How to Create a Bill of Quantities (BOQ) for Landscape Projects Using AI Design Tools
Francis Karuri
Landscape & AI Correspondent
A bill of quantities (BOQ) is the bridge between design and construction. It transforms a photorealistic render into an actionable shopping list — exact plant counts, mulch volumes, paver areas, hardscape materials, labour costs, and material sourcing. Traditional landscape designers spend days calculating BOQ data manually from CAD drawings. AI landscape design tools like Hadaa calculate it in real-time as the render is generated, producing a comprehensive, buildable brief in under a minute.
Quick Answer
- What is a BOQ? A detailed list of every material, quantity, and labour cost needed to build your landscape design.
- Why use AI to generate it? AI calculates from visual renders automatically. No manual measurement, no spreadsheet recalculation, no mistakes.
- What goes in a BOQ? Plant counts by species, mulch volumes, paver areas, hardscape costs, labour estimates, and material sourcing recommendations.
- How accurate is it? Typically within 10–15% of final costs when based on current regional pricing and site measurements.
- Can contractors use it? Yes. Hadaa exports BOQ data in contractor-ready formats that integrate into professional estimating software.
What Exactly is a Bill of Quantities?
A bill of quantities is a comprehensive list of every material, labour task, and cost required to construct a landscape design. It sits between the design phase and the construction phase — detailed enough for contractors to generate accurate quotes, clear enough for homeowners to understand what they're paying for.
A complete BOQ for a residential landscape typically includes:
- Plant schedule — Botanical name, quantity, size at planting, and mature size for each species
- Mulch and ground covers — Cubic yards of mulch, wood chips, or gravel by type and zone
- Hardscape materials — Square footage and cost per unit for pavers, flagstone, concrete, or decking
- Structural elements — Pergolas, fences, retaining walls, fire pits — quantity and material specifications
- Irrigation — Sprinkler heads, drip lines, valves, and water volumes required
- Soil preparation — Cubic yards of topsoil, compost, or drainage material needed
- Labour and equipment — Installation hours, machinery rental, site cleanup, and project management
- Material sourcing — Vendor recommendations and lead times for specialty items
Historically, a landscape designer would complete a CAD drawing, then spend hours calculating each of these line items by hand or in spreadsheets. A single change — say, swapping five shrubs for a different species — required recalculating plant costs, mulch volumes, and labour time. The process was error-prone and slow.
AI landscape design tools change this entirely. The BOQ is calculated from the render geometry automatically. Change the design, and the BOQ updates in seconds.
Why AI Design Tools Change BOQ Generation
Three things separate AI-driven BOQ generation from traditional methods:
1. Calculations Happen in Real-Time
When you generate a landscape render in Hadaa, the system simultaneously measures planted areas, counts plants by species, calculates mulch depth and volume, and measures hardscape zones. Every number in the BOQ is derived from the actual spatial geometry of the render — not an estimate, not a guess, but geometry-backed quantities.
This means the BOQ is ready the moment the render is ready. No additional work, no separate calculation step, no delay between design and cost estimate.
2. Changes Propagate Instantly
Using the masking brush to protect an existing tree? The BOQ accounts for it — that area won't be counted as new planting. Editing a design with Smart Fix to add a fire pit? The BOQ recalculates the hardscape totals. Choosing a different plant species? Zone verification, spacing rules, and material costs all update automatically.
This makes it practical to test design scenarios and cost implications side-by-side. What if we use 50% fewer plants? What if we upgrade to flagstone? Each question generates a new BOQ instantly — no spreadsheet, no recalculation, no waiting.
3. Data Is Structured for Handoff
Hadaa exports BOQ data in contractor-ready formats: PDF planting guides with botanical names and quantities, colour-coded blueprints with zone labels and material counts, and shareable links where contractors can access structured data. This eliminates the transcription step — no retyping plant species, no manual recalculation, no room for errors when the BOQ passes from designer to contractor to nursery to installation team.
What Goes Into a Professional Landscape BOQ?
Every line item in a BOQ serves a specific purpose — enabling contractors to quote accurately, source materials efficiently, and execute installation on schedule. Here's what a complete BOQ breaks down:
Planting Schedule
| Botanical Name | Common Name | Qty | Size | Est. Cost |
|---|---|---|---|---|
| Hydrangea arborescens | Annabelle Hydrangea | 4 | 5-gal | $180 |
| Hosta sieboldiana | Patriot Hosta | 12 | 1-gal | $108 |
| Carex oshimensis | Evergold Sedge | 24 | 1-gal | $144 |
| Heuchera villosa | Autumn Bride Coral Bells | 8 | 1-gal | $56 |
Botanical names ensure accuracy — contractors can't accidentally order the wrong species. Sizes standardise sourcing — a "1-gal" Hosta is industry-standard and widely available.
