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Family-owned since 1989 · Putnam & northern Westchester

Masonry & Hardscaping Contractor in Mahopac, NY

Retaining walls, patios, walkways and driveways built for a Hudson Valley winter — plus landscaping and commercial snow and ice management across Putnam and northern Westchester County. 37+ years, our own crews, and a written estimate before anyone picks up a shovel.

  • Family-owned, 37+ years
  • Fully insured, residential & commercial
  • Free written estimates
  • Our own crews — no subcontracted labour
Call 845-470-6093See what we do

Get a free estimate

Tell us what you need and we'll call you back — usually the same day.

No obligation. We’ll call to talk it through before anyone comes out.

Thirty-seven years of it

Colonial has been working in Putnam and northern Westchester since 1989 — long enough that a good deal of the work now is going back to properties we built the first time.

37+

Years in business

25+

People on the crews

2,500+

Projects completed

What we do

Three things, and they are the same three things we did in 1989

Optimise what is already there, build what is missing, and keep it open in winter. Most properties need two of the three; almost none need all of it at once.

A straight paver entry walk with a darker charcoal border leading to the covered entrance of a low public building.

01 — Masonry

Masonry & Hardscaping

Walls, patios, walkways, driveways and structural masonry — built on a base that holds through a Hudson Valley winter.

  • Retaining walls
  • Stone & paver patios
  • Walkways & driveways
  • Brick & block masonry
  • Concrete services
Masonry & Hardscaping
Five plow trucks with blades down, a backhoe and a spreader staged in a snow-covered yard before a storm.

02 — Snow & Ice

Commercial Snow & Ice Management

Seasonal contracts for property managers, HOAs, retail centers and medical campuses — plowed, salted and documented before the doors open.

  • Commercial snow plowing
  • Ice control & salting
  • Sidewalk & walkway clearing
  • Parking lot plowing & stacking
  • 24/7 storm monitoring
  • Seasonal contracts
Commercial Snow & Ice Management
A wide, freshly mown lawn with visible mower stripes running back to a mature treeline, with ornamental grasses and shrub beds along its edges and a small barn-roofed shed at the right.

03 — Landscaping

Landscaping

Design, grading, drainage and planting — the landscape side of a company that has been building the hardscape for 37 years.

  • Landscape design & installation
  • Outdoor living spaces
  • Drainage & grading
  • Plantings & lawn renovation
  • Seasonal property maintenance
Landscaping

Recent work

Photographs from our own jobs. We have not captioned these with towns, because the records that came with them do not say which town each one was in — and a made-up location under a real photograph is not worth the credit it would buy.

A freshly laid blacktop driveway running past a white clapboard house, edged with a course of granite cobble against a bed of river stone.
Blacktop driveway with a granite cobble edge
A natural stone retaining wall under construction, with poured concrete pier footings visible in the excavated trench beside it.
Stone wall over poured pier footings
The first courses of a concrete block wall laid to line in an excavated trench, with safety cones and tape around the work.
Block wall, first courses laid
A wide, freshly mown lawn with visible mower stripes running back to a mature treeline, with ornamental grasses and shrub beds along its edges and a small barn-roofed shed at the right.
Mown lawn and kept beds running back to the treeline
A pale porcelain paver patio with a charcoal border, curving up to paver steps and a stone pier at a house entrance.
Porcelain patio with paver steps
A worker with a breaker cutting out a failed concrete sidewalk section beside a road, with an excavator and new slabs staged nearby.
Curb and sidewalk replacement, winter
See the work by service

Where we work

Four towns, and each one builds differently

A lakefront lot in Mahopac, a ledge outcrop in Yorktown and a Woodbridge-loam slope in Cortlandt Manor are three different jobs wearing the same description. These pages say what changes.

Our yard is at 45 Sprout Brook Rd, Cortlandt Manor, NY 10567, which is why Cortlandt Manor gets the fastest response and why the snow route starts there.

What people say

These come straight from our review profile — we do not edit them and we cannot, which is rather the point.

Tell us what you're trying to do

A wall that's leaning, a patio you've been meaning to put in, a lot that has to be clear by seven in the morning. Call us, or send a couple of lines and we'll call you.

Call 845-470-6093Request an estimate