Designpluz is a Castle Hill based digital design agency delivering custom web design, logo design, graphic design & SEO services. Contact us for an appointment. Designpluz is a renowned for its creativity in digital design area, and is an agency based out of Sydney with experienced talent in the areas of web design, SEO services, logo design, e-commerce website, web applications, graphic design, brochure design, online marketing and much more. With a strong emphasis on client satisfaction, Designpluz is bound to build a strong understanding and deliver outstanding digital and creative solutions at an economical cost. Client satisfaction is the straight primacy we take in.