21 Owl's Nest Road, Centreville, Delaware 19807



“Prior to meeting Bill, we had hired a prominent company whose work we had admired at the Philadelphia Flower Show. It was the first time we had worked with a professional landscape designer and while we were spending more money than we had ever imagined for landscaping, in the end we felt we paid too much for work that wasn’t particularly creative or unique.”

“We called White Oak to help us finish what the other designer had started and, more importantly, to help us create the garden we had originally hoped for. When Bill shared his vision for our yard, we were blown away by his knowledge and creativity. Once we saw our future garden the way Bill saw it, we wanted to start planting right away. Bill developed a plan that we could execute in stages as time and budget allowed. Regardless of the relatively modest budget for each of the phases, White Oak has always delivered more than we expected and made the most of every dollar.

After 6 years and multiple phases, we are thrilled with the way our once boring yard has been transformed into the fabulous garden we always wanted. “
– Cynthia Dewick & David Gerbec


“When Frederick and I first started looking for a landscape architect, we found one through the Internet and one was a referral through a friend. The moment we met Bill, we knew we found a winner by the way Bill came prepared to listen with a pad, pencil, and the way he took notes, ask questions, and took pictures. “

“At the start Bill asked us to tell him what we wanted if we could have everything. We walked the property and Frederick and I listed walkways, paths, sitting areas and patios. Then, what was interesting, after listening to our wish list, Bill asked us to explain why we wanted things where we stated. It made us think why we were putting a wooden deck where a stone patio could go, and made us explain why we were putting a grill there and not here. In reality, Bill was making us think about what each area was to be used for, sitting, entertaining, lounging, and eating. Bill questioned us and listened to our answers and proposed alternatives and new ideas. With such a large expanse of land, we knew we could not do everything we wanted at once and Bill knew that he was building a relationship with us for years to come. Bill and his team created a resort within our property that once was only hills, steep slopes, and unusable space around our pool. Now sitting outside, we find ourselves thinking that we are in a resort and have named our property Rock Haven. We are truly pleased to continue on our relationship with Bill and the White Oak team.”
– Jay Gloede & Fred Groya


“Do you JUST want some shrubs and trees or do you want an oasis? If you want an oasis call White Oak! ” “Bill and the White Oak team make sure that you get a beautiful outcome that exudes warmth and peace. Bill is an artist who spends hours visualizing and designing each of the elements as opposed to something drafted in an office. The lush sanctuary that results will be what you dreamed of. We have worked with Bill more than once as our outdoor space has evolved. We spend more time enjoying our backyard with each change! Thank you for what you did for us.”
– Nannette and Joe Oddo


“Dealing with Bill and Allison was a pleasure. Bill is a man of vision who I believe has the life experience that enables him to visualize the project even from the beginning. In the end, what we got was truly a WOW! ” “The design and quality of the landscape far exceeded our expectations. Everyone now comments on our new space. We enjoy it almost every evening having some wine or drinks with our friends.

The way Allison runs the office and handles the logistics is commendable! The only occasion when White Oak will lose time is on account of the weather. The crew arrives on time and works at a pace that meets the project timing originally planned. Everyone involved seems to have a good knowledge of what is expected.

I now openly refer White Oak whenever I hear of someone talking about hardscaping or landscaping.

Thank you to the White Oak Team……you do not disappoint!”
– Mark and Donna Oehling


“There are a lot of “landscapers” out there, but there is only one Bill Duncan. He is a true artist, creating unique spaces that flow effortlessly into their surroundings.”

“Bill has done four separate projects for me over the years and, every time, has managed to take my half-baked ideas and push them into an astonishing new place. His “out of the box” creativity and attention to the smallest detail have transformed my pedestrian property into a feast for the eye and spirit.”

