Pioneering Web Design & Development in Seattle for Your Unique Digital Presence

I've worked with Sandcastle for many years. They know what they are doing - they give great advice, listen to my needs and are transparent about their work. I've recommended them to others who have been equally impressed. David and the team are friendly and never talk 'tech' to me. I truly appreciate their professionalism their willingness to accommodate our requests.

- Julie T, — Seattle Children's Hospital | Guilds

We have thoroughly enjoyed working with Sandcastle for over 11 years! Sandcastle’s staff has consistently been a great group to work with. From basic website updates to large, complicated projects, they always make sure to thoroughly understand our company needs and thus website needs before moving forward. Their team is very enjoyable to brainstorm with, collaborate with, and communicate with.

- Madison P, — Prothman

I have known David and worked with Sandcastle many times over the last 15 years. Sandcastle is my “go to” company when I need to create a new client website or help increasing conversions on existing sites. David and his team understand direct response marketing principles and their knowledge of ‘what is working’ in the eCommerce space is second to none.

- Rick C, — Direct Branding

Sandcastle designed our website and has hosted it for many years. I’ve been most impressed with how responsive they are. I just email them and usually I get a response the same day. Very pleasant folks to work with.

- Pat F, — Custom Pure Water

I presented the need for a client portal to Sandcastle 4 years ago. We worked together to define the specifications and then they were on their way. My clients have been enjoying the ability to securely check sensitive information ever since. The team at Sandcastle has a talent for turning a complicated task into an elegant solution. We are grateful for the service that they provide.

- Jim F, — Financial Assistance, Inc.

In their development, maintenance and ongoing improvement of a mobile app platform and dozens of mobile apps for my business, the team at Sandcastle has been innovative, responsive and flexible. They stay on top of the frequently changing mobile operating systems and technology trends and proactively bring solutions to the table. I could not ask for a better partner.

- Tim F, — 468 Communications | 468 Insider App Platform

This is the second time I’ve worked with Sandcastle. David and his team make things happen. They consistently hit deadlines and deliverables. They are 100% dependable, very adaptive to new situations, and a pleasure to work with.

- Frank C, — Seagull Scientific | Bartender Software

My company started working with Sandcastle in 2013. My favorite thing about them is their response time. All it takes is an email and it seems like things fly into motion. I cannot tell you how many times they have helped us out with small stuff and larger stuff in a quick and timely manner. Their billing has always been more than reasonable as well. It’s been a pleasure working with them for all these years.

- Shane H, — ZipFizz

We’ve worked with Sandcastle for 8+ years and throughout have found them to be responsive, efficient and very easy to work with. They always exceed expectations in project turnaround and finished product. We look forward to doing business with them for years to come.

- Amy B, — Marastar | Marathon Industries

Having worked with Sandcastle for 14 years I highly recommend working with them. They are creative and highly responsive. We wouldn’t be this far down the road if they didn’t consistently exceed our expectations.

- Gary F, — Long Term Care Associates

David Newsom and his team at Sandcastle Web Design & Development have been phenomenal to work with. They helped us build, design, and highly customize a successful e-commerce platform unique to our needs and our industry. They are dependable and have been exceptional at delivering quality work, providing support, and offering valuable guidance. We made the right decision going with Sandcastle.

- Brian S, — Aviation Supplies & Academics, Inc.

Sandcastle designed a site for my new business during Covid. They listened and asked questions to help improve and refine my vision. Throughout the process and after completion they supported the continued improvement of the site. My website is the face of my business and I am proud of what Sandcastle built. I have worked with other developers before and have never experienced such a smooth development process. Their communication was excellent and the finished product is exactly what I had in mind.

- Brian B, — Gravitas Chemical

Sandcastle has been great to work with. They are extremely competent, responsive, helpful and pleasant to work with. They have been instrumental in helping us maintain a technological edge in the digital marketplace.

- Jackie S, — Aviation Supplies & Academics, Inc.

Great team - very responsive to any of our requests.

- Jeff T, — Ocens Satellite Systems

We depend on our web presence and e-commerce for our day-to-day business and our day-to-day business needs frequently change. SandCastle has been incredibly responsive and quick to help make the necessary changes and updates. Great company!

- Rob V, — National Safety Inc.

David and his staff are professional, flexible, and responsive. Our website looks great and we are regularly complimented on it. The Sandcastle team have gone above and beyond to help us troubleshoot issues that come up and have responded quickly to ensure there is little impact on our website. I would highly recommend working with them.

- Rebecca H, — Seattle Children's | Science Adventure Lab