--- title: "Harmony Design Group — Landscape Architects & Landscape Designers | Houzz" canonical_html_url: https://www.houzz.com/professionals/landscape-architects-and-landscape-designers/harmony-design-group-pfvwus-pf~939543475 markdown_url: https://www.houzz.com/md/professionals/pf~939543475.md entity_type: LocalBusiness business_name: "Harmony Design Group" category: ["Landscape Architects & Landscape Designers"] image: https://st.hzcdn.com/fimgs/421320710f50c47b_3243-w400-h400-b0-p0--.jpg address: "1520 Pine Grove Ave, Westfield, New Jersey 07090, United States" latitude: 40.6479 longitude: -74.3451 phone: "(908) 264-4440" website: http://www.hdglandscape.com rating: 4.8 review_count: 19 best_of_houzz_awards: 13 followers: 534 last_updated: 2026-09-09 --- # Harmony Design Group Original Houzz profile: [Harmony Design Group](https://www.houzz.com/professionals/landscape-architects-and-landscape-designers/harmony-design-group-pfvwus-pf~939543475) ## Professional summary - **Primary category:** Landscape Architects & Landscape Designers - **Location:** Westfield, NJ - **Serves:** Montclair, Livingston, Westfield, Maplewood, Scotch Plains, Summit, Millburn, Morristown, South Orange, Madison, New Providence, Berkeley Heights, Fanwood, Mountainside, Cranford - **Houzz rating:** 4.8 out of 5 (19 reviews) - **Best of Houzz:** 13 awards (2013–2026), for Design, Service. ## About ### Houzz Badges - Star Houzzer - 5 Star Houzzer - Houzz Influencer - Recommended on Houzz - 50,000 Ideabook Saves - High-end - Offers Custom Work Harmony Design Group, a New Jersey Licensed Landscape Architecture firm, is committed to providing innovative custom landscape designs that indulge your senses and transform an ordinary yard into a breathtaking landscape oasis. We cultivate lasting relationships with our clients to create better lives and living environments, with emphasis on custom, quality design and workmanship. Our ongoing commitment to customer satisfaction and meticulous planning assures a finished product that will provide a life time of enjoyment. ### Services Provided - Landscape Design - Garden Design - Hardscaping - Landscape Plans - Pool Landscaping - Swimming Pool Design - Gazebo Design & Construction - Outdoor Lighting Design - Deck Building - Landscape Lighting - Outdoor Fireplace - Outdoor Kitchen - Outdoor Living Area - Trellis & Pergola Construction ### Areas Served - Montclair - Livingston - Westfield - Maplewood - Scotch Plains - Summit - Millburn - Morristown - South Orange - Madison - New Providence - Berkeley Heights - Fanwood - Mountainside - Cranford ### Typical Job Cost $30,000 - 1 million ## Business Details | Field | Value | | --- | --- | | Business Name | Harmony Design Group | | Address | 1520 Pine Grove Ave, Westfield, New Jersey 07090, United States | | Phone | (908) 264-4440 | | Website | http://www.hdglandscape.com | | License Number | NJ 21AS00096900 NY 0001972-1 | | Followers on Houzz | 534 | **Social profiles:** - Facebook — http://www.facebook.com/pages/harmony-design-group/163448257225 ## Contact - **Houzz profile:** [Harmony Design Group](https://www.houzz.com/professionals/landscape-architects-and-landscape-designers/harmony-design-group-pfvwus-pf~939543475) - **Website:** http://www.hdglandscape.com - **Phone:** (908) 264-4440 ## Credentials **Certifications & Awards** - NJ Licensed Landscape Architect NJ Licensed ContractorNY Licensed Landscape Architect - **Best of Houzz:** 13 awards (2013–2026), for Design, Service. ## Reviews **Overall rating: 4.8 out of 5 — 19 reviews** *Aspect averages:* - Work Quality: 50.0 - Communication: 50.0 - Value: 50.0 ### Reviews **★★★★★ — HU-324057598, Feb. 2026** > Harmony Design Group has built an incredible reputation in New Jersey for high-end landscape architecture and outdoor living design. I’ve followed their work and have been consistently impressed by the level of detail, professionalism, and thoughtful design they bring to each project. > > Their backyard transformations, retaining walls, patios, and covered outdoor entertainment spaces reflect a true design-build approach. It’s clear they consider grading, drainage, plantings, lighting, and structural integrity from the very beginning rather than treating each element separately. > > If you’re a homeowner in Westfield, Summit, Short Hills or surrounding Union County towns looking for a landscape architecture firm that values craftsmanship and