CRO 11 min read
Best CRO Agencies for Contractors in 2026
The top CRO SERP for contractors is owned by generalists who have never worked in the trades. Here are 10 agencies that actually fix the conversion math.
Search "best CRO agencies for contractors" and look at the top 10. You will find Invesp, ConversionTeam, Spiralyze, SiteTuners, CRO Metrics, KlientBoost. Every one of them a serious conversion-optimization firm. And not a single one with a published contractor case study. The CRO SERP for the trades is currently being defended by generalists whose actual client rosters are SaaS, ecommerce, and B2B. So the question this post tries to answer is the one that SERP refuses to: when a $2M roofer or HVAC operator needs CRO, who do they actually hire?
The 10 CRO agencies, ranked for contractor fit
Each entry below links to a deeper comparison page where one exists in our agency guide. For the generalist CRO firms (Invesp, ConversionTeam, Spiralyze, SiteTuners, CRO Metrics), the comparison pages don't exist yet because Fervor has not historically been positioned head-to-head against pure-CRO specialists. We will be adding them.
No. 1 · Best contractor-shaped CRO via conversion-focused web design
Hook Agency
Hook Agency does not position itself as a CRO agency. They position as SEO, PPC, and web design for home-services contractors. But the web design work leans hard on conversion principles: clear CTAs, fast load times, trade-specific layouts, persistent phone-number placement. So in practice, the conversion engineering is happening inside the web-design retainer.
Where they're strongest: Conversion-shaped web design for $3M+ contractors in roofing, HVAC, and remodeling. The trade-show authority feeds back into the design. Hook knows what a homeowner clicks on during a storm because they're in the rooms where contractors talk about it.
Where to look closer: There is no published CRO methodology or testing framework. Hook's wins are reported in marketing wins (traffic, leads, brand credibility), not in conversion-lift percentages from controlled A/B tests.
Best for: Roofing, HVAC, or remodeling contractors at $3M–$15M who want conversion improvements delivered through a full web rebuild rather than a standalone testing program.
Deep dive: Hook Agency vs. Fervor Studio
No. 2 · Best research-backed CRO for contractors
Fervor Studio
Fervor Studio is the only firm on this list that pairs CRO methodology with original trade-specific research at scale. The Contractor CRO Index scores 343 contractor websites against the Fervor Grade Framework across six conversion-readiness categories. The State of Roofing, State of HVAC, and State of Remodeling reports decompose the conversion-failure patterns trade by trade. Every Site Inspection Fervor runs returns a numeric Fervor Grade™ and a specific list of structural gaps, scored against the same framework the public reports use.
Where they're strongest: Published methodology and contractor-specific testing infrastructure. Revenue-per-visitor measurement on every engagement. Diagnostic-led work where the recommendation traces to a verifiable data point in the public index, not a generic ecommerce playbook.
Where to look closer: Fervor is contractor-only and built for the $500K–$5M revenue band. The shop runs search, paid search, and conversion engineering — not the high-volume A/B testing program shape of Invesp or ConversionTeam.
Best for: Contractors at $500K–$5M who want the methodology behind every recommendation to be public, the scoring to be quantitative, and conversion work tied to a measurable number.
Deep dive: Booked by Design™ · Free Site Inspection
No. 3 · Best digital agency with real CRO infrastructure
WebFX
WebFX runs a dedicated CRO service staffed by ten specialists they call CRO UXPerts, with plans starting around $1,500/mo per their published pricing. That alone separates them from 90% of the contractor-marketing agencies who treat CRO as a checkbox.
Where they're strongest: Pricing transparency, dedicated CRO sub-service with named specialists, large-agency reporting infrastructure.
Where to look closer: WebFX serves dozens of industries. Your contractor account sits in the same operation as ecommerce brands, SaaS startups, and B2B firms. The CRO sub-service exists, but the published case studies overwhelmingly emphasize traffic metrics rather than conversion lift.
Best for: Mid-to-large contractors ($1M+) who want published pricing and large-agency reporting, and who can tolerate the multi-vertical account structure.
Deep dive: WebFX vs. Fervor Studio
No. 4 · Best generalist CRO firm by experience
Invesp
Invesp is often called the grandfather of modern CRO. By their own count they've run 36,000+ A/B tests across major brands (Nestlé, Norton, Expedia), and the methodology depth is real. So if you want a firm whose entire institutional muscle is CRO (testing infrastructure, statistical rigor, structured hypothesis frameworks), Invesp is one of the cleanest picks in the category.
