Quick Answer
Landscape design moves through 5 phases: site analysis (measure and map what is there), programming (decide what the yard needs to do), concept (the loose sketch), schematic (the dimensioned plan), and planting plan (the species list with quantities). Skipping site analysis is the most common mistake — every decision downstream depends on knowing your soil, sun, drainage, and existing trees. Spend the most time on phases 1 and 2; phases 3-5 are where a designer earns their fee.
Detailed Guide
Phase 1 — Site analysis
Site analysis is the homework that makes every later decision possible. Spend a weekend on it before you call a designer; the designer will redo parts of it, but the conversation goes ten times faster when you arrive with a marked-up base plan instead of a blank lot.
Measure the lot. Pull the property survey from your closing documents or your county GIS portal (most counties publish parcel data with property lines and dimensions). Sketch the lot on graph paper at 1 inch = 10 feet, or use a free tool like SketchUp Free or even Google Drawings. Mark the house footprint, driveway, walkways, fences, and existing trees with trunk caliper (diameter at 4.5 feet above grade) measured to the nearest inch.
Map sun and shade. Sun exposure is the single biggest constraint on what will grow where. Photograph the yard from a fixed point at 9 a.m., noon, and 4 p.m. on a clear day in late spring and again in late summer. Mark on the base plan: full sun (6+ hours direct), part sun (4-6 hours), part shade (2-4 hours), full shade (under 2 hours direct). Re-check after major trees leaf out — what reads as full sun in March is part shade in July.
Test the soil. Pull samples from 4-6 spots, 4-6 inches deep, mix them in a clean bucket, and send 2 cups to your state cooperative extension lab. Cost runs $15-$30 per test. The report gives pH, organic matter percentage, and macronutrient levels (N, P, K), plus amendment recommendations. Soil pH is the silent killer — azaleas, blueberries, and rhododendrons want pH 4.5-5.5; lavender and Russian sage want 6.5-7.5; planting both in the same untested bed wastes money on whichever side doesn't thrive.
Check drainage. Dig a 12-inch hole, fill with water, time how long it takes to drain. Under 4 hours = well-drained sandy or loamy soil. 4-12 hours = average. Over 12 hours = poor drainage, and any plant rated "well-drained soil required" will die there. Watch the yard during the next hard rain — note where water pools, where it runs off, and where it leaves your property. This information drives whether you need French drains, swales, or rain gardens before plant selection matters.
Locate utilities. Call 811 (free national one-call line) at least 3 business days before any digging. Mark gas, electric, water, sewer, cable, and irrigation lines on the base plan. You cannot design around what you cannot see — and hitting a gas line during a DIY install is a $5,000-$15,000 mistake plus an evacuation.
Catalog existing trees. Trees are the most expensive element to add and the most valuable to keep. For each tree over 4-inch caliper, note: species (use an app like iNaturalist or PlantNet to confirm), trunk diameter at 4.5 feet, canopy spread, condition (deadwood percentage, trunk wounds, root flare visibility), and critical root zone (1.5 feet of radius per inch of trunk diameter — a 10-inch tree has a 15-foot critical root zone where construction will damage roots). Hire an ISA-certified arborist for a $200-$400 tree-health assessment before any project that grades near mature trees.
Phase 2 — Programming
Programming is the list of jobs the yard has to do. Write it before any sketch. A program for a typical young-family back yard might read:
- Patio for dining table, 6 chairs, and a grill — 250-350 sq ft
- Lawn area large enough for a 10x10 play tent and a soccer ball — 800-1,200 sq ft
- Privacy screen along the east property line (neighbor's second-floor window)
- Two raised beds for vegetables, sun-checked location
- A path from back door to gate that works in shoes, not just sandals
- Dog-tolerant groundcover in the shaded corner where grass dies
- Storage for trash bins, hose reel, and bikes
Programming forces decisions before they become expensive change orders. A yard that needs both a 25-foot privacy screen and a 30-foot maple as a focal point cannot have both in the same 40-foot run — the programming step is when that conflict surfaces.
Phase 3 — Concept
The concept is the loose sketch — bubble diagrams, traffic flow arrows, sun and view labels. Two or three concept options are normal. The concept is not a planting plan; it is a spatial argument about what goes where and why. A designer charges a separate fee for concept work ($400-$1,500) because this is where 80% of the design decisions actually get made.
Read the concept against the program. Does the patio actually fit the furniture? Does the lawn shape support a play tent without crushing beds? Does the privacy screen block the second-floor window from where you sit, not just from the property line? Push back at this stage — moving a 20-foot bed line on paper is free; moving it after install is $2,400.
