McCarthy Building Companies: A B2B SEO Case Study (and Success Story!)
In many industries, leadership is skeptical of B2B marketing. Case studies, a detailed strategy, and careful explanation make it possible to connect the dots between digital marketing and lasting growth in a vertical historically dominated by handshakes and relationships. Among our many B2B digital marketing case studies, none exemplifies the impact of foundational SEO like our work with McCarthy Building Companies, Inc.
Learn more about our work supporting McCarthy’s construction marketing efforts and what’s next for our valued partnership.
Meet McCarthy Building Companies
McCarthy was born in a barn. Well, its first project was building a barn in Ann Arbor, Michigan, in 1864. More than a century later, McCarthy is one of the premier commercial construction companies in North America with locations across the US, and it’s an industry leader in safety, innovation, and sustainability. Now 100% employee-owned, McCarthy construction projects span diverse verticals, from data centers to healthcare and marine to commercial real estate.
Our Work with McCarthy
Since 2010, McCarthy Building Companies has trusted Oneupweb for effective SEO and content marketing services. Over the years, we’ve supported McCarthy and its subsidiaries to shape digital marketing strategy, improve SEO performance, create brilliant content, and support their sustained growth.
This B2B SEO strategy case study was originally published in 2019, highlighting our biggest year of content optimization and implementation at the time. We remain a core component of McCarthy’s marketing efforts to this day!
Construction Marketing Case Studies: How Oneupweb Got It Done
In 2017, McCarthy Building Companies, one of the leading commercial construction companies in the US, needed to stay competitive atop the SERPs (search engine results pages) with competitors like Gilbane, Turner, and DPR by investing in digital marketing. The McCarthy marketing team also knew that a renewed investment in digital marketing would be critical to achieving the company’s broader business objectives. Naturally, they leaned on our team of construction SEO experts.
Laying the Foundation
McCarthy partnered with Oneupweb to execute a 12-month retainer to optimize strategic, high-priority projects while retaining the flexibility to address any other urgent needs that might arise. McCarthy first trusted Oneupweb to handle search engine optimization (SEO) for its website, McCarthy.com, in 2010.
Since then, McCarthy has steadily grown. Today, the organization is #88 on Forbes list of Top Private Companies. McCarthy’s annual revenue has increased from roughly $3.6 billion in 2020 to $4.78 billion in 2024, with notable growth in mission-critical and renewable energy projects.
The Impact of Construction Marketing SEO
With a full year of implemented work, McCarthy saw dramatic improvement for several of our key performance indicators (KPIs).
Optimization results:
- Organic goal completions up 771%
- Organic click-to-call up 712%
- Organic email clicks up 675%
These statistics represent YOY performance from 2016 to 2017.
Digital marketing and content creation:
- Goal completions from all sources up 1,344%
- Sessions from email up 459%
These statistics represent performance for all of 2017.
Chapter 1: McCarthy, Oneupweb and the Marketing Retainer
McCarthy has a reputation in the industry as a design-builder and EPC (engineering, procurement, construction) firm that can design and build the largest, most technically challenging projects in the United States and deliver quality results on time and on budget. Their 3,000+ employees are known for using cutting-edge project management practices and for wholeheartedly incorporating the latest sustainability and green building innovations.
Having a fresh, modern website is a necessary component of reinforcing their innovative approach to project management.
Building Something New – A Website
McCarthy knew that building a new website could cause substantial decreases in site sessions after launch. Search rankings can drop permanently if nothing is done to identify and optimize problem pages. They looked to Oneupweb to mitigate the risk of traffic declines and to help them see their site through pre-launch and launch, as well as ongoing optimizations. Our proactive approach to website transitions helped keep organic session declines in check; traffic changes were in-line with seasonal fluctuations, nothing more.
Resources: The SEO Site Launch Checklist
Keeping an Eye Out for Trouble
While supporting McCarthy within the retainer, we noticed their sustainability content (net-zero building and renewable energy project pages) had dipped in organic performance since the launch. With a green light from McCarthy’s marketing team, we used some retainer time to reintroduce some of the well-performing content from the original pages into the new pages and optimize them to help buoy them back up toward the content’s former rankings.
This was important because McCarthy is a leader in sustainable green building within the construction industry. More and more prospective project owners are eager to work with builders like McCarthy who can deliver projects with world-class green credentials and super low operating costs (net zero buildings that generate as much electricity as they use).
