’t need a dramatic blow-up to justify a switch. These are the quieter signals that your current setup is costing you money.

You’re trapped in a “ticket-only” website

If marketing can’t publish a new page, swap a hero, or update a team roster without dev support, the website stops being a growth channel and starts being a bottleneck.

Reporting feels fuzzy, inconsistent, or unverifiable

If you can’t answer basic questions like “Which pages drive lead submissions?” or “What’s the conversion rate on listing detail pages vs neighborhood pages?” you’re operating on vibes.

Small changes create outsized risk

A healthy website stack has clear environments, version control, QA, and rollback. If every update feels like it might break something, the problem isn’t your team – it’s the operating model.

Ownership is unclear

If you don’t know who controls DNS, certificates, CMS admin, Search Console, GA4, GTM, hosting, and backups, you’re one surprise invoice away from a bad day.

“Vendor switch” vs. “platform and CMS migration”

Before you evaluate a vendor, get aligned on what you’re actually doing. These three scenarios look similar from 30,000 feet, but the risk profile changes a lot.

1) Vendor switch (same CMS and hosting)

Lowest risk: You’re essentially swapping the team that maintains and improves the site. Still requires a clean handoff and documentation.

2) Vendor switch (same CMS, but with new hosting or infrastructure)

Moderate risk. Hosting moves can be SEO-neutral in theory, but performance, uptime, and configuration mistakes can absolutely hurt you in practice – so you plan, test, and monitor.

3) New vendor and new CMS (true migration)

Highest risk: This is where teams lose SEO equity, break tracking, and launch with content gaps.

If URLs change, Google recommends permanent server-side redirects (301 or 308) and a mapped, validated approach. That means your vendor should be fluent in migrations, not learning live on your domain.

Switching web vendors: your evaluation checklist

Here’s a checklist you can actually score. Think of it as two layers:

• Pass / fail gates (if they fail, you don’t proceed)
• Weighted criteria (to compare otherwise-qualified vendors)

A one-page vendor scorecard example

Pass / fail gates (the non-negotiables)

• Provides a migration plan that includes a redirect strategy and testing process
• Documents GA4 and GTM continuity plan (events, conversions, consent, domains)
• Commits to accessibility checks as part of QA (at minimum, a defined standard and workflow)
• Provides a security testing approach aligned to a recognized guide (ex. OWASP WSTG)
• Can clearly state how credentials, admin access, and handoff will work at the end

You can tweak weights, but for brokerages you should rarely put SEO and analytics below 25% – that’s your pipeline visibility.

Discovery and strategy

A good vendor won’t start with design comps – they’ll start with questions like:

• What’s the site’s job? (i.e. recruiting agents, driving buyer and seller leads, supporting relocation, showcasing luxury, promoting new construction)
• Who are the primary audiences, and what do they need on page one of their journey?
• What content is stale, missing, or underperforming?
• How should information architecture support how people actually browse real estate (and how Google crawls it)?

What you’ll want to see:

• A discovery plan with workshops and outputs (messaging, sitemap, page templates, analytics plan)
• A clear approach to content ownership (who writes, who migrates, who QA’s)
• A conversion plan that respects brokerage realities (multiple offices, teams, service lines, recruiting)

Technical fit

Brokerage websites are rarely “just a website.” The vendor needs to understand (or quickly learn) your ecosystem. Be sure to assess them on:

• CMS capability (and whether your team can self-serve)
• CRM and lead routing integration approach
• Listings and search integration realities (and what is in their control vs. your IDX provider’s control)
• Performance approach (especially mobile)
• Accessibility process and accountability (not just a checkbox)

If they can’t explain their staging, QA, and deployment workflow in plain language, run.

That’s a huge red flag. 🚩

SEO and analytics continuity

This is where you protect what you’ve already earned. Because in the real world, we’ve seen countless website migrations end in an 80-90% drop in traffic – meaning years of hard-earned SEO equity can basically vanish overnight.

At minimum, your vendor should propose the following

• Pre-launch benchmarks (rankings, organic landing pages, top converting pages)
• A URL inventory and redirect map (old to new)
• Redirect testing before launch, then validation after launch (crawl errors, coverage, indexing)
• A plan to preserve metadata, canonicals, internal linking, and sitemaps
• GA4 and GTM continuity (events, conversions, consent, cross-domain if needed)

Mini migration example (what “good” looks like):

• Old URL → New URL mapping examples:
  
  • /neighborhoods/downtown → /areas/downtown
  • /agents/j-santos → /agents/jordan-santos
  • /homes-for-sale/123-main-st → /listing/123-main-st
    
    
• Redirect approach:

• Use permanent server-side redirects (301 or 308) for URL changes
• Validate redirect chains (avoid multiple hops)
• Crawl the old site list against the new site staging list before launch
  
  

• Post-launch monitoring list:

• Google Search Console coverage and crawl errors
• Spot-check top landing pages and top converting pages
• Monitor rankings and organic traffic for high-value queries
• Check page speed and key templates on mobile
• Verify GA4 conversions match expected volumes

If a vendor shrugs at any of this, don’t let them “learn with your site.”