long-term planning, Harmony Design Group stands out in the New Jersey outdoor living space. > > Their portfolio speaks for itself, and their process-driven approach sets them apart from many landscape contractors in NJ. > > Highly recommend taking a look at their work if you’re considering a custom patio, retaining wall, or full outdoor living project. **★★★★★ — Stacey, Dec. 2025** > Harmony Design Group is a class act business with super talented people who really care! > > We hired Harmony for our backyard where we wanted to build a tranquil and natural space where we could chill with family and friends and enjoy our surroundings. Well, Harmony MORE THAN DELIVERED! In addition to doing a top notch job with beautiful plantings, a lovely patio with kitchen and a pergola - the thing that stood out above all else, was their customer focus and service. > > I can't say enough good things about the teams we worked with! Jessica (our project manager) was THE nicest and most professional person I have ever dealt with. She handled everything with an ease and calmness that was so refreshing - something that is so hard to find today. Her landscaping teams really cared about each and every planting they installed, and their work ethic was unmatched. > > We also hired Harmony's lawn maintain team (headed up by Kerri) and once again, we were impressed with the attentiveness and professionalism of her teams. > > These folks are terrific! **★★★★★ — jilldiamant, Dec. 2018** > Harmony Design Group recently completed our complete backyard renovation and we could not be happier! Our backyard has truly reached its potential. Marc and his team were always easily accessible and responsive. We were so happy with their initial plan all the way to completions we cannot wait to enjoy our new outdoor space for years to come! **★★★★★ — Daniel Jemal, Feb. 2018** > We recently worked with Marc and Harmony to transform our backyard from a muddy swatch of dirt and grass to a hidden oasis that included blue stone patios, retaining walls and an outdoor kitchen. From the very beginning, Marc was attentive and thoughtful in his approach and delivered several potential options for the space. We ultimately went with the vision we loved most and Marc coordinated the bid process for the the job to make sure we found who we were looking for. Every detail was looked after by Harmony from finish selections, coordinating deliveries, various project check-in meetings and ultimately to the final completion. We couldn’t be happier with the end product and are certain you will be too! **★★★★★ — Darcy Bracco, Sept. 2017** > We hired Harmony Design Group to do a large project for our new home. This included landscaping the front and back of the property and also lighting. From our first meeting with Marc Nissam, we knew he was the right guy for the job. Marc was patient, diligent and professional throughout the scope of the job. He finished ahead of schedule and we are so pleased with the end result. His creativity and knowledge for landscape design really did put the finishing touches on our new home. We would highly recommend Marc Nissam and HDG!! **★★★★★ — cmazz45, June 2016** > I have been a homeowner in Westfield for 25 years. I can unequivocally state that Marc (HDG) is the most knowledgeable and accomplished landscape designer whom I have ever worked with. > He has amazing vision to look at a property and either create or transform it into the most visually appealing result. > I thought that I had a nice looking manicured pool/patio/yard until Marc renewed it into a more elegant, appealing property. What's more, he had initially inspected the property at the end of the winter > at a complete disadvantage regarding light/growth etc, and yet was able to 100% perfectly recommend the ideal plantings for the property predicting to the month when we would have the color blooms and growth which he had advised. Gentle lighting was added around the whole property and we are beyond satisfied. The HDG affiliated crews were polite, diligent and professional. You must consult Marc for his expert advice. **★ — Iris Trotman, May 2016** > Hi. Marc came to our home. Spent a hour with us. He promised an estimate for doing a landscape design. It has been four weeks and he has not sent anything or called. I would not recommend him. **Comment from Harmony Design Group:** > Sorry for not following up on the meeting we