By Sean Alvarez, President — Perennial Gardens Bedford
Most Westchester homeowners considering a significant landscape project arrive at the first consultation unsure what to expect. What does a landscape architect actually do? How do they differ from landscape designers and landscape contractors? How does the project run from first call to finished installation? What does the homeowner's work look like? The answers are rarely explained well by the industry because the industry assumes homeowners already know. After three generations of running landscape construction projects across northern Westchester, here's what we've learned about how to work with a landscape architect effectively — both as professionals and, in many of our projects, as the design-build firm delivering the work.
The Vocabulary That Matters
Landscape architect. A licensed professional with specific education (typically a Master of Landscape Architecture degree) and state licensure. Qualified to design, engineer, and supervise landscape construction at scale. Designs that involve grading, drainage, structural elements, and significant permits typically require landscape architect involvement.
Landscape designer. Broader term. May or may not have formal education or licensure. Skilled landscape designers can produce excellent work for many residential projects, but lack the engineering qualifications for complex structural work.
Landscape contractor. The firm or individual that executes the installation. May or may not also design. Some contractors are also designers; some are not.
Design-build firm. A single entity that provides both design and construction services under one contract. Perennial Gardens operates this way — our design team and construction team work together from the first consultation. Many of our projects include licensed landscape architects on the design team.
Design-bid-build. The alternative model. An independent landscape architect produces a design, then the homeowner bids the design out to multiple contractors for installation. Traditional but sometimes inefficient for complex projects.
The American Society of Landscape Architects publishes guidance on when landscape architect licensure is legally required and when it's preferred.
Design-Build vs. Design-Bid-Build
Both models work. Each has trade-offs.
Design-build advantages
Integration. The design team understands construction feasibility and costs from the start. The construction team understands design intent without translation. Communication loss between design and execution is minimized.
Accountability. Single point of responsibility for both design and execution. Issues that arise during construction don't require finger-pointing between separate firms.
Speed. Design phase can parallel early construction work (permits, site preparation). Sequential models add weeks or months.
Cost control. Design decisions are informed by real-time cost feedback. Surprises at bid time are rare because costs are known throughout design.
Design-bid-build advantages
Independent design. The designer has no financial interest in construction, so recommendations aren't shaped by what's profitable to build.
Competitive pricing on construction. Multiple contractors bidding on the same design can produce competitive pricing for straightforward work.
Separation of concerns. Clear separation between who designs and who builds. Preferred by some homeowners who want to evaluate designers independently of contractors.
When design-build wins
Complex estate projects with integrated hardscape, pools, plantings, and structural elements. Projects where design-construction feedback is valuable. Projects where speed matters.
When design-bid-build wins
Straightforward installation of an already-clear design (a replacement patio, a defined planting refresh). Projects where homeowners want to evaluate design and construction separately.
The Design Process in Detail
Regardless of model, the design process for a significant Westchester landscape project typically runs:
Phase 1: Initial consultation
A 1-2 hour site visit. The designer walks the property with the homeowner, learns what's working and what isn't, hears the homeowner's goals, discusses scope and budget range, and identifies high-level possibilities. No specific design yet — this is scoping and alignment.
Phase 2: Site analysis
Detailed analysis of the property. Topographic survey if not already existing. Soil assessment. Sun and wind exposure study. Drainage patterns. Existing plant inventory. Utility location. Zoning and regulatory constraints. This phase takes 1-4 weeks depending on property complexity.
Phase 3: Concept design
Early design alternatives — sometimes two or three different conceptual approaches to the same brief. Presented as hand sketches or rough digital renderings with planting palette direction, hardscape approach, and spatial organization. Homeowner reacts; designer iterates. 2-6 weeks.
Phase 4: Schematic design
Chosen concept developed into more detail. Plant selections specified at genus/species level (cultivar specifications come later). Hardscape materials and patterns locked. Basic grading and drainage indicated. Enough detail for homeowner alignment and early permit conversations. 4-8 weeks.
Phase 5: Design development
Final design detail. Specific cultivars specified. Structural details for walls, patios, features. Construction drawings prepared. Permit applications finalized. Bidding documents if design-bid-build. 4-12 weeks.
Phase 6: Permits
Town permits, wetland permits (if applicable), easement coordination, utility coordination. Typical duration: 4-12 weeks depending on town and complexity.
