Owner-Operated · Fairfield, CT

Make the outside your favorite room.

Landscape design, stone masonry, and year-round care for Fairfield County homes — designed with an artist's eye and built with a craftsman's hands.

Text us for a free quote Call (203) 895-3458
Design · Build · Maintain · Light Licensed & insured Free on-site estimates

What We Do

One crew, from first sketch to final light.

Thoughtful design and a handcrafted touch.

Featured Shrub border with white hydrangea, a red Japanese maple, and purple rhododendron along a dry-laid fieldstone wall, with boxwood and hostas in front
Plant Care

Organic Plant Care

We focus on trees, shrubs, and garden beds. We don't offer organic lawn care, because it takes more water than we want to put on a yard here.

View plant care
Colonial home front yard with foundation plantings and a brick walkway
Design

Landscape Design

Site plans, plantings, and layouts that fit how you actually live outside — beautiful from the street, better from the back porch.

See projects
Bluestone patio with a fieldstone fire pit, seat wall, and Adirondack chairs
Build

Masonry & Hardscape

Firepits, stone walls, terraces, walkways, and steps — natural stone work built to hold its lines for decades.

See projects
Freshly striped lawn and pruned hedges in front of a colonial home
Care

Lawn, Pruning & Seasonal Care

Mowing and seasonal cleanups, plus careful pruning — skilled cuts that keep shrubs and small trees in shape.

See projects
Shingle home at dusk with uplit trees and path lights
Light

Landscape Lighting

Low-voltage lighting that makes your best features glow after dark — paths, plantings, stonework, and gathering spots.

See projects
Text us for a free quote
Text us for a free quote Call (203) 895-3458
Dennis Leahy, owner of BREN Landscaping

Why BREN

Hey, I'm Dennis.

Whether it's a night by the fire playing guitar with friends or a day at the beach, I'm happiest outside. In a past life I worked in the tech world at LEGO, where I learned what makes great design great: it has to be beautiful, and it has to work.

I look forward to speaking with you and bringing your ideas to life to make the outdoors your favorite room.

— Dennis Leahy, Owner

CT License: HIC.0579567

The owner is who you talk to

Dennis and his team are with you each step of the way.

A designer's eye on the work

Trained in design at LEGO, years in the field — projects that look right and are built right by the crew.

Local, licensed & insured

CT License: HIC.0579567. A Fairfield County company that shows up when we say we will, and stands behind the work.

LICENSED AND CERTIFIED

Credentials you can actually check.

Licensed in Connecticut, owner-operated, and working the towns around Fairfield. Verify these before you book anyone for your yard.

CT License

HIC.0579567

Active Connecticut home improvement license. Ask for it on every estimate.

Towns We Serve

Fairfield County, CT

  • Fairfield
  • Westport
  • Southport
  • Weston
  • New Canaan
  • Greenwich
  • Darien
Owner-Operated

Dennis Leahy

Dennis and his team are with you each step of the way.

Advice From the Yard

Practical guides for Fairfield County yards.

Straight answers on care, pests, costs, and timing — then get back outside.

Healthy garden beds and plantings in a Connecticut yard
September 2026 · Lawn & Plant Care

Organic Lawn & Plant Care in Fairfield County, CT

Where eco-friendly sprays fit, what they handle well, and how to keep a yard healthy without a blanket spray program.

Read the guide →
Mature trees and landscaping on a Fairfield County property
September 2026 · Pest & Tree Care

Spotted Lanternflies in Connecticut: What Homeowners Should Do

How to spot them, what they stress in local yards, and the seasonal steps that reduce next year's hatch.

Read the guide →
Bluestone patio in a Fairfield County backyard
July 2026 · Masonry & Hardscape

How Much Does a Paver Patio Cost in Fairfield County, CT?

Real 2026 price ranges for pavers and bluestone, what drives a quote up or down, and what a good estimate includes.

Read the guide →
Front garden planting from a BREN Landscaping job
July 2026 · Planting & Care

When Is the Best Time to Plant Trees and Shrubs in Connecticut?

Why early fall beats spring in our climate, what to plant when, and how to keep new plantings alive.

Read the guide →

See all Advice articles

Good to Know

Questions we hear a lot.

What areas does BREN Landscaping serve?

We're based in Fairfield, CT and work throughout the surrounding towns — Westport, Southport, Weston, New Canaan, Greenwich, Darien, and neighboring Fairfield County communities.

Do you charge for estimates?

No — on-site estimates are always free. Call (203) 895-3458 and Dennis will walk the property with you, talk through ideas, and follow up with a clear written quote.

Who does the work on my property?

Dennis Leahy is the owner you talk to. He quotes the job and oversees it. His team does the work — people he knows, who know how BREN builds.

Do you handle both design and construction?

Yes. BREN is a design-build company. Dennis quotes the design and oversees the job. His team builds it — plans, plantings, stonework, lighting, and ongoing care.

Are you licensed in Connecticut?

Yes. BREN Landscaping is licensed under CT HIC.0579567 and works Fairfield, Westport, Southport, Weston, New Canaan, Greenwich, and Darien.

When should I book a landscaping project in Fairfield County?

Spring and fall fill up fastest. For patios, firepits, and other masonry projects, reaching out a season ahead is ideal — but call anytime and we'll find a slot that works.

Get In Touch

Let's talk about your yard.

Dennis is usually on a job site, so the fastest way to reach him is a text.

Text Dennis

Or call (203) 895-3458

Email Dennis.BrenLandscaping@gmail.com
Service Area

Fairfield, Westport, Southport, Weston, New Canaan, Greenwich, Darien

Hours

Mon–Sat, 7am–6pm

License

CT License: HIC.0579567

Get a Free Quote

Tell us a little about your project and we'll get back to you within one business day.