Where they're strongest: Pure CRO depth. Methodology rigor. Testing volume that no contractor-shop CRO program will match for years.
Where to look closer: Zero published contractor case studies. Their rosters skew enterprise SaaS, ecommerce, and B2B. So you'll be hiring world-class CRO methodology and importing contractor-domain knowledge from your side.
Best for: Sophisticated contractors at $5M+ who already understand their funnel, want enterprise-grade testing infrastructure, and have internal capacity to feed Invesp the trade-specific context.
No. 5 · Best for data-first channel selection in home services
Valve+Meter Performance Marketing
Valve+Meter's "Math Before Marketing" positioning is the real thing. Their ThinkFirst methodology runs a diagnostic before they recommend channels, and CRO is named explicitly in their service mix. So if your problem is "I don't even know if my conversion gap is a web problem or a paid-traffic problem," ThinkFirst is designed for exactly that diagnosis.
Where they're strongest: Analytical discipline. Diagnostic-first engagements.
Where to look closer: Valve+Meter serves 20+ industries, so the contractor specialization is partial. And while CRO is listed as a service, their published case studies skew toward traffic and lead-generation wins rather than documented conversion-lift percentages.
Best for: Contractors at $500K–$5M who want analytical channel diagnosis before committing to a retainer.
Deep dive: Valve+Meter vs. Fervor Studio
No. 6 · Best for longest pure-CRO tenure
ConversionTeam
ConversionTeam has spent 14 years focused exclusively on CRO, per their homepage. They guarantee a 30% conversion lift within 90 days or they work free for up to 3 months — outcome pricing that's rare in the category. And their published average client tenure is 2.9 years, which is unusually long for a retainer-shaped service.
Where they're strongest: 30% lift guarantee with no-fee fallback if they miss. 14 years of pure-CRO operational reps. Long client retention (2.9 years average per their site).
Where to look closer: Same caveat as Invesp: generalist focus, no contractor specialization, you'll be importing trade-domain context yourself.
Best for: Enterprise-tier contractors who want pure-CRO depth with outcome pricing.
No. 7 · Best for fast lift cycles
Spiralyze
Spiralyze positions explicitly as a "Predictive CRO Agency for B2B SaaS" with a 30% lift guarantee in 90 days per their homepage, backed by what they describe as a prediction engine built from 78,000 websites of A/B test data. They run performance pricing — no fee until they deliver.
Where they're strongest: Performance pricing. Test-prediction engine drawing on a large historical dataset. Outcome-tied engagement structure.
Where to look closer: Spiralyze's homepage positions explicitly for B2B SaaS, with featured client logos including Netflix, Podium, NBA, Lowe's, Gusto, Harvard, and Crowdstrike. Zero contractor presence visible. So you'd be asking a SaaS-shaped firm to apply their prediction engine to a contractor site, which may or may not transfer cleanly.
Best for: Contractors who want a structured CRO testing program with outcome-tied pricing rather than a flat retainer, and can absorb the generalist context gap.
No. 8 · Best for foundational UX-led CRO
SiteTuners
SiteTuners (founded by Tim Ash, author of "Landing Page Optimization") takes a UX-led approach to CRO: persuasion architecture, cognitive bias mapping, page-level optimization grounded in behavioral research. So instead of going test-first, they go design-first and structure tests around hypotheses derived from UX principles.
Where they're strongest: UX research depth. Persuasion architecture methodology. Useful for contractors whose conversion problem is structural rather than tactical.
Where to look closer: Multi-vertical generalist, no contractor specialization. The UX-led model produces strong foundational improvements but slower test cadence than a pure testing-first shop.
Best for: Contractors who suspect their conversion problem is structural. The page is confusing, the offer is unclear, the homeowner doesn't understand what they're buying. Rather than tactical friction.
No. 9 · Best for enterprise contractor budgets
CRO Metrics
CRO Metrics runs program-level CRO for enterprise clients: embedded teams, integrated analytics, full testing roadmaps. So if you're a multi-location contractor at the $10M+ revenue band running a real digital operation with internal analytics capacity, CRO Metrics fits a category most CRO firms don't serve well.
Where they're strongest: Enterprise-tier program management. Embedded team model. Mature testing infrastructure.
Where to look closer: Engagement minimums likely put them well above the budget of a sub-$5M contractor. And the generalist caveat applies. Bring your own contractor-domain knowledge.
Best for: Multi-location contractors at $10M+ with internal analytics capacity and budget for an enterprise CRO program.