Phase 7: Construction
Installation of the design. Duration varies enormously by scope — small projects 4-8 weeks, estate-scale projects 3-12+ months. See our master-planned vs. phased landscape article for sequencing considerations.
Phase 8: Installation supervision
Design team oversight during construction. Issues that arise (unexpected subsurface conditions, material substitutions, design refinements) are resolved in real-time. In design-build, this is integrated; in design-bid-build, this can be an extra service.
Phase 9: Planting establishment
Post-installation care. Warranty period. Horticultural coaching for the homeowner. First-year plant replacements if needed. 6-24 months depending on scope.
What the Homeowner Contributes
Effective collaboration with a landscape architect or design-build firm requires specific inputs from the homeowner.
Clear goals. Not "make it beautiful" but specific outcomes: "I want to be able to host 50 people for my daughter's wedding in 2028." "I want a garden my grandchildren can run through." "I want to be able to have coffee outside every morning from May to October." Specific goals drive specific design.
Honest budget range. The designer can work within almost any budget, but needs to know the range. Designs scaled to a modest renovation differ materially from designs scaled to a comprehensive estate transformation. Holding the budget private forces the designer to guess.
Aesthetic references. Photos, Pinterest boards, magazines, gardens the homeowner has visited. The designer needs to understand the homeowner's taste. Saying "I don't know what I like" isn't useful; "I love English cottage gardens but not anything too formal" is.
Site constraints. Information about existing conditions — soil problems, drainage issues, past failed plantings, neighboring property considerations, maintenance preferences, deer pressure, pet considerations.
Decision-making timeline. When does the homeowner need to make decisions? Some projects run on fixed schedules (new home completion, event deadlines). Others are flexible. Clarify upfront.
Availability for walks. Site walks with the designer happen at several points during the process. Homeowner availability accelerates the process.
Questions to Ask a Landscape Architect or Design-Build Firm
During the initial consultation and before hiring:
1. "Can you show me a completed project similar in scope to what I'm considering?" Portfolio review. A firm that's done estate landscapes can show you; a firm that hasn't can't.
2. "Who on your team will I work with, and will that change over the course of the project?" Ideal: the person you meet at consultation is the person who designs and oversees installation.
3. "What's your process for cost estimating, and when will I see a firm number?" Design-build: typically firm pricing by schematic design. Design-bid-build: firm pricing only after bidding.
4. "What permits will my project need and who coordinates them?" Complex projects in Westchester County often require multiple permits. Permit management should be scope-included, not homeowner-managed.
5. "What's your warranty on plantings and hardscape?" Industry standards vary. Expect specific answers.
6. "How do you handle change orders during construction?" Inevitable that things change. Clear process prevents disputes.
7. "What's your relationship with horticultural specialists?" For significant plantings, the Cornell Cooperative Extension of Westchester County and similar local expertise should be part of the design team's network.
Red Flags
Watch for:
- Vague timelines ("a few months") without specifics
- Unwillingness to provide references or portfolio
- Sub-standard design documentation (hand sketches where construction drawings are needed)
- Lack of licensing where legally required
- Pressure to sign without detailed proposal
- Cost estimates without detail ("total is $X" without line items)
Frequently Asked Questions
Does my project require a licensed landscape architect?
Depends on scope. Simple projects (replacement patio, planting refresh) typically don't. Projects involving structural elements (retaining walls above code thresholds, significant grading), permits beyond basic building permits, or formal engineering often require landscape architect licensure.
How much does landscape architect service cost?
Typically a percentage of total project cost (5-15% for design-bid-build), fixed fee, or integrated into design-build pricing. We don't publish fixed pricing — every project is scoped individually. See our landscape cost article for context.
Can Perennial Gardens work with an outside landscape architect if I've already hired one?
Yes. We regularly execute designs created by other landscape architects as part of design-bid-build workflows. The process works well when the design documentation is complete and communication is clear.
What size project justifies a landscape architect?
No specific threshold, but generally: projects requiring permits beyond basic, involving structural elements, exceeding typical residential scope, or on properties where future development is planned. When in doubt, a consultation clarifies whether the project warrants architect involvement.
For estate landscape projects in Westchester — design-build execution with integrated design and construction, or coordination with an independently-hired landscape architect on design-bid-build projects — Perennial Gardens' landscape practice handles both models. Reach us through the contact page for an initial consultation.
