Sierra Interactive vs Follow Up Boss: Cost and Fit in 2027

The short answer: a bundle or a CRM you pair with a website

Sierra Interactive and Follow Up Boss are not two versions of the same tool. Sierra sells a website, lead capture and a CRM as one package on 12-month agreements, so you are buying a stack. Follow Up Boss sells the CRM by itself and expects you to bring your own website, so you are buying one layer. A CRM is the system that stores each lead, its notes and its follow-up tasks, while an all-in-one platform also builds the site and capture forms that feed it.

Follow Up Boss is not independent of a large portal. Zillow deal: $400 million upfront plus up to $100 million earnout according to Zillow Group (2023). Follow Up Boss's announcement post says the deal closed on December 8, 2023, and that it "will remain an independent brand and a standalone product." Sierra has a different owner: ASG, an Alpine Investors portfolio company, announced its acquisition of Sierra on October 13, 2022, according to Alpine Investors (2022).

If you need the website and IDX search included and can sign for a year, Sierra is the more complete purchase. If you already have a site provider and want a CRM you can try on a 14-day free trial with no contract, Follow Up Boss is the simpler purchase. Most of the decision comes down to headcount and whether you already own the website.

Key Takeaways

• Choose Sierra Interactive if you want the website, lead capture and CRM from one vendor and can accept a 12-month agreement. Expect the full stack to cost more than a CRM line item.

• Choose Follow Up Boss if you already have a website provider and want a CRM with calling, texting and automations that you can trial before paying.

• Headcount decides the price order. At five users, Follow Up Boss's annual prices sit below Sierra's, but Follow Up Boss's figures exclude a website that Sierra's include.

• Zillow owns Follow Up Boss and ASG, an Alpine Investors company, owns Sierra. Get data-ownership and exit terms in writing from either vendor.

• Both vendors publish comparison claims about each other. Sierra's comparison page is a sales document, so verify each claim you plan to rely on.

• Neither pricing page lists a quote-based tier, so the figures here are list prices, not negotiated ones.

Who this is for

Sierra Interactive suits an owner or operations lead who wants one vendor for the site, the lead capture and the CRM, has a settled team size, and can commit for a year. Sierra's packages are sized by team: the Starter package is for solo agents and small teams, Essential for evolving teams and Growth for fast-moving teams who need it all, according to its own pricing page.

Follow Up Boss suits an owner who already runs a site or uses a site provider and wants a CRM with calling, texting and action plans, plus a trial period before paying. It also suits a team that expects to add users in steps, because its per-user pricing on the Grow plan scales with headcount.

Red flags: if you cannot accept a 12-month commitment, Sierra's bundle is hard to justify; if you already have a website you plan to keep, paying for Sierra's site adds cost without adding value; if you need a website and IDX search from day one, Follow Up Boss alone will not cover it.

How we evaluated these two tools

We weighted seven criteria by how much each one changes the purchase for a small team. The weights are our judgment for this decision, not a market study. The facts under each criterion come from vendor pricing pages, ownership announcements, a review site and trade press, and vendor claims are labelled as claims. This guide uses public information only; we did not run either product.

The weights add to 100%. Ownership and integrations carry less weight than cost and scope because both vendors are stable enough to buy from; the decision turns on what you pay for and what you get in the box.

Who owns each product, and what that means

Zillow's own announcement said Follow Up Boss would keep operating as its own brand, and Real Estate News reported that Follow Up Boss had roughly 100,000 users at the time of the deal. Users: roughly 100,000 at the 2023 deal according to Real Estate News (2023). Zillow's Errol Samuelson told the same outlet that users keep ownership of the data they enter, "it's your data and it belongs to you." That is a policy statement from the buyer, so write it into your contract as a term rather than relying on the quote.

Sierra's own comparison page describes Follow Up Boss as "Owned by Zillow," and it presents that ownership as a reason to consider its independence. Whether you weigh that depends on your data concerns. Sierra's ownership announcement from 2022 did not say whether Sierra would run independently or how its brand and operations would change, so ask Sierra directly how it handles data exports and changes of control before you sign.

The practical result is that both products have stable parents, and neither ownership change should decide your purchase on its own. What matters more is the contract: term length, what happens to your data at exit, and whether the integration you rely on can change without notice.

Feature matrix

The matrix below separates facts from vendor claims. Where a cell rests on one vendor's own comparison page, the claim is labelled.

