Warren County · Washington Township, NJ

Retaining Walls and Patios in Washington Township, Warren County

Washington Township surrounds Washington Borough with suburban neighborhoods and country lots on rolling, sloped ground. Turning a slope into usable outdoor space is the job we do most here.

  • 4.9 from 145 Google reviews
  • Family-owned, 25+ years
  • NJ HIC #13VH09797900
Large circular paver patio with contrasting border behind a home

This page covers Washington Township in Warren County, not the borough at its center. If you live in the older downtown, our Washington Borough page is the one for you. The township wraps around the borough with a mix of subdivisions, many of them built in recent decades, and older homes and farmland toward its edges, including the communities of Brass Castle and Port Colden. Lots are larger than in the borough, and many of them slope noticeably from the street to the back of the yard.

Making a sloping backyard usable

A two story house on a rolling lot often has a walkout basement and a back lawn that drops away. That is a common pattern here, and it is the reason retaining walls are such a big part of our work in the township. One well placed wall can create a flat terrace off the kitchen. Two or three shorter walls can step down to a lower patio by the walkout door, with steps built into the walls to connect the levels.

Block retaining wall holding a new gravel terrace behind a ranch home

Every wall gets a compacted base, drainage stone and a pipe to carry water away, because the soil behind a wall on a slope is always pushing.

Patios, pool decks and fire pits

With the slope handled, the rest of the yard opens up. A paver patio with a seating wall and fire pit, a walkway around the house or a pool deck with stone coping all fit naturally on a terrace. Many owners build in phases: walls and patio first, then a fire pit or pool surround once the space is in use.

Planning points for the township

  • Township building department. Separate from the borough. Wall height and location affect what is required.
  • Utilities and septic. Many homes outside the borough have septic systems. Mark them before design.
  • Drainage to neighbors. Walls and patios must not push water onto the lot below.
  • Access. On sloped yards we plan how equipment reaches the back without rutting the lawn.

Washington Township is part of our Warren County service area, together with nearby Mansfield and Franklin Township. When you are ready to plan your yard, schedule a free estimate.

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Real reviews from real neighbors

Every review here was written on Google by a Pro One customer.

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  • Masonry

    “Fantastic experience from start to finish. The crew was knowledgeable, hardworking, and respectful of our property. The masonry work looks amazing and has completely transformed our space. Would absolutely hire again”

    Olainy Soto

  • Sidewalk repair

    “I got a quote from Pro One construction to repair a large portion of sidewalk on my property that a tree was pushing up and heaving the sidewalks to a dangerous level. There estimate was the best out of 3 and they did a professional job. Would recommend them to anyone needing sidewalks repaired!”

    A Everett

  • Google review

    “Matt and his team were excellent! If I could give 10 stars they would’ve received 11. Very neat; cleaned everything up. Fantastic group of guys.”

    Damian Jata

  • Driveway

    “Great experience with Matt,he came and give us a quote about or driveway.We liked the way how Matt handled the project and how it came out in the end. Definitely suggest them!”

    Gloris Bulica

  • Steps & retaining wall

    “Pro one construction repaired my steps and retaining wall amazing work very professional and great quality.highly recommend”

    Olha Vinnichenko

  • Roof replacement

    “Matt and his crew can by my mechanic shop in Union and did a full roof replacement. Very happy with them, I haven’t had a leak since.”

    Ardit Lita

  • Patio

    “Very happy with our new patio 10/10”

    raj Gupta

FAQ

Washington Township, NJ FAQs

Can’t find your answer? Call us at (973) 874-8169.

Is this page for Washington Township or Washington Borough?

Washington Township. The township and the borough are separate municipalities with their own building departments. If you live in the borough, see our Washington Borough page. We work in both.

Which Washington Township is this?

The one in Warren County, around Washington Borough. New Jersey has several Washington Townships in other counties, and their rules differ.

How tall can a retaining wall be before it needs an engineer?

It depends on the township and on what the wall supports. Taller walls and walls near driveways, pools or structures often need a permit and an engineered design. We confirm the requirements with the township before building.

Can we add a pool deck to the patio later?

Yes. We can set the patio grades and materials now so a future pool deck ties in cleanly, then build the deck and coping when the pool goes in.

Warren County, NJ

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