The Flexibility to Address Problems Quickly
The marketing retainer gave our team the agility to identify opportunities to react to emerging issues and proactively pursue new opportunities.
- The McCarthy marketing team looked to Oneupweb to fine-tune their new site with other improvements, including a user experience (UX) audit and optimizing all new content added to the site, mostly new case study pages as the company completed new buildings. These brand-new pages are some of the most important for attracting and converting prospects.
- When the Oneupweb SEO team determined that overall website sessions were down after another vendor launched a new iteration of their site in 2016, we identified the specific web pages on the new McCarthy.com that had dropped from their previous traffic levels. We then optimized those pages and buoyed their rankings back toward their pre-launch levels.
- We also made improvements to McCarthy’s SEO, analytics, user experience and page content. We provided valuable demographics research to their marketing department, and we adjusted calls to action to improve conversion rates on their regional office pages.
Month after month, we helped McCarthy work toward meeting their most important marketing and business goals over the course of 2017. We also stood at the ready and jumped in whenever necessary to solve their most pressing digital marketing problems as they arose.

Chapter 2: Retainer Agreement Approach: Digital Marketing and SEO
Over the course of 120 hours, we got a lot of work done. We worked to improve McCarthy’s newly launched, re-branded website where there were drop-offs in rankings, sessions, or conversions. We optimized new copy they added to the site throughout the year, which was mostly new project pages, and completed a long list of one-off digital marketing tasks that really helped their internal team – and the company as a whole – in a multitude of ways.
1. Website redesign post-launch SEO support
Fresh on the heels of the launch of their redesigned website, we began 2017 ascertaining how McCarthy’s new site was performing.
We determined that while mobile sessions were up, their overall sessions were down – a common problem when a new version of a site is launched. But when it came to solving this predictable post-relaunch problem, where, exactly, to start? McCarthy put us on the case.
Due to the URLs on the new site being different from the previous version, tools like Google Analytics weren’t able to perform side-by-side comparisons. So, we manually compared the sessions between the old site benchmarks and the new site numbers to isolate and identify the under-performing pages. Then we determined that many had title tags, meta descriptions, URLs, and important on-page copy changed or cut during the redesign – after all, the new site was built by the third-party vendor in part to make the site look good and work well on a small screen, where streamlined page copy looks best. It was understandable.
Web pages are always striving to strike that perfect balance between content and design. Many of the problem pages had simply been pared back too far in the redesign process to hold on to their previous rankings. We went to work, expanding the copy on those pages – bringing them more in line with their previous iterations while also adhering to the aesthetic spirit of the new site. We re-introduced missing keywords and, in some cases, added title tags and meta descriptions lost in the transition.
2. Sustainability/Green Building Content Marketing and SEO
Some of the traffic drop-off McCarthy endured immediately after the launch was to some of their most important pages, including those pages detailing their sustainability bona fides and their utility-scale and distributed renewable energy capabilities.
Sustainability is a powerful selling point for prospects in government, higher education, and private industry looking to partner with builders who can deliver LEED-certified and net zero water treatment plants, performing arts buildings, hospitals, biotech laboratories, and other structures for their communities and investors.
And with solar energy projects growing exponentially in McCarthy’s regional southwest and California service areas, it was vital to quickly re-establish their high profile for this type of work.
We used retainer hours to incorporate aspects of the old content into the new content and introduce new keywords for both the sustainability page and the renewable energy page.
The results were excellent. By July 2018, we had transformed a 74% drop in sustainability page organic sessions into 83% growth. Likewise, organic sessions for the renewable energy projects page shot up 250% after additional content and targeted keywords were added, besting the previous iteration’s performance.
3. Ongoing SEO Support
As McCarthy continued to produce new content for the newly launched site, we provided on-page optimization and ongoing keyword strategy to ensure their newest content – often the most relevant to potential new clients – received maximum standing and exposure in Google and Bing.
McCarthy’s newly finished healthcare center, auditorium, museum, or port expansion project pages are extremely relevant to prospects who want to learn about McCarthy’s latest work in their particular vertical, whether it’s education, hospitality, healthcare, alternative energy, civil or another industry.