Soil & Ground Covers
-
20 cu yd
Premium mulch (3in depth)
180 sq ft planting beds — $420
-
15 cu yd
Compost soil amendment
Plant establishment — $225
-
200 sq ft
Landscape fabric
Weed suppression — $80
Volumes in cubic yards allow landscapers to order mulch and soil amendments by the truck load. Depths (e.g., "3in") standardise installation quality and water retention.
Hardscape & Materials
-
350 sq ft
Stamped concrete patio
4in depth, broom finish — $2,100
-
120 sq ft
Decomposed granite path
2in depth, edged — $360
-
95 linear ft
Steel garden edging
Borders planting beds — $285
Material specifications (depth, finish, edge treatment) ensure consistency and prevent costly on-site disputes about what "finished" looks like.
Labour & Project Management
-
16 hrs
Site preparation & demolition
Clear existing, grade, amend — $560
-
20 hrs
Planting labour
Hole digging, soil prep, installation — $700
-
24 hrs
Hardscape installation
Concrete, edging, path layout — $840
-
8 hrs
Project management & cleanup
Scheduling, inspections, hauling — $280
How AI Generates Accurate BOQ Data from Visual Renders
The process is deceptively simple to the user but computationally sophisticated underneath. Here's how it works:
Step 1: Spatial Geometry Analysis
When Hadaa generates a landscape render from your yard photo, it builds a spatial model of the scene. Every element — planting bed, patio, pathway, lawn area — has defined boundaries and dimensions. The AI measures these areas in square feet and linear feet with sub-centimetre precision.
Step 2: Plant Placement & Spacing
For planted areas, the system maps every plant in the design — identifying species, mature size, and spacing rules from Hadaa's botanical database. Plants are positioned using horticultural spacing standards (e.g., 3 feet on centre for shrubs, 5 feet for small trees) to ensure they won't crowd each other at maturity.
From this spatial arrangement, the BOQ calculates exact plant counts by species. A 200 sq ft bed planted with 3ft spacing yields roughly 22 plants; the system counts each one and logs the species, size category, and cost.
Step 3: Material Volume Calculation
Mulch and soil amendments are calculated from bed area and depth. A 200 sq ft bed with 3 inches of mulch requires approximately 1.85 cubic yards — the system performs this calculation for every planted zone and sums the totals.
Hardscape materials (pavers, concrete, gravel) are calculated from area and unit cost. A patio measuring 350 sq ft at $6/sq ft for stamped concrete yields a line item: "350 sq ft stamped concrete patio — $2,100."
Step 4: Labour Time Estimation
Labour is estimated using industry-standard productivity rates. Professional landscapers typically:
- • Plant 30–50 plants per 8-hour day (depending on size and soil conditions)
- • Install 400–600 sq ft of hardscape per day
- • Apply mulch at 15–20 cubic yards per day
The BOQ applies these rates to your specific plant counts and material volumes, generating labour hour estimates and costs.
Step 5: Regional Cost Data Integration
The system cross-references your location with regional material pricing databases. Plant costs vary by region (a 5-gallon Hydrangea costs more in Manhattan than in rural Montana). Labour rates differ by market. When Hadaa generates your BOQ, it applies your region's current pricing — not national averages.
The Complete Design-to-BOQ Workflow
Here's how the process works in practice for a homeowner or professional using Hadaa:
Upload & Confirm
Upload 1–12 photos of your yard. Hadaa synthesises an aerial map automatically. Confirm it matches your property.
Pick a Render
Garden Autopilot generates 6 style renders in parallel. You pick your favourite (e.g., Modern Minimalist, Cottage, Mediterranean).
Select Camera Angles
The engine generates 8 camera angle variations of your chosen design. Pick up to 4 to explore further (front view, side view, from patio looking out, etc.).
Get 22 Renders + BOQ
Quick-action edits are added per angle. Result: 22 photorealistic renders, a complete BOQ, a contractor blueprint, and a planting guide — all with two decisions from you.
Export BOQ
Download the BOQ PDF (planting guide) or share a Blueprint link with your contractor. The BOQ includes plant species, quantities, material volumes, and estimated costs.
Send to Contractors
Contractors can take the BOQ directly to nurseries to price materials, or input it into their estimating software to generate a formal quote.
For Professionals
Pro Studio (Core $14/mo or Studio $29/mo) gives independent access to all five engines, allowing you to design from scratch, import sketches or CAD files, or refine existing designs with precision masking and Smart Fix text edits. Every design exports a complete BOQ. For white-label deliverables with your agency branding, upgrade to Studio.
BOQ Accuracy: How Close Is the Estimate?