If you want a quick refresher on what matters most before a migration, our guide on real estate SEO breaks down the fundamentals and the technical fixes that tend to move the needle for brokerages

Security and compliance

You’re not only evaluating craftsmanship – you’re evaluating supply chain risk.

According to NIST’s framing, doing your due diligence is simple: you should have a baseline understanding of a supplier and their risk before you put them in your stack.

Ask them about:

• How they handle credentials and admin access (least privilege, role-based access)
• How they store secrets and manage environments
• Their approach to security testing (OWASP WSTG is a credible reference point)
• Incident response basics (who do you call, what happens first)
• Data handling if forms, chat, or lead capture are involved

Delivery reality

This is where you separate “good sales deck” from “good partner.” Here’s what to look for:

• An existing delivery team, not just “we’ll staff it later”
• A QA checklist that includes functional, SEO, analytics, and accessibility checks
• Documentation and a training plan so your team can run the site
• A realistic timeline with dependencies called out (content is always the sleeper issue)

What to ask in an RFP (so proposals are comparable)

If you want comparable proposals, your RFP needs to force clarity.

Guides, such as the following one by Clutch, all arrive at the same conclusion: define your goals, scope, constraints, and evaluation criteria so you don’t get vague, apples-to-oranges responses.

Scope boundaries, assumptions, and ownership

Include questions around:

• What’s included vs excluded (content writing, photography, SEO, integrations)
• Who owns IA, copy, design system, dev, and QA
• What you expect for training and documentation
• Who owns redirect mapping and validation
• Who owns analytics and tag management setup

• Who owns domains and DNS changes
• Who provisions hosting and certificates
• Who holds admin access to CMS, Search Console, GA4, GTM

Pricing models and what “support” really includes

Force clarity on:

• Fixed fee vs retainer vs time and materials
• What post-launch support includes (hours, response times, monitoring)
• How change requests work and how they’re priced
• What happens if timelines slip due to dependencies (often content)

Proof to request before you sign

You’re not being difficult, you’re being professional. So be sure to ask for:

• Comparable case studies and reference calls you can verify (and actually call them – because a polished case study won’t tell you what happened the week after launch!)
• Sample deliverables: sitemap, technical spec excerpt, QA checklist, launch plan
• Example of a redirect map and how they test it
• Example of a GA4 and GTM continuity plan

Reference questions that actually reveal risk

• What broke at launch, and how did they respond?
• Did they hit timelines, and if not, why?
• Did SEO dip, and what did they do about it? (and more specifically, what happened to your website traffic in the 2-8 weeks after launch?)
• Was reporting and communication consistent?
• Would you hire them again, and what would you do differently?

Contract terms that prevent pain later

IP ownership, portability, credentials, and handoff requirements

Make sure your contract spells out:

• You own your designs, code, content, and data
• Credentials are stored in your password manager, not theirs
• Admin access is shared appropriately, not held hostage
• You get a documented handoff (environments, deployments, integrations)

SLAs, change requests, and what happens after launch

The “after launch” period is where disappointment happens. Define the following:

• Response time targets for critical issues
• Uptime and monitoring expectations (if they manage hosting)
• A clear change request process
• Regular check-ins for the first 30 days post-launch

Transition plan: the first 30/60/90 days

If you want a smooth switch, treat it like a transition, not an event.

First 30 days: stabilize and inventory

• Confirm ownership and access to every system
• Freeze non-essential changes while you baseline performance
• Inventory URLs, templates, conversions, and integrations
• Agree on the measurement plan (what defines success)

60 days: build and validate

• Finalize IA, page templates, and content plan
• Implement analytics and conversion tracking early (not at the end)
• Build the redirect map and test it on staging
• Run QA with real scenarios (forms, recruiting, office pages, lead routing)

90 days: cutover and monitor

• Launch with a defined cutover checklist
• Validate redirects, indexing, analytics, and performance immediately after launch
• Monitor your Search Console, rankings, crawl errors, and conversions every week for at least a month
• Document everything and train any internal owners

The goal isn’t a “new site,” it’s a lower-risk growth engine

Switching web vendors is one of those projects that looks straightforward until you’re in the details. But if you run a scorecard, force comparable RFP responses, protect SEO and analytics, and lock in ownership and SLAs, you can switch partners without losing momentum.

And if you take nothing else from this blog, take this: treat traffic like the asset it is, and don’t gamble years of equity on a vendor you haven’t pressure-tested.

If you want a simple next step, take the scorecard above and use it to shortlist two to four vendors – then issue an RFP that makes them show their work.

Regardless of where you are on your vendor journey, Roof AI can help you get more out of the traffic you’re already paying for – book a demo to see how lead qualification and appointment booking can run automatically.