had at your home. The month of May is the busiest weeks of the entire season. We take a tremendous pride in the quality of service we provide our clients but it is a difficult to balance servicing the clients we are already working for and new potential clients during this time of year. We would like a chance to discuss this matter in more detail with you. Please give our office a call or email me direct. **★★★★★ — loristernberg, Dec. 2015** > We hired Marc with a tight deadline to redo our yard for our daughter's Batmitzvah. He succeeded and did a beautiful job. We were very pleased. **★★★★★ — AHD&Co, Dec. 2015** > We have had the pleasure of working with Marc and his team for the past few years on projects together. Marc is alway professional and respectful of our clients dreams. His creativity and talent during the design process and equally as talented leading his team during the construction process, always fine the right solution to the project. As an architect, its important to have a landscape team that can execute the landing of our projects beautifuly. > > We recommend Marc Niesham and his team highly. He is a pleasure to work with. **★★★★★ — HU-353221, Dec. 2015** > My wife and I recently moved into a penthouse with two large fenced in but bare roof top garden areas, and a large balcony overlooking the city. We contracted with the Harmony Design Group to open up these areas. With his first drawing, Marc capitalized on the perfect design for the gardens and balcony. Working with his team they installed panels to cover the fences, planters, plants, sprinkling systems, benches, flooring, lights, lanterns, a statue and a fountain. The results are spectacular, and visitors view the gardens and balcony as the highlight of our home. We are indebted to Marc and his team for bringing their expertise into our lives. **★★★★★ — Raj Pat, June 2015** > I was glad that I chose this Chose Marc Nassim for the Land Scraping Architect. He was very responsive and did a FANTASTIC!!! Job. I highly reccomend Architectural services before you bid out your Job as every Hard Scape Contractor will give you quote according to their design and product. His response was prompt when we had a problem at site and he came over right away so that the project won't get delayed. **★★★★★ — Outdoor Digs LLC, Feb. 2015** > I have used Marc for landscape designs since 2013 when my good friend Matt Rusk of Rusk Enterprises referred him to me. Marc's first design for me was an exceptional landscape design to the entrance of my clients home in Denville NJ. His plan encompassed a full season of color, from constants such as boxwood's, to the vivid bloom of iris' to the perennial grasses which created a soft texture and turned with the fall months. > > Several months later I met Marc out on a large project shooting elevations for a grading plan. Marc is one of the few who landscape architects who is not afraid to get dirty, he truly has field experience. He's not just behind a desk pumping out a million designs a season with little thought or care. His ability to capture a person's dream and add his own creativity produces a final design that is second to none. > > I will be using Marc's firm for years! **Comment from Harmony Design Group:** > Thanks for the excellent review of my company I look forward to working on more projects for you in the future. ## Selected projects - [A Modern Classic!](https://www.houzz.com/hznb/projects/a-modern-classic-pj-vj~7186390) - Location: Westfield, New Jersey - Photos: 9 - Description: Our client was seeking a aesthetic which would include an InGround swimming pool, built in outdoor kitchen, modern gas fire pit, and outdoor TV. Our design team created three distinct areas. A lounge chair seating area, outdoor kitchen snd dinning seating area, and a lounge seating area mkdern gas fire pit. - [Suburban Bliss](https://www.houzz.com/hznb/projects/suburban-bliss-pj-vj~7022389) - Location: Chatham, NJ - Photos: 16 - [Small Yard Big Dreams](https://www.houzz.com/hznb/projects/small-yard-big-dreams-pj-vj~7272265) - Location: Westfield, NJ - Photos: 6 - [Country Getaway](https://www.houzz.com/hznb/projects/country-getaway-pj-vj~6780004) - Location: Mendham, NJ - Photos: 12 - [Home Base](https://www.houzz.com/hznb/projects/home-base-pj-vj~6780038) - Location: Summit, NJ - Photos: 9 - [Elegant and Classic](https://www.houzz.com/hznb/projects/elegant-and-classic-pj-vj~6780076) - Location: