Reviews
Thirty-nine years of word of mouth
We have never paid for a review. These are from customers across the valley, the good and the less good, with our replies.
How we are rated
312 reviews across Google, BBB, Angi and Houzz
Mentioned most
- Clean job sites
- Final price matched the quote
- Same crew lead start to finish
Counted October 2026. We reply to every review under three stars.
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Recent reviews
Pick a kind of work to narrow them down. Owner replies are from Dan.
6 reviews shown

Slope finally stays put
Our back slope had been sliding onto the lawn for years. Mike and his crew cut it into three fieldstone terraces with steps in the middle. Eleven working days, and it came through the April storms without a single stone moving.
Margaret T.Linden Falls 
Showed us the base before laying a paver
We got three quotes for a 420 sq ft patio. Hollis was not the cheapest but they were the only ones who dug down 8 inches and showed us the base before laying a single paver. Quote was $14,860, final invoice was $14,860.
Dev P.Ashby Crossing 
Excellent work, one week late
Beautiful fire pit and seat wall. Start date slipped a week because of rain, which they told us about early. Work itself is excellent and the stone matches our chimney.
Reply from Dan, owner
Thanks Alicia. We had nine days of rain in late July and we won't set a base on saturated ground. Enjoy the fire pit this fall.
Alicia R.Kettering Mill 
A shade garden that actually grows
Ruth drew a planting plan for our side yard that actually works in shade. One hydrangea didn't make it through the winter and they replaced it in April without us asking.
Carol and Jim B.Oak Hollow 
The night demo sold us
They came out at 8pm with temporary lights so we could see what ten fixtures would look like before we spent anything. We ended up with eight. Install took a day and a half and you can't see a single wire.
Priya S.Pike Hill Good fix, slow paperwork
French drain along the side of the house works. No water in the basement since. Took two reminders to get the final invoice and warranty letter, which shouldn't happen with a firm this size.
Reply from Dan, owner
Rob, you're right and I'm sorry. Warranty letters now go out the day the job closes. Call me directly if anything ever needs attention.
Rob K.Laurel Run Three generations of Hollis
Third generation of Hollis to look after my yard. Walt did it in the 90s, Dan does it now and his son Sam was on the leaf blower last month. Same week every year, fair price.
Frank D.Bramwell Engineer, permit, the lot
Our wall needed to be 5 ft at the tall end. Dan brought in a structural engineer, handled the township permit and the inspection. Price was $21,400 and that's what we paid.
George W.West Laurel Beds look new every April
Tom's crew does our spring cleanup every year. Grasses cut back, perennials cleared, a crisp hand-cut edge and 6 yards of mulch. They blow off the driveway before they leave.
Linda M.Fairmount Station 
Deer haven't touched it
We'd pretty much given up planting anything because of the deer. Ruth picked natives they leave alone: bayberry, ninebark, mountain mint. Eighteen months in and the deer walk right past it.
Hannah L.Coopersburg Glen