Phase 4 — Schematic
The schematic is the dimensioned plan drawn at scale (typically 1 inch = 10 feet for a residential lot). It locks down:
- Bed lines with measured dimensions
- Hardscape edges, elevations, and material call-outs (paver brand, SKU, pattern)
- Lawn area with sq ft total
- Major tree locations with mature canopy circles drawn (not nursery-size — 20-year mature size)
- Grading changes with cut-and-fill volumes
- Drainage routing (downspout tie-ins, swale paths, dry-well locations)
- Irrigation zone boundaries and head locations
- Lighting fixture locations and transformer placement
The schematic is what gets bid by installers. Three installers bidding the same schematic produce comparable numbers; three installers bidding a hand-wavy concept produce three different scopes and you cannot tell which is best.
Phase 5 — Planting plan
The planting plan is the species list with quantities and container sizes, drawn on the schematic at install spacing. A real planting plan calls out:
- Botanical name (Acer rubrum 'October Glory' — not "red maple") so the nursery substitutes are visible
- Quantity
- Container size (#1 = 1-gallon, #3 = 3-gallon, #15 = 15-gallon, B&B = balled-and-burlapped)
- Spacing on center
- A planting-plan key keyed to a graphic symbol on the drawing
The plan should reflect mature size, not nursery size. A nursery-size #5 viburnum looks reasonable 3 feet from the foundation; mature, it is 8 feet wide and pushing on the soffit. Designers who skip mature-size review create work for the homeowner at year 5-7.
Budget brackets — pick before phase 3
Design expands to fit budget. Set the bracket before the concept phase, not after the schematic.
- $5,000 bracket — Planting refresh, mulch, simple bed-line cleanup, no hardscape, no irrigation install. Hire an APLD designer for a half-day consultation ($300-$600), buy the plants yourself, install with a friend.
- $15,000 bracket — Planting plan, mulch, a small flagstone or paver landing (60-100 sq ft), basic landscape lighting (6-8 fixtures), drip irrigation for new beds. Hire an APLD designer for a full schematic ($1,500-$3,000), hire a contractor for install.
- $40,000 bracket — Patio (200-300 sq ft), beds, planting plan, irrigation refresh, lighting, a small water feature or fire feature. APLD designer or junior RLA, mid-tier contractor. Permitting likely on patio if HOA review applies.
- $80,000 bracket — Patio plus retaining wall, full irrigation install, custom planting plan, lighting design, drainage rework. RLA recommended because you are crossing the threshold where permits are likely (retaining wall over 4 feet, grading change over 50 cubic yards) and stamped plans are required.
- $150,000+ bracket — Pool surround, outdoor kitchen, multiple hardscape elevations, full property design. RLA required for permit work; consider a design-build firm so design and construction are one accountability chain.
When to DIY, when to hire APLD, when to hire RLA
DIY is appropriate when the project is a planting refresh under $5,000 with no grading, no irrigation install, no hardscape over 100 sq ft, and no permit involvement. The risk is your time and a few hundred dollars in plants you may have to replace. Plenty of homeowners do excellent garden design themselves — the only requirement is doing the site analysis honestly.
Hire an APLD-certified designer (Association of Professional Landscape Designers — credential by portfolio review and exam) when the project is residential, no permit-stamped plans required, budget is under $50,000. APLD designers handle planting design and small-scale hardscape competently and charge less than RLAs because they are not carrying the licensing overhead.
Hire a Registered Landscape Architect (RLA) when stamped plans are required (most jurisdictions require an RLA stamp on plans involving grading over 50 cubic yards, retaining walls over 4 feet, or stormwater management), when the project crosses into commercial scale, or when budget is over $80,000. RLAs are state-licensed; verify the license number on your state board of landscape architecture lookup.
When to Hire a Pro
Hire a designer when the project involves grading or drainage changes (a wrong slope sends water into the foundation, which is a $20,000 problem to retrofit), when hardscape is over 100 sq ft (base material and edge restraint specifications matter and an installer will lean on the designer's drawing for bid clarity), when you need plans that survive HOA or municipal review, or when the project is over $15,000 (the design fee returns its cost by preventing change orders and substitution surprises). Hire a Registered Landscape Architect specifically when permits require a stamp, when retaining walls exceed 4 feet, or when stormwater management is in scope. A skilled homeowner with a weekend, a graph-paper plan, and a soil test can absolutely handle a planting refresh — but the moment the project touches drainage, hardscape, or irrigation tied to potable water, the designer's fee is the cheapest line item on the budget.
Related Reading
- How to Choose a Landscaper — license verification and contract terms
- Landscaping Cost Guide — design fees and project budgets itemized
- How to Find a Local Landscaper — designer search vs installer search
- Yard Cleanup Services: What's Included and What It Costs
- Lawn care guides by state — regional grass and timing reference