– Susan Parker


“After sitting on our landscaping plans for almost two years seeking the right person and the right company we were referred to Bill and White Oak through a friend who was glowing about his work. Immediately we could tell that Bill was different from other designers. ” “He listened, he asked questions, he made sure that he was crystal clear on our vision of what we wanted. During the design and build process Bill was involved at every step, checking in on progress, course correcting when needed and maintaining an unrelenting desire to satisfy. To say that we are pleased with the outcome is an understatement. We are delighted and would recommend Bill and White Oak to anyone unreservedly.”
– Julia and Jonathan Walker


“One of the best parts about working with Bill was that the first visit lasted an hour and a half. Bill came out with a blank sheet of paper, we toured the yard, and I told him what I liked, what I didn’t like, and that I had no clue about how to make the yard better. He took all my ideas and comments and turned them into the garden I dreamed of but couldn’t envision. Now I feel like I live at Longwood.” Click to read more…
– Bill Powell


“We’ve worked with several landscapers in the past, but what’s different about Bill is his design sense.” “We’re impressed with the hardscape in our garden as much as with the plantings. Bill really does have a gift; he thinks outside the box. Plus, he can keep to a time schedule; he can meet deadlines. And he’s a great listener. He is also flexible with the design process. He is able to make adjustments during installation, which is essential. The day he came to start our project, I made a huge change and he went with it. On the last day, which coincided with a big party we were having that night, he was unbelievable the way he handled an unexpected problem. He made things right under pressure. Bill comes up with good solutions; he’s a good problem solver.”
– Jody Keller


“We never paid much attention to our backyard until the loss of major trees one by one over the years resulted in a loss of privacy.” Our project required totally re-landscaping a city yard and converting a deck to a patio. The yard went from casual and naturalistic to a lot more interesting and creative. We wanted an outdoor room, and the change is quite dramatic. You’re really hiring Bill for his artistic talent, especially with hardscaping. He’s whimsical but also practical, and he really listens to your needs. When Bill creates a garden, he operates from a vision of the finished product – and he really knows what he’s doing. He even improved the drainage in the yard, addressing some issues we had been dealing with for years.”
– Jane Castle


“Our first landscape artist, recommended by our pool builder, landed in our front yard in a helicopter. He walked the property with us, discussed ideas and a budget, and then he flew away and everything after that was done remotely. Every design change we requested cost $500 to $1,000, and he still didn’t understand our vision. By the time we met Bill, we really needed help.”

“He immediately identified the problem with the site, redrafted the design, and nailed it on the first try. As we moved forward with the installation, Bill proposed changes. I was initially skeptical about some of them, but Iwent along – even agreeing to take down three enormous white pines. Now it’s like our backyard has doubled in size, and we love it. Bill created three distinct outdoor living areas where before we just had a backyard. Each area is unique and beautiful, although the yard is only a half-acre. When we entertain, the party often flows from one area to the next. ill has a tremendous ability to visualize and then create from that vision. He could see problems we weren’t even aware of and devise solutions that were perfect.”

– Don DeWees, Jr.


“Bill totally changed the look of the front of our house while working within the natural contours of the land.” “We wanted to alter the approach, create a circle in front and anticipate a garage for the future. I also wanted to create some privacy without jeopardizing the functionality. Behind the house, where there was nothing but open space backing to woods, Bill created a veranda surrounded by a three-foot-high stone wall. The outdoor fireplace works beautifully visually because it looks like a ruin. I love how he mixes materials – different colored stone with brick – and how each block is placed with consideration. What I learned working with Bill is that regardless of the plan on paper, the end result will be 50 percent better than I could possibly imagine.

I would recommend Bill for his creative acumen and his design talent. You’re not going to get that anywhere else. He’s open to anything, and the creative process with him is fun. You also can trust that things will be done in a timely manner, and on budget. His crew are the hardest working, most fun people.”
– Mac Weymouth


“Bill looks at a landscape until it speaks to him. After spending hours walking our yard, he outlined a plan that came to life over a several week period.” “Because he’s really an artist, we nicknamed him Degas – and called him that all through the time he worked with us. Our garden is a breathtakingly beautiful extension of our home, a place where we watch the sunset and feel like we’re in a sanctuary. And the only direction we gave Bill was to include a pergola.

