Summerhill Landscapes

What Summerhill Landscapes does

Summerhill Landscapes is a private, founder-led landscape construction and maintenance firm founded in 1993 by Declan Blackmore in Sag Harbor, New York, serving high-net-worth residential property owners in the Hamptons and surrounding Northeast regions. The company delivers custom landscape construction, ongoing maintenance, and in-house design services, supported by specialized modules including flower and vegetable gardens, landscape lighting, plant health care, lawn care, and irrigation. Its technical backbone includes Summerhill Lab, an in-house facility performing soil chemistry and composition testing, plant tissue diagnostics, GIS analytics, and ecological analytics, alongside SHL Farms, a 100+ acre company-owned tree farm producing native plants and sculpted allées in the European tradition for plant sourcing control.

Revenue is generated through four streams: quote-based landscape construction projects, recurring landscape maintenance subscriptions, professional design services delivered by an in-house team, and plant material sales from SHL Farms. The go-to-market is enterprise field sales targeting luxury property owners in the Hamptons (Sag Harbor, Southampton, Sagaponack, Bridgehampton, East Hampton), with project acquisition driven by collaborative relationships with top-tier architecture and landscape-architecture firms including Bates Masi Architects, COOKFOX Architects, Reed Hilderbrand, Raymond Jungles Studio, and Rees Roberts + Partners.

The firm remains family-owned, with Declan Blackmore as President and Ann Blackmore as Vice President, and has professionalized its operating team since 2023 with a first CFO, HR, accounts payable, and purchasing functions. Operations have extended beyond the Hamptons into New York City, Hudson Valley, and Connecticut via a Summerhill Associates division led by Partner Tom Volk. The workforce draws on 350+ years of combined field experience and 100 years of college-level horticulture education, sustained by a multinational internship program anchored by Kildalton Agricultural College in Ireland.

Name

Summerhill Landscapes

Legal name

Summerhill Landscapes, Inc.

Website

https://summerhilllandscapes.com

Company type

Private

Founded year

1993

Operating status

Operating

Headcount range

51–100 employees

Short description

Summerhill Landscapes, founded in 1993, is a private landscape construction and maintenance firm serving high-end residential property owners in the Hamptons and Northeast with custom design, construction, and ongoing maintenance backed by an in-house horticultural lab and 100+ acre tree farm.

Ownership category

akta.pro rank

Product category

Residential Landscape Construction and Maintenance Services

NAICS

Landscaping Services (561730)

akta.pro primary industry

Residential Landscape Design (HSAIABAA)

Keywords

• Landscape construction services
• Residential landscaping
• Garden maintenance services
• Landscape design
• Horticulture services

Headquarters

HQ city

Sag Harbor

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Marketing or Sales, Infrastructure

Revenue model

1. Landscape Construction: Custom landscape construction services for high-end residential properties including garden construction, landscape architecture execution, and specialized features such as living rooftops.
2. Landscape Maintenance: Ongoing maintenance services for constructed landscapes including lawn care, irrigation management, plant health care, and seasonal garden enhancements.
3. Landscape Design: Design services delivered by in-house design team working collaboratively with clients and external architects/designers.
4. Plant Material Sales: Sale of plants and trees from their own tree farm operation (SHL Farms).

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Summerhill Landscapes designs, constructs, and maintains luxury residential landscapes for high-end property owners in the Hamptons and surrounding regions. The firm provides custom landscape design, full-scale landscape construction (including living rooftops and specialized garden features), and ongoing landscape maintenance, supported by an in-house plant tissue and soil testing laboratory (Summerhill Lab) and a 100+ acre company-owned tree farm (SHL Farms) that supplies plant material.

Product overview

Summerhill Landscapes is a landscape construction and maintenance company founded in 1993, offering a comprehensive suite of services for high-end residential properties in the Hamptons and surrounding regions. The core offering comprises landscape construction, landscape design, and ongoing maintenance services. These are supported by specialized service modules including flower gardens, vegetable gardens, landscape lighting, plant health care, lawn care, irrigation, and the company's own SHL Farms tree farm spanning over 100 acres. The company also operates Summerhill Lab providing analytical services (soil testing, plant tissue testing, GIS analytics, ecological analytics), and maintains a multinational internship program. The portfolio is delivered by a team of over 350 years of combined field experience, serving clients across Sag Harbor, the Hamptons, New York City, Hudson Valley, and Connecticut.

Differentiator

Problem solved

Functional benefit

Products and services

• Landscape Construction Full-scale custom landscape construction for luxury residential properties, including plantings, hardscapes, outdoor structures, living rooftops, flower gardens, and vegetable gardens. Targeted at high-end residential property owners in the Hamptons and surrounding regions.
• Landscape Maintenance Recurring maintenance services for installed landscapes, including lawn care, irrigation management, plant health care, and seasonal garden enhancements, delivered at construction-quality standards. Targeted at the same high-end residential clients whose landscapes the firm builds.
• Landscape Design In-house landscape design services creating custom outdoor environments tailored to client preferences and property characteristics. Led by the in-house design team in collaboration with homeowners and external architects and landscape architects.
• SHL Farms Plant Material Sale of plants and trees grown on the company's own 100+ acre tree farm (SHL Farms), including native plants and European-tradition sculpted allées such as cherry trees and ornamental specimens. Provides in-house plant sourcing and quality control for Summerhill projects.
• Summerhill Lab Analytics In-house analytical services providing soil chemistry and composition testing, plant tissue nutrient and disease diagnostics, GIS-based landscape analytics, and ecological context analytics. Supports planting and maintenance decisions for high-end residential landscapes.