Not specified - Photos: 16 - [Impeccable Style with Classic Detailing](https://www.houzz.com/hznb/projects/impeccable-style-with-classic-detailing-pj-vj~2257394) - Location: Westfield, NJ - Photos: 23 - Description: This traditional Hampton's look was achieved using simple lines and traditional high end materials. Contemporary detailing, from the pop out TV in the outdoor kitchen to the electronic entry gate serves to update and enhance the usability of the space while retaining that old school charm. - [Contemporary Spa](https://www.houzz.com/hznb/projects/contemporary-spa-pj-vj~2143358) - Location: Not specified - Photos: 14 - Description: Faced with a challenging and steeply sloping backyard, we mitigated the grade change by installing multi terraced retaining walls. We were able to give the client a pair of dining and entertainment spaces both with beautiful views. The upper level features a dinning room and the lower level features a custom built in spa with water feature wall. The fire place is a Dekko Concrete Fireplace. The Glass tile is Lunada Bay Tile, and the patio and coping are Limestone. - [Modern Hideaway](https://www.houzz.com/hznb/projects/modern-hideaway-pj-vj~1626925) - Location: Not specified - Photos: 4 - [Elegant Resort](https://www.houzz.com/hznb/projects/elegant-resort-pj-vj~1579348) - Location: Millburn, NJ - Photos: 4 - Description: This contemporary resort back yard created a relaxing space for the homeowner to entertain and relax. The circular pool features deck jets illuminated water spouts , the spa is has an all glass interior and the fire feature has an imported stone surround. The patio is natural stone custom made hexagon shaped stones. - [Contemporary Clean Oasis](https://www.houzz.com/hznb/projects/contemporary-clean-oasis-pj-vj~2331159) - Location: Not specified - Photos: 3 - [Timeless Elegance](https://www.houzz.com/hznb/projects/timeless-elegance-pj-vj~44279) - Location: Princeton, NJ - Photos: 6 - Description: Classic Designs often work the best for a traditional style home set on a rural estate in Princeton NJ. For the dining terrace a bluestone patio was installed with a brick inlayed rug. Plantings beds filled with perennials and flowering shrubs surround the patio and lead you down to the swimming pool. Built at existing grade to meet DEP regulations the swimming pool is the centerpiece of the back yard. The walls were installed with Pennsylvania Fieldstone and the pool patio is Blue/ Grey Sandsto… - [Colorful Formal](https://www.houzz.com/hznb/projects/colorful-formal-pj-vj~5994628) - Location: Westfield, NJ - Photos: 11 - [Autumn Getaway](https://www.houzz.com/hznb/projects/autumn-getaway-pj-vj~749823) - Location: Not specified - Photos: 5 - Description: New homeowners wanted to upgrade the existing swimming pool and dated concrete pavers. Located on a scenic lot in Franklin Lakes NJ we worked with the home owners to create a terraced patio featuring an outdoor fireplace and outdoor kitchen. The swimming pool renovation included the installation of a natural stone boulder waterfall. Working with the natural topography we also added an infinity edge to the pool. This allowed the clients to overlook the swimming to to the gardens below. - [Compelling Forms and Rustic Details](https://www.houzz.com/hznb/projects/compelling-forms-and-rustic-details-pj-vj~1265128) - Location: Not specified - Photos: 7 - [Contemparary Pool Design](https://www.houzz.com/hznb/projects/contemparary-pool-design-pj-vj~359378) - Location: Westfield, NJ - Photos: 10 - Description: Harmony Design Group LLC, a New Jersey Landscape Architecture company based in Westfield NJ designed and installed this magnificent contemporary back yard design. The project included a swimming pool with auto cover, gas fire pit, custom design concrete patio, landscape lighting, and plantings. - [Intelligent Design Meets Classic Lines](https://www.houzz.com/hznb/projects/intelligent-design-meets-classic-lines-pj-vj~1450030) - Location: Not specified - Photos: 5 - Description: The challenge of redesigning the driveway and yard of this posh Westfield home was creating unique and usable spaces that are kept separate from the parking area. A long and low natural stone seat wall with LED under lighting snakes through the rear yard, dividing up the patio into seating and dining portions. The installation of a custom fiberglass pergola adds height to