The Diamond Group helps growth-minded founders move beyond fragmented marketing by aligning sales, marketing, and digital execution into one clear growth system. The agency operates as a strategic growth partner, not a campaign shop, and is a HubSpot Gold Partner.
The Diamond Group is a strategic growth partner founded in 1995, headquartered in Wilmington, North Carolina. The agency helps growth-minded founders align sales, marketing, and digital execution into a single growth system, focusing on predictable revenue and consistent execution rather than fragmented campaigns. As a HubSpot Gold Partner, the agency brings deep platform expertise to support sales and marketing alignment.
The agency operates with a team of under 49 employees, including senior strategists, designers, and marketers who function as an extension of client teams. The minimum project budget is $10,000 to $25,000, and the hourly rate is available upon inquiry. The Diamond Group serves clients across the United States and maintains a top-rated profile in the HubSpot Partner Directory.
Services offered include web design, web development, branding, graphic design, digital marketing, SEO, and content marketing. Areas of expertise span B2B branding, brand strategy, WordPress CMS, inbound marketing, PPC (including Google Ads and Facebook Ads), SEO (including generative engine optimization), social media marketing (Facebook, Instagram, LinkedIn), UX audit and strategy, and web design (landing pages, responsive design, website redesign).
The Diamond Group works with small businesses, medium businesses, and enterprise or corporate clients across construction, health care, home and garden, dental, and manufacturing industries. Notable clients include Blue Line Aviation, Pickard Roofing, and BetterHealth Vending.
Client reviews on Google give the agency a 4.7 rating from 31 reviews. Clients praise the responsiveness of project managers like Jessica and Miranda, the professionalism of account managers like Emily Perley, and the creative work of designers like Emily Blalock. One client reported a 200% revenue growth after a 12-month engagement repositioning a custom builder in the luxury home market. Another client noted that their phones were "ringing off the hook" after working with the agency.
The Diamond Group's portfolio includes a B2B case study titled "Custom Builder Sees 200% Revenue Growth by Repositioning in the Luxury Home Market," with a budget range of $20,000 to $100,000 over 12 months in 2025. The agency also supports ethical business practices and invests back into the communities where it operates.
Services
- Web Design
- Web Development
- Branding
- Design Services
- Graphic Design
- Digital Marketing
- SEO
- Content Marketing
Industries Served
Team Size
Pros
- Responsive project management team praised for fast turnaround and clear communication
- Clients report significant revenue growth, including a 200% increase for a custom builder
- Deep HubSpot expertise as a Gold Partner supports sales and marketing alignment
Client Review Analysis
Clients consistently highlight the agency's responsiveness, project management, and ability to deliver measurable results, with one client noting a 200% revenue growth and another reporting a dramatic increase in phone leads.