The matrix shows the split clearly. Sierra wins on scope: it includes a site and lead capture that Follow Up Boss leaves to you. Follow Up Boss wins on contract flexibility and on the breadth of its integration ecosystem, as Sierra's own page concedes. On automation, the claims conflict. Sierra says Follow Up Boss automations are "linear and basic," while Follow Up Boss sells Action Plans and AI features on its paid tiers. Test the automation you need on Follow Up Boss's trial before you accept either description.

Sierra's two-way integration with Follow Up Boss is worth noting. Per Follow Up Boss's integration page, lead activity from Sierra pushes into Follow Up Boss in real time, and tags and agent assignments sync in both directions. That means the two products can work together, which changes the choice from either/or into a question of which system owns the site.

Pricing and total cost

Pricing checked October 25, 2026. Sierra's figures in the table are according to Sierra Interactive, and Follow Up Boss's are according to Follow Up Boss. Neither pricing page lists a quote-based tier.

Three figures on Sierra's page change the total. The monthly-billing rate is about 20 percent higher than the annual rate on every package, and monthly billing adds a $500 setup fee. The Essential and Growth packages include the dialer, while Starter needs a $100 add-on. Sierra's Lead Engage nurture add-on costs $199 per month on Essential and Growth and is not available on Starter, and Google pay-per-click management needs at least $500 in monthly ad spend.

The Close's review uses an older figure. It states "At $500 per month, it's not inexpensive," which predates the current Sierra table. Use the table above, not the review, for budgeting.

The worked example below uses the same five-user team with two cost scenarios. It is an illustration built from the list prices in the table, not a quote.

Consider a five-agent team that needs calling and texting inside the CRM. On Follow Up Boss's Grow plan, five users at $58 per user per month on annual billing come to $290 per month, and the calling add-on adds $33 per user, or $165, for a total of $455 per month. Follow Up Boss's Pro plan costs $416 per month on annual billing for up to 10 users with calling included, so the same team pays $39 less per month, or $468 per year. On Sierra, the Essential package covers three users at $399.95 per month with the dialer included, and two extra users at $60 each bring the total to $519.95 per month, which is $103.95 above Follow Up Boss's Pro plan. That gap buys a website and lead capture that Follow Up Boss does not sell. On the Follow Up Boss side, the lead's origin is stored on the person record as person.source in the Follow Up Boss events API reference, which is the field that any sync or proposed workflow would read to tell one lead source from another.

Automation, calling and integration in practice

Follow Up Boss's API exposes the events a workflow can listen for. Its webhook reference documents camelCase event names such as peopleCreated and textMessagesCreated, requires an https endpoint, and restricts webhook creation to the account owner and registered systems that send X-System and X-System-Key headers. Sierra's public documentation is thinner, so a workflow that spans both products would rely on the sync that Sierra and Follow Up Boss already provide, plus whatever export access Sierra allows.

The practical test is whether your follow-up runs without someone checking every lead. A proposed build can help with that gap. The steps below are a configurable design, not a live deployment, and they depend on access you must confirm first.

Proposed workflow one checks for incomplete leads. The trigger is a new lead that arrives in the CRM from the Sierra sync. The workflow reads the person record, checks for a missing stage, a missing agent assignment or a blank person.source, and writes the list of gaps to a daily review file for the operations lead. The output is a list, not a change: the operations lead decides each fix. Prerequisites are a Follow Up Boss API key for the account, and the owner's approval to register the workflow as a system. The review point is the operations lead, who signs off on every correction before anything changes in the CRM. US Tech Automations could configure the same approval gate for this design.

Proposed workflow two drafts follow-up for stalled leads. The trigger is a lead whose stage has not changed within a number of days the team picks, checked on a schedule. The action drafts a text or email using the lead's source and last recorded activity, and places the draft in an approval queue. The output is a draft with its reason attached, and nothing sends until a human approves it. Prerequisites are the team's own consent and texting-compliance review, plus an opt-out check, since Follow Up Boss records an "Unsubscribed" event type. The review point is the agent, who approves, edits or rejects each draft before it goes out. The second workflow is where the design matters most, because a retry or a duplicate trigger could send the same message twice, so the build must prevent duplicate sends before it runs.

Zapier, Make and n8n can run both workflows too. When configured, they keep run histories, retries, error branches and audit evidence. The buyer, however, must design and own the observability, the duplicate protection, the escalation path, the access controls and the upkeep of field mappings when either CRM changes. A proposed US Tech Automations build would configure those pieces, including run logs, error escalation and the approval queue, as part of the scope, but it still depends on Follow Up Boss API access, Sierra export access, and a named internal owner who signs off on consent rules.