I would also add that the White Oak management and crew were great to work with. The entire experience made us feel as if they had been our friends for years. They cared about the landscaping project, but more importantly they truly cared about the Fischer family and our desire to have a welcoming outdoor area for friends and family.”
– Kathy and Dick Fischer


“This morning is brilliant. After reaching in to light the massive fire place in ‘Tuscany’, I sip my first cup and look out over ‘Napa’. Sitting – rocking myself back and forth on the soft Travertine tile patio I breath in the scene and notice yet another detail that has escaped my scrutiny over the last quarter.” “It’s a bush… or a tree. The new blooming fire truck red berries dance on the stems artistically framed by the aspen like branches of another specimen strategically placed behind it. It’s 7 something am on Sunday and I’m enjoying the crisp of the morning, the smell of the fire and the company of countless new friends I haven’t learned the names of yet. Coral Maple, Curley Willow and Old Man Walking Stick promise to introduce us in due time. I look at the untouched News Journal that I earlier set on the boulder beside the cascading waterfall and contently realize its better use. I grab it as I take the stroll along the meandering flagstone path down the seemingly freeform steps that somehow have perfect rhythm and I toss it in the fire knowing my time is better spent enjoying my new ‘Bill Scape’.

Thank you White Oak, for giving life to my back yard.”
– Ben LeRoy (Fair Hill, MD)


“When I was in the process of building my new restaurant, a friend recommended that I contact Bill Duncan and White Oak Landscaping to design the outdoor space. After meeting with them, it was determined that because the courtyard was under a roof, there wasn’t much we could ‘grow’ there.” “They came up with the wild idea of ‘sculpting’ life size trees. When I asked Bill to show me a similar tree they had done, he said they hadn’t created any in the past, but they could! We decided to throw caution to the wind, and just went for it.

Our ‘entrance courtyard’ is now a beautiful setting of life size trees, with branches and leaves forming an overhead archway as you pass through. There is a ‘fireplace’ feature on one side with a lovely classic mantel and hearth, but which is really a fountain. This adds interest and a soothing sound as you dine in that area.

Bill and all of his White Oak associates are creative, professional, and a lot of fun to work with!

Our restaurant is absolutely stunning on the inside, but I have to say, many customers like the outside even better!
– Betsy LeRoy (Greenville, DE)


“We had an opportunity to visit a long time friend who was ecstatic to show us his new landscaping in his oddly shaped backyard. What my husband and I viewed was pure paradise. Lush greens and color everywhere, but what was more impressive, was how the yard looked so much larger than it was because of its design. We never forgot the White Oak name until years later when my husband and I were building a house on a smallish lot.” “Bill and his team developed a magnificent plan to offer us privacy barriers, lush green bushes, trees, flowering perennials that would offer visual impact throughout the year. Their hardscaping including a long boulder retaining wall, flagstone walkways, and a stone japanese moon gate is always noted by our neighbors and anyone driving by. They spent extensive time on our design; not only on paper but also as the project progressed until the last small shrub was situated. They treated our project as if it was their own house. One of the most impressive items beyond the design was how mature the plantings were that they brought in.

Bill worked very well with us in providing choices within our budget, and then delivered tremendous value. I would highly recommend White Oak for any project, large or small.”
– Paula Pernick (Greenville, DE)


“Bill is a visionary. He can see three-dimensionally into air or soil or rock. He possesses an amazing talent to look into air, visualize a full rock garden or waves of ground planted with fall flowering grasses and spring flowers and summer blossoms-where nothing exists at the present time.” “He can imagine cuts of ground and rock to create playful terraces where there are rough hills, gentle spaces of cover or openness to enjoy personal time created out of tumbled weeds and hills, and private spaces out of rubble.

His crews implement his vision with speed, care and commitment, so that even when he isn’t present, you feel, as a client, that he is always seeing what is being done.

Bill takes your concept and creates dream you wish you could have imagined yourself, and are delighted in claiming the idea but knowing you could never have created the reality that he made happen. It’s magic.

Any dream, concept, or creation-hardscape, landscape or water-I would always talk to Bill and the folks at White Oak Landscape. Their imaginations would take my small idea and expand it to a level I could have only dream about and yet they create it in reality. Magic.”
– Susan Teiser & Patrick Giacomini