Individual SEO-related Retainer Tasks Completed
If sessions are down, it’s hard to meet your business goals. McCarthy took advantage of their retainer to tap our SEO and content marketing team to improve the standing of the pages that suffered in the post-launch and to ensure maximum standing for new project pages. The SEO-related work we completed for McCarthy included:
- Determining the cause of the noticeable post-launch dip in Bing and Yahoo traffic
- Updating existing (or providing missing) title tags and meta descriptions
- Adding meta description fields to pages of the new site that were missing in the CMS
- Keyword research that increased traffic and raised the percentage of qualified users visiting the site
- Copywriting
- Adding alt text to photos
- Content gap analysis, which measures how McCarthy stacks up against the competition for their core keywords
4. General Digital Marketing Support
Our retainer agreement also allowed us to serve as a go-to digital marketing specialist for McCarthy. Oneupweb is always poised with our specialized skill sets to help businesses solve complex problems and perform deep analyses of all their digital tools.
Across the months of 2017, McCarthy entrusted us to improve the visibility, usability and performance of their site and identify the cause of and correct dips in traffic. They also asked us to help them better understand their audiences on their various platforms and glean insights that proved valuable for McCarthy company-wide.
Individual Digital Marketing Retainer Tasks Completed:
There’s a lot more to meeting your marketing and business goals than SEO alone. McCarthy took advantage of their retainer for more general digital marketing help. Month to month across 2017, we provided the McCarthy team with:
- Tagging that allowed McCarthy to track traffic to their website from Google Business Profile in Google Analytics
- Tracking that gave the company more insights into their email campaigns
- Visibility into the audience demographics and seasonality of regional office page traffic
- Visibility into the terms entered in the homepage search bar, which also provided business insights
- Recommendations for how to best add logo download capability in the future to their Press page to give stakeholders and the media fast, professional access to the McCarthy logo
- Consulted on issues/questions regarding the development of several of the company’s new subsidiary websites
- The addition of Google Analytics (GA) goals for job applicants
- Fine-tuning the conversion funnel for job applicants
- Offered their development partner development tips and worked with them to help implement new content on mccarthy.com
- Monthly reports that gave McCarthy a current snapshot of website performance, data analysis and our forward strategy
Chapter 3: How the Retainer Agreement Made a Difference with Digital Marketing and SEO
A monthly marketing retainer helped McCarthy push its new website past the old site’s level of performance and ensured that its newest, most important pages received quality exposure in the search engines. Within the retainer, they also received flexible digital marketing solutions that helped their marketing department, and the company as a whole, serve and understand customers better, convert more traffic, and win more business.

SEO Success/Benefits:
These numbers were pulled looking at the full year of 2017 compared to the full year of 2016.
- Organic traffic to Sustainability page up 60%
- Organic traffic to Renewable Energy page up 69%
- Conversion rate increased 1,311% YOY
Digital Marketing Success/Benefits:
- We began tracking searches on the McCarthy website to gain a better understanding of what users are looking for and created pages to provide missing information.
- McCarthy is now prepared to plan a Google Jobs strategy with their third-party job listing partner.
- McCarthy was able to clean up their email list in preparation for updating their email strategy.
- McCarthy is now able to track when users submit job applications to better understand what channels those users are coming from and what they do on the site before submitting an application.
- The demographic research we did for their regional office traffic provided each office, and the company as a whole, with valuable insight into the audiences specific to each regional office.
Chapter 4: Construction Marketing SEO Continues to Generate Results
In 2026, Oneupweb remains McCarthy’s chosen digital marketing partner. With our monthly retainer agreement increased to 15 hours, we continue to optimize existing content to meet Google’s ever-changing best practices and algorithms, create new content, and provide much-needed technical insight as needs arise.
And McCarthy is still improving!
Oneupweb has also supported McCarthy’s subsidiary, Castle Contracting, improving their digital performance with a monthly retainer.
The Next Chapter
Every client has unique needs and business objectives. McCarthy used its monthly retainer to preserve its SEO performance before and after launching a new site. Together, we then focused on capturing more leads from sustainable construction and green building keywords. Today, we continue to ensure maximum exposure in the search engines, attract high-quality job applicants and help the McCarthy team better understand its own audience.
And we can do the same for your B2B company.
Get in touch with us if you’d like to learn more about how Oneupweb’s monthly marketing retainers can make a difference for your company.