the design while tastefully matching, but not overshadowing, the details on the fabulous house. Plantings were used to screen… - [Classic Design](https://www.houzz.com/hznb/projects/classic-design-pj-vj~44277) - Location: Tenafly, NJ - Photos: 6 - Description: The center piece of the back yard was a rectangular swimming pool set on axis with the two rear balconies. The design included a dinning patio with a built in grill and a separate swimming pool patio. In order to connect the landscape to the house the walls were veneered with the same granite stone as the house. Lush gardens with shrub roses and hydrangea surround the swimming pool and patios. This project was a collaboration with CLC Landscape Design. - [Swimming Pools](https://www.houzz.com/hznb/projects/swimming-pools-pj-vj~190642) - Location: Not specified - Photos: 15 - [Contemporary Patio](https://www.houzz.com/hznb/projects/contemporary-patio-pj-vj~1154501) - Location: Not specified - Photos: 4 - Description: This clean modern patio located in Westfield NJ features a stucco outdoor kitchen, dinning area and lounge area. The patio is constructed with 3'x3' buff limestone. The outdoor kitchen features a Lynx Grill, Lynx Sink, Lynx Refrigerator, and Lynx Ice Maker. [See all 48 projects](https://www.houzz.com/professionals/landscape-architects-and-landscape-designers/harmony-design-group-pfvwus-pf~939543475) ## Ideabooks - [Wish List](https://www.houzz.com/ideabooks/165266097/list/wish-list) — 4 ideas - [adge](https://www.houzz.com/ideabooks/5581684/list/adge) — 16 ideas - [Wish List](https://www.houzz.com/ideabooks/165266094/list/wish-list) — 1 idea - [fence](https://www.houzz.com/ideabooks/62925823/list/fence) — 13 ideas - [rustic outdoor living](https://www.houzz.com/ideabooks/110718074/list/rustic-outdoor-living) — 2 ideas - [pools](https://www.houzz.com/ideabooks/5096792/list/pools) — 21 ideas - [wrought iron fence](https://www.houzz.com/ideabooks/73212049/list/wrought-iron-fence) — 7 ideas - [House Ideas](https://www.houzz.com/ideabooks/7851921/list/house-ideas) — 158 ideas - [Napa Style](https://www.houzz.com/ideabooks/75976779/list/napa-style) — 3 ideas - [hdglandscape's Favorites](https://www.houzz.com/ideabooks/2378048/list/hdglandscape-s-favorites) — 23 ideas - [outdoor living spaces](https://www.houzz.com/ideabooks/2983850/list/outdoor-living-spaces) — 36 ideas - [wood storage](https://www.houzz.com/ideabooks/32286154/list/wood-storage) — 3 ideas - [roof top garden](https://www.houzz.com/ideabooks/32286112/list/roof-top-garden) — 4 ideas - [HDG POOLS](https://www.houzz.com/ideabooks/19404730/list/hdg-pools) — 6 ideas - [Liquid project](https://www.houzz.com/ideabooks/5765208/list/liquid-project) — 16 ideas [See all 15 ideabooks](https://www.houzz.com/ideabooks/users/hdglandscape) ## Community Q&A **Q: stone for patio of Hamptons House?** *(in Photo Questions)* Hello, What stone did you use for the patio surface and patio steps of the Hamptons House? It is beautiful. It looks like bluestone but I wondered what exact model or name or quarry - bluestone caries so much. Thanks!!! A: Thanks for your complements of this amazing project. This is Pennsylvania Blue Blue Thermal Bluestone. It is all wet laid so the stone is 1" thick. We get most of our our stone from Wicki Stone or Braen Supply. Let me know if you need any further help with you project. Good luck!! **Q: Backyard walkway** *(in Photo Questions)* Is this thermal bluestone? A: I think so. I can't exactly remember its been several years. **Q: Pool size** *(in Photo Questions)* Hello! What are the dimensions of this pool? Thanks !! A: 20'x24' **Q: I know this house did you design the driveway? What material is it?** *(in Photo Questions)* A: Yes our firm designed the driveway. The curbing is reclaimed granite curbing. The driveway is an exposed aggregate concrete driveway. The apron is Belgium block. If you need any help with your project feel free to contact our office. **Q: what material is the coping made of?** *(in Photo Questions)* A: The coping on this swimming pool is Bluestone **Q: Pool finish** *(in Photo Questions)* Beautiful pool! What was the pool finish color selected? Thank you A: We utilized Hydrazzo plaster for this pool and the color was French Gray. If you need any other assistance on your project please feel free to contact our office. --- *Source: Houzz professional profile. Reflects the profile as of 2026-09-09.*