Kind Words

from happy clients

Sarah Mattern Design & Development | Websites, Interfaces, Brands, & Publications

Sarah Mattern is by far the most creative and adaptive designer there is. Our company builds complex web applications for many demanding customers – Sarah is the only person we will use for design and workflows. I have worked with Sarah for eight years now and she routinely creates outstanding work. More importantly, she is easy to work with and dependable; so much so that our clients actually ask to work with her again. Sarah’s qualities are a fundamental reason our company is doing well.
Kevin Knapp, President
Tierra Plan


Holy cow. Sarah…the site looks beautiful!!! I love it so much. Awesome job. 🙂
K. Korejko
Delaware Valley Regional Planning Commission


I’ve worked with Sarah several times over the years, for mutual clients and on my own website, and it’s always a pleasure. Sarah is a knowledgeable, talented website developer who loves a challenge and seems to have an endless supply of creative ideas. I’ve also found her to be warm, responsive, and unerringly professional. I would recommend Sarah’s services to anyone who is looking to refresh their website or needs help making changes to an existing one.
Amy Wright
Content Marketing & SEO


Thank you so much for delivering an outstanding microsite which completely embodies everything we wanted. You turned this around in an incredibly short time with minimal instruction. You are amazing and we are happy to provide a reference to anyone interested in your services. Thanks so very much for being the bright spot in our year!
R. Strom, Vice President
BX Worldwide


Sarah Mattern is a pleasure to work with. A consummate professional — creative and collaborative — she is driven to provide top notch design whether for print or online. I would definitely work with her again on future projects.
Anat Baron, Filmmaker, Founder
Ducks in a Row, StashWall


It’s been wonderful working with you… You’ve been cheerful, professional and enthusiastic throughout the project… You possess a rare combination of outstanding design and project management skills and technical expertise, not to mention a willingness to explore and the intellectual capacity to learn new stuff quickly. It’s been a pleasure watching you create an attractive, functional website for us – we’ve received a lot of positive feedback about it.
L. Townsend, Electronic Collections Librarian
CSU East Bay Library


We are LOVING the new logo… it fits us well and we are glad to have a new icon representing our organization. Can’t thank you enough for your help.
M. Haubert, VP, General Operations


Thank you for the website. I’m so thrilled and excited to launch. It came out beautifully.
Cassandra Crain
Interior Designer


I’m exceedingly pleased with the website, and working with you has been wonderful. I really appreciate your knowledge, personableness, and promptness in responding to requests and questions.
S. Sulmeyer
Sulmeyer Mediation, Integrative Mediation Bay Area


Thanks Sarah!  We love working with you 🙂
Kriste Michelini
Kriste Michelini Interiors


Thank you! You were AWESOME to work with!
Melinda Mandell
Melinda Mandell Interior Design


Working with Sarah Mattern was a joy — she answered every question I had with thoroughness and patience. She brought great ideas to the table. She was knowledgeable, approachable, and reliable. I would definitely use her again for future projects.
Roseanne Pereira
Blogger, Writer


I received a lot of positive feedback on our new website. One long-time customer said ‘this is the best investment LabSmith has ever made.’ Thank you so much!
Yolanda Fintschenko, Business Development
LabSmith, Inc.


The best part of a project (like this website) is getting to meet and work with some incredible folks. Take Sarah Mattern, for example. This woman is the reason my blog looks the way it does and the reason I haven’t torn my hair out in the process of posting. She is 100% professional in all her endeavors. If you too think it might be fun to launch a website or design one, run don’t walk your fingers over your keyboard and get in touch with her.
Naomi Rayman
Writes Better with Coffee

The website is performing so well! In May we had a 37% increase in new clients over the previous May. Crazy growth.
Jane Dudik
Acne Treatment Center


One thing we learned quickly…it’s a heckuva lot easier starting a company when you get amazing support from a team of dedicated professionals representing critical functions. … the leadership of Blue Mesa Consulting really appreciate Sarah Mattern for web and design brilliance. 
A. Corman
Blue Mesa Consulting


I HIGHLY recommend Sarah Mattern. Sarah redesigned our site from the ground-up two years ago, and I could not be happier with the results or the process. And, she was a delight to work with…pleasant, professional, and very effective (and cost effective).
Sean Curley
Retirement Planning Specialists


Our MatternCo-designed sites regularly receive positive feedback for their clean, elegant designs and intuitive usability. Behind the scenes, Sarah has been a dream to work with, delivering three projects for us, each of which was on-time, on-budget, with no drama – only results.
Mark Pastore & Chris Cosentino
Boccalone, Incanto, Offalgood & Cockscomb


You really delivered on giving us a website we can handle.  Thank you!
Barbara Steele
Cowhorn Winery


A special shout out to Sarah Mattern of Mattern Co. for helping bring this project to life. Her guidance and expertise were priceless!
C. Flemming
Sacramento Street


I had the greatest web designer (who put up with all of my requests, changes and general pickiness and particularity.) With her help, we hope we created a site that is simple, timeless and easy to use.
Grant K. Gibson
Interior Designer


Sarah is great to work with. She’s proactive, efficient, detail-oriented, and a problem solver. She’s also a very talented designer. I’m very pleased with the brochure and website she created for 300 Santana Row and the multimedia presentation she created for City of Richmond.
Chris Hammer, CEO
Sustainable Design + Behavior


Thank you so much for your hard work and lightning fast turnaround. We got what we asked for and then some. You have a great eye for design and did I mention you are fast! It was such a pleasure to work with someone who understood our needs so quickly. Honesty, working with you felt practically effortless from our side of the fence. I’m so happy I’d wear a sandwich sign with your business name on it and stand on the street corners for a week. Is that weird? 🙂
K. Young, Vice President
BX Worldwide


Sarah is a great partner in creating online promotions. She has an excellent sense of design and her projects are always delivered on time and with no technical issues. I keep going back to her with additional work because I know from experience that I’ll be delighted with the results.
L. Kaplan, Project Manager
Peets Coffee


I think your work is impeccable and makes running my practice so much easier. I have received countless referrals directly from my website. I would say that the money I paid you was money very well spent.
Joshua Burt
The Law Offices of Joshua A. Burt


I just wanted to let you know how impressed we are with your talent for design, user interface, work ethic, and quick turnaround. Thanks again for all your hard work, we are very grateful that we were referred to you…
D. Marble, CEO


OMG Sarah… I am absolutely blown away! This is more wonderful than I ever imagined!!!!
Dr. Vivien Burt
The Offices of Dr. Vivien Burt


I am very excited about the design! It is lovely and elegant, which are both very important to me. You’re really good at what you do.
David Price


She knew what to do, taking my ideas for a very basic design, modifying them a bit, but more important adding some features that make the website more visitor friendly.  The upshot of all this is that Sarah has my unreserved recommendation.  Thank you, Sarah.
Carl Wilson