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

16 partnerships are on record, tiered minor and core.

• Araiys DesignminorStrategic or Co-development PartnerLandscape architecture firm listed as collaborator on Summerhill projects
• Ashley Christopher Landscape ArchitectureminorStrategic or Co-development PartnerLandscape architecture firm listed as collaborator on Summerhill projects
• Bates Masi ArchitectscoreStrategic or Co-development PartnerFeatured in multiple projects including Morris Cove project featured in Architectural Record; ongoing collaborative relationship on luxury Hamptons properties
• CookFox ArchitectscoreStrategic or Co-development PartnerFeatured in Dwell Magazine project; regular collaborator on architectural projects requiring landscape expertise
• Raymond Jungles StudiominorStrategic or Co-development PartnerLandscape architecture firm credited on living rooftop project; notable collaborator on high-end designs
• Reed HilderbrandminorStrategic or Co-development PartnerLandscape architecture firm listed as collaborator on Summerhill projects
• Rees Roberts + PartnersminorStrategic or Co-development PartnerLandscape architecture firm credited on meadow path project
• Sawyer|BersonminorStrategic or Co-development PartnerLandscape architecture firm listed as collaborator on Summerhill projects
• Stimson StudiominorStrategic or Co-development PartnerLandscape architecture firm credited on multiple projects including stone and moss design work
• Devore AssociatesminorStrategic or Co-development PartnerLandscape design firm credited on cutting garden and tree-lined dining projects
• Office of ArchitectureminorStrategic or Co-development PartnerArchitecture firm credited on Hamptons architectural project
• Patrick Cullina Horticultural DesignminorStrategic or Co-development PartnerHorticultural consulting partner credited on driveway and living rooftop projects
• Men At Work ConstructioncoreImplementation/ SI/ Consulting PartnerConstruction company partnered on multiple landscape projects including stone and moss design work
• Mark Lumley BuilderminorImplementation/ SI/ Consulting PartnerGeneral contractor partnered on living rooftop project
• Kildalton Agricultural CollegecoreStrategic or Co-development PartnerIrish horticultural college; source of founder Declan Blackmore's education and pipeline for internship program
• SHL FarmscoreStrategic or Co-development PartnerCompany's own tree farm operation providing plant materials; over 100 acres in production growing native plants to sculpted allées

Scale indicators6 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Edmund Hollander Landscape Architects: New York-based luxury landscape architecture and design firm serving high-end residential estates in the Hamptons and beyond. Comparable because both firms occupy the top tier of HNW residential landscape design and frequently collaborate with the same architect partners.
• LaurelRock Landscapes: Connecticut-based design/build/ maintenance firm serving affluent residential clients in Fairfield County and surrounding areas. Comparable as a regional luxury residential landscape construction and maintenance peer in the same NE HNW corridor.
• Sponzilli Landscape Group: Northern New Jersey luxury residential landscape design, construction, and maintenance firm. Comparable because it competes for similar HNW clients in the greater New York metropolitan area with similar end-to-end design-build-maintain services.
• R&S Landscaping: New Jersey-based landscape design, installation, and maintenance firm serving affluent residential clients. Comparable because it competes in the same NE HNW residential market with a similar full-service construction-plus-maintenance model.
• Natural Environments: Mid-Atlantic landscape design, build, and maintenance firm serving upscale residential properties. Comparable as another regional residential landscape peer with design-build-maintain offerings for HNW homeowners.

Broad incumbents

• Mariani Landscape: Established Chicago-area luxury residential and commercial landscape firm with national scope and a long operating history. Comparable as a broader incumbent offering design, construction, and maintenance services to high-end clients, but at a larger scale and broader geographic footprint.
• Blanchford Landscape Contractors: Multi-decade regional landscape construction and maintenance firm serving high-end residential and commercial clients. Comparable as a broader incumbent operating a similar end-to-end construction-plus-maintenance model, though outside the NE corridor.

Regional players

• Anthony Cusano Landscaping: Long Island-based landscape firm with a strong Hamptons-area residential portfolio. Comparable as a regional peer serving similar HNW homeowners on the East End of Long Island, although with less public emphasis on design-build construction at Summerhill's scale.
• Paul L. I. Landscaping: Long Island-based landscape services firm with presence in the Hamptons region. Comparable as a regional competitor competing for similar residential clients on Long Island, though likely operating at a smaller scale and less luxury-tilted positioning than Summerhill.

Emerging players

• Plant Detectives: Long Island-based plant health care specialist firm. Comparable as an emerging player in the regional plant health care niche that overlaps with Summerhill Lab's plant diagnostics capability, illustrating a potential specialized competitor in Summerhill's backyard.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• Instagraminstagram.com/summerhilllandscapes
• Facebookfacebook.com/summerhilllandscapesinc

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Summerhill Landscapes