The Mark of Excellence
for over 30 Years.


A Premier Residential Construction Company in Maryland: Our Story

Cahill Companies: Botanical Decorators and Cahill Design Build

The Cahill Companies’ success is a result of talented people following their passions for those who understand what passion is all about.

This story started 28 years ago when the owner, Christopher Cahill, moved to Washington, D.C. to pursue his love of classic landscape design. After an extensive study of the potential market places in the Northeast and Mid-Atlantic, Washington, D.C. was chosen for its unique appreciation of landscape architecture, the longer growing season, and extensive plant pallets. This move turned out to be a great decision that launched a legendary career and the creation of two very special companies.

It is the story of a dream to create beautiful projects, the gathering of the industry’s finest talent, a workplace environment that allows this talent to thrive, and loyal clients who truly appreciate our passion for what we do.

Our First Company: Botanical Decorators

Our first company, Botanical Decorators, quickly grew to be the premier landscape company in the D.C. area, gaining both local and national recognition every year.

As the company grew, so did the size of its projects. It was not unusual for a Botanical Decorators design to include both landscape and architectural elements including:

  • Pools
  • Pool houses
  • Pavilions
  • A tennis court
  • Screened-in porches
  • Garages

The company was becoming as well known for its custom construction as it was for its hardscapes and plantings. Our clients so enjoyed their experiences that they wanted us to handle everything and provide them with even more design build services.

A Residential Construction Company Was Formed in Olney, MD

Our very best clients suggested we open a separate residential construction company. They said it was hard to explain that their landscapers were renovating their home. We followed our clients’ advice and Cahill Design Build was formed.

Our first project was over a quarter million dollar addition and kitchen renovation that turned out to be simply spectacular. The word was out and our loyal customers were so supportive—they helped our new residential construction company grow to over three million dollars a year in revenue in just two years!

We had the luxury of already having the finest designers, craftsmen, and trade specialists on staff and have since had the pleasure to work on some of the finest home construction projects in the area. Already, we have received National Awards for our work, much of which has also been featured in publications on numerous occasions.

We want to thank our clients throughout Washington, D.C., Maryland, and Virginia for over 30 years of loyalty and support. We will follow you anywhere you want us to go. Keep your eye out—our newest venture is just around the corner!

Contact us today to start your next design build project for the most passionate and supportive experience a residential construction company can offer.

© Cahill Design Build 2021. All rights reserved. | 5011 Olney-Laytonsville Rd., Suite B, Olney, MD 20832



The information on this website is for informational purposes only; it is deemed accurate but not guaranteed. It does not constitute professional advice. All information is subject to change at any time without notice. Contact us for complete details.