AI-generated BOQs from tools like Hadaa are typically accurate to within 10–15% of final construction costs. Here's why, and what affects accuracy:
Factors That Improve Accuracy
-
Precise site measurements
If you provide exact square footage and dimensions, calculations are more accurate.
-
Current regional pricing
The BOQ reflects real-time material pricing for your location.
-
Detailed plant spacing
Spacing follows industry standards, reducing guesswork about plant counts.
-
Complete site photos
More photos (up to 12) help the AI build a more accurate spatial model.
-
Zone verification
USDA hardiness zone filtering ensures you're not costing for plants that will die.
Factors That Reduce Accuracy
-
Soil conditions
Rocky, clay-heavy, or contaminated soil may require additional soil prep not visible in photos.
-
Access constraints
Narrow gates, steep slopes, or confined spaces can increase labour costs significantly.
-
Site cleanup
Existing concrete, tree stumps, or debris removal adds cost not always captured in renders.
-
Regional labour variations
Labour rates vary wildly between rural and urban markets, even within the same state.
-
Contractor markup
The BOQ is materials + labour at standard rates; contractors add overhead and profit margins.
-
Seasonal pricing
Material prices fluctuate. A BOQ generated in winter may differ from spring pricing.
The key insight: a BOQ is a baseline, not a final invoice. Contractors use it to understand scope and generate formal quotes. The 10–15% variance accounts for these unknowns. For design-phase budgeting, this level of accuracy is exceptional.
Moving From BOQ to Contractor Quote
A BOQ is not a contract. It's a detailed scope document that contractors use to generate formal bids. Here's how the handoff works:
What the Contractor Receives
-
Photorealistic render (4K)
Shows the finished design from multiple angles and lighting conditions.
-
Contractor blueprint PDF
Colour-coded zones with plant labels, material specifications, and dimensions.
-
Planting guide (botanical names)
Species, quantities, sizes, mature dimensions, and care notes.
-
Bill of quantities
Line items with material volumes, labour time estimates, and cost projections.
-
Site photos & measurements
Original yard photos and accurate square footage for verification.
What the Contractor Does With It
1. On-site verification: Visits the yard with the blueprint and photos, measuring access points, checking soil conditions, identifying any surprises (underground utilities, hardpan soil, drainage issues) that weren't visible in renders.
2. Material sourcing: Takes the planting guide to local nurseries, getting quotes for each plant species at the quantities specified. May find better pricing or superior quality at different vendors.
3. Labour estimation: Adjusts the BOQ labour estimates based on site reality — harder soil might increase digging time, narrow access might require smaller equipment, etc.
4. Formal quote generation: Inputs the adjusted BOQ into their estimating software, adds overhead and profit margins (typically 15–35%), and delivers a formal bid to the homeowner.
Pro Tip
Getting multiple contractor bids on the same BOQ lets you compare not just pricing but interpretation of scope. If one contractor's bid is significantly higher, ask them to explain — sometimes they've identified real site challenges the AI render couldn't see.
Testing Cost Scenarios in Real-Time
One of the most powerful features of AI-driven BOQ generation is the ability to iterate design and cost side-by-side. Using Smart Fix or the masking brush, you can ask design questions and get immediate cost feedback:
What if we reduce plants by 25%?
Edit the design to remove every 4th plant. BOQ recalculates: new planting costs, mulch volumes, labour hours. See the savings instantly.
What if we upgrade to premium pavers?
Change the hardscape material in the design. BOQ updates: new paver cost per sq ft, total project cost, labour for premium installation.
What if we keep the existing patio?
Use the masking brush to protect the existing patio. Planting areas expand into that zone. BOQ recalculates plant counts and mulch.
What if we swap shrubs for a native wildflower meadow?
Replace shrub zones with meadow planting. BOQ switches labour (seeding vs. planting), mulch (none needed), and total cost comparison.
This iterative cost feedback transforms design conversations. Instead of guessing, you have data. Design decisions become financial decisions with immediate visibility — and homeowners can make informed trade-offs in real-time.
Frequently Asked Questions
What is a bill of quantities (BOQ) in landscape design?
How do AI landscape design tools generate accurate BOQ data?
Why is a BOQ better than a planting list alone?
Can I edit a BOQ if I want fewer plants or different materials?
What's the difference between a BOQ and a contractor blueprint?
How accurate are AI-generated BOQ estimates?
Can landscape contractors import a BOQ directly into their estimating software?
Generate Your BOQ Today
From Render to Bill of Quantities in One Step
Upload your yard photo to Hadaa Garden Autopilot and receive 22 photorealistic renders plus a complete bill of quantities, contractor blueprint, and planting guide. Everything you need to brief a contractor or take to a nursery — all for $9, no subscription required.