Vendor profiles: best fit, limits and setup

Sierra Interactive

Sierra's best fit is a team that wants the site, the lead capture and the CRM to come from one place and will hold to a 12-month term. Its three packages are priced and scoped by team size, and the Growth package includes the most design options and the most users.

Its limits are real. Every package runs on a 12-month agreement, monthly billing adds a $500 setup fee, and the review site The Close calls the CRM "basic, lacking more robust features" and says its site customization is limited unless you hire a designer. Sierra's comparison page also calls Follow Up Boss automations "linear and basic," which is a claim from a direct competitor and should be tested, not accepted.

Implementation depends on the package. Sierra lists 30-day onboarding for Starter, 60-day for Essential and 90-day for Growth, with two extra training hours on Growth, all on its pricing page. Plan your data migration inside that window and ask for the export format in writing before the term starts.

Follow Up Boss

Follow Up Boss's best fit is a team that already has a site and wants a CRM with calling, texting and action plans. The Grow plan scales per user, and its 14-day free trial with no contract lets you test the workflow before you commit.

Its limits are scope and ownership. It does not sell a website or IDX search, so you pay for a site separately. Its calling is a paid add-on on Grow, and its ownership sits with Zillow, which the company's own announcement describes as a separate-brand arrangement. Test the data-export and exit terms before you rely on the brand's independence.

Implementation is lighter. Pro includes personalized onboarding and Platform includes enhanced onboarding, and the Grow plan is self-serve, according to the pricing page. A solo or two-person team can usually start on Grow without a project plan; a larger team should price Pro or Platform in from the start.

Common mistakes when comparing these two

• Comparing Follow Up Boss's per-user price with Sierra's package price as if both included a website. Only one of them does.

• Ignoring the $500 setup fee and the monthly-billing premium on Sierra when the team plans to start on monthly terms.

• Assuming Follow Up Boss includes a website because the CRM connects to one.

• Treating either vendor's comparison page as neutral. Both pages describe the other product in their own favor.

• Pricing Grow at five users and forgetting the calling add-on, which turns a $290 monthly figure into $455.

Decision checklist before you sign

• Count your users now and the number you expect in 12 months, then price both vendors at both figures.

• Confirm whether you need a website and IDX search from the same vendor as your CRM.

• Decide whether calling and texting must live inside the CRM or can come from another tool.

• Get data-export, data-ownership and exit terms in writing from either vendor.

• Run the Follow Up Boss trial on your real follow-up sequence, and ask Sierra whether it offers a trial or demo of its automation before you commit to a year.

Frequently asked questions

Is Follow Up Boss still owned by Zillow?

Yes. Zillow agreed to buy Follow Up Boss on November 1, 2023, and Follow Up Boss says the deal closed on December 8, 2023, according to its announcement post. The company says it operates as a separate brand.

Does Sierra Interactive include a website?

Yes. Every Sierra package includes website designs, and the design tier depends on the package. The Growth package includes the most designs.

Can I run Sierra Interactive and Follow Up Boss together?

Yes. Sierra's Follow Up Boss integration pushes lead activity into Follow Up Boss in real time and syncs tags and agent assignments in both directions, per Follow Up Boss's integration page.

Which is cheaper for a five-agent team?

Without calling, Follow Up Boss's Grow plan is cheapest at $290 per month on annual billing. With calling included, Follow Up Boss's Pro plan at $416 per month is lower than Sierra's Essential package with two extra users at $519.95 per month, but Sierra's figure includes a website that Follow Up Boss does not sell.

Does either product require a long contract?

Sierra's packages all run on a 12-month agreement. Follow Up Boss advertises a 14-day free trial with no contract on its pricing page.

Is The Close's $500 figure still the price?

No. The review was published in March 2024 and last updated in March 2025, and Sierra's current pricing page lists $299.95 to $724.95 per month depending on the package and billing term. Use the current table in this article and confirm with Sierra before you budget.

Making the call before your renewal date

Sierra Interactive is the right purchase when the website and lead capture are part of what you need and a 12-month term fits your plans. Follow Up Boss is the right purchase when you already have a site, want a CRM you can trial and expect your team to grow in steps. Decide on scope first, then price the two options at your actual headcount, because the cheaper line item often leaves out the website you still have to pay for.

If you want to see how a proposed build would handle the approval steps described above, see how US Tech Automations configures this. When US Tech Automations is not the right choice, a native Sierra-to-Follow-Up-Boss sync or a single CRM trial is usually simpler, and the proposed workflows only earn their cost once a team has more leads than it can review by hand.