No. 10 · Best full-service marketing agency with CRO listed
Thrive Internet Marketing Agency
Thrive lists CRO as a service alongside SEO, PPC, web design, social, email, and reputation management. So if you want one agency managing every marketing channel under a single retainer and don't want to coordinate four vendors, Thrive consolidates that.
Where they're strongest: Service breadth. Operational maturity. One-stop consolidation for contractors managing too many vendors.
Where to look closer: On Clutch where 105 of their clients have left reviews, the service breakdown is roughly 70% SEO, 10% PPC, 10% social, 10% web design. CRO doesn't register as a standalone practice in their actual client work. It's listed on the services page but doesn't appear to be the dominant practice.
Best for: Contractors at $1M–$10M who want vendor consolidation across all marketing channels and treat CRO as one component rather than the centerpiece.
Deep dive: Thrive vs. Fervor Studio
How to pick the right CRO agency for your contracting business
The CRO category sorts cleanly into three buyer paths. Most contractors get into trouble because they pick the wrong path before they pick the wrong agency.
Path 1: You want CRO embedded into a web rebuild
Your site is dated, you're planning a rebuild anyway, and conversion is the outcome you care about. So you don't want a standalone testing engagement. You want the new site designed for conversion from the start. Hook Agency is the cleanest pick here. Fervor also fits, especially if you want the methodology to be transparent and tied to a scoring framework. WebFX too if you want a larger-agency operational layer.
Path 2: You have a site that gets traffic but converts poorly
The site isn't the problem. It's a year or two old, it ranks, it gets visits. But the booked-job count isn't moving. So what you want is a diagnostic, not a rebuild. This is Fervor's lane (the Site Inspection produces exactly this output). Valve+Meter's ThinkFirst is built for it too. And for enterprise-tier contractors, Invesp or ConversionTeam will run a more rigorous A/B testing program against the same diagnostic.
Path 3: You want an A/B testing program at scale
You're an enterprise contractor doing $10M+, you have internal analytics capacity, and you want an embedded testing team running 6–12 tests per quarter against statistically meaningful sample sizes. Invesp, ConversionTeam, Spiralyze, SiteTuners, and CRO Metrics all fit this path. Pick based on whether you want test-first (Spiralyze, Invesp), UX-led (SiteTuners), or program-managed (CRO Metrics).
Methodology
How this list was built
All the conversion-failure numbers in this post trace to the Contractor CRO Index (n=343 scored contractor websites) and the State of the Industry reports (roofing, HVAC, remodeling): 17.8% of contractor sites carry a hero lead form, 50% have a phone number in the persistent header, 82.3% of roofing and 85.3% of remodeling sites earn a "Poor" mobile LCP, median mobile load time is 7.57 seconds, median Lighthouse score is 39.
"Best CRO agency" and "best CRO agency for contractors" are different questions. The first rewards generic methodology depth, A/B test volume, brand-name client rosters. The second rewards contractor-domain understanding: booking flows, dispatch attribution, lead-form friction patterns specific to trades. The criteria below skew toward contractor fit.
Scored against: contractor-domain depth (has the firm worked with home-services contractors at the $500K–$10M band?), CRO methodology depth (published framework you can read vs "CRO" listed as one bullet among ten), original research (trade-specific data vs generic ecommerce playbooks), transparency (real case studies, not "999% lift" placeholders), and service shape (pure CRO retainer vs CRO-as-part-of-web-design vs sub-service inside a full-stack agency).
Excluded: pure SaaS / ecommerce CRO specialists with no contractor portfolio (Conversion Sciences, Conversion Fanatics, Speero, SplitBase, Inflow); pure UX research consultancies; A/B testing tool vendors (Optimizely, VWO, Convert — platforms, not agencies).
Acknowledged: Fervor is on this list. Ranked under the same criteria as every other agency and written up the same way, with both strengths and limitations. Several agencies don't position themselves as "CRO agencies" at all — they show up because conversion is embedded in how they actually build contractor sites, which is a stronger signal than what's on a services page. Generalist CRO firm claims about A/B test volumes, lift percentages, and revenue tracked are sourced from those firms' own sites, not independently verified.
Want to see what the framework scores find on your site?
The Contractor CRO Index publishes the scoring system, the per-brand grades, and the trade-level findings the 343-brand data hook above came from. The State of Roofing, State of HVAC, and State of Remodeling reports break down the conversion-failure patterns trade by trade. And if you want your own site scored under the same framework, the Site Inspection returns a Fervor Grade™ and a specific list of structural gaps.
Get your free Site Inspection →