Eco Website design and implementation

We need a designer/s for our website and online store. We need: Site 1: Our eCommerce store to tie in with our website and have the same look and feel, we also want to change our design. Site will educate users with the ability to purchase. all info will be supplied. Site 2: Updated design with all info supplied, image galleries and contact forms. NO eCommerce functions, just the ability to ask for quotes through a form submission. Site 3 & 4: Website for architecture, these will have portfolios etc. We need a design team who will supply us with designs and implement the above sites and others as we change our systems and incorporate new services, thus we are looking for a company we can establish a long term relationship with.