Eaves gutters
- Quad, half-round and square-line profiles
- Colorbond, zinc and copper
- Fascia gutters
- Stop ends and corners
ASMM / ANZSMM · Roofing · Roof Drainage
Roof Drainage & Gutter Estimating
Gutters, downpipes and rainwater goods measured in lineal metres and numbers
Gutters look simple, but profile, fall, overflow provisions and downpipe positions are all set by roof area and rainfall intensity under AS/NZS 3500.3. Underpricing them means a callback after the first heavy rain.
We measure every gutter run, downpipe and fitting from the roof plan, check capacity against the design rainfall where it is given, and return a priced schedule you can send to a supplier.
Lineal metresBy profile and material
AS/NZS 3500.3Stormwater drainage
OverflowProvisions shown
DownpipesCounted with fittings
Deliverables
What You Actually Receive
| Deliverable | Format | Detail level |
|---|---|---|
| Gutter schedule | Excel, m | By profile, size and material |
| Downpipes | Excel, m / No. | By size, with offsets and shoes |
| Fittings | Excel, No. | Corners, stop ends, outlets and brackets |
| Box and parapet gutters | Excel, m | With sumps and overflows |
| Rainwater tanks | Excel, No. | Connections and first-flush devices |
| Priced estimate | Excel + PDF | Supply and installation, with GST on its own line |
Australian Framework
How This Work Fits Into the Australian Standards
Every estimate is structured to the trade sections used for tendering and to the elements used for early cost plans, so one set of quantities serves both.
| Trade section (ASMM / ANZSMM) | Element (NPWC / AIQS) |
|---|---|
| Roofing / Waterproofing / Cladding | 05 RF Roof / Insulation & Cladding |
Scope Coverage
Roof Drainage Work We Measure
From eaves to the stormwater connection.
Box & parapet gutters
- Box gutters with sumps
- Parapet gutters
- Overflow provisions
- Liners and membranes
Downpipes
- Round and rectangular downpipes
- Rainwater heads
- Offsets and shoes
- Connection to stormwater
Accessories
- Leaf guards
- First-flush devices
- Brackets and fixings
- Tank connections
Water harvesting
- Rainwater tanks
- Pumps and plumbing
- Overflow connections
- Mains top-up
Our Process
Start a Project →
How We Prepare Your Estimate
Five steps from your drawings to a roof drainage number you can defend in a scope review.
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01
Scope review
An estimator reads the roof plan, hydraulic stormwater drawings and the gutter and downpipe specification before touching a takeoff tool, and lists every assumption, exclusion and missing item as a query for you to confirm. Nothing is priced on a guess.
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02
Digital measurement
Quantities are measured digitally in Bluebeam Revu, PlanSwift or On-Screen Takeoff, in metric: lineal metres of gutter by profile, numbers of downpipes and outlets, and capacity checks to rainfall intensity. Each measurement sits on a named layer, so the marked-up PDF you receive is a visual audit trail.
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03
Pricing
We price the quantities using current Australian supplier quotes, subcontract rates and published benchmarks such as Rawlinsons, adjusted for your postcode and state. If you give us your own rates or a preferred supplier schedule, we use those.
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04
Senior QA review
Before anything is sent, a second estimator compares the takeoff with the drawings and verifies the measuring rules, deductions, wastage allowances and productivity assumptions.
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05
Delivery
Excel and PDF files reach your inbox within one to two days for standard jobs. One round of changes is included, and we remain available for tender queries and scope questions after the tender.
Tooling
Software We Work In
You do not have to hold a licence for these tools. We do the measuring with them and hand over the results.
Bluebeam Revu
Measuring, marking and comparing drawings on screen.
PlanSwift
Takeoffs made from ready-built assemblies, with quantities you can export.
On-Screen Takeoff
Layer-based measuring on big commercial drawing sets.
Rawlinsons-benchmarked rates
Up-to-date Australian unit rates, compared with supplier and subcontractor quotes.
Microsoft Excel
The final file, set out to match your cost codes and trade sections.
If you use Buildsoft, CostX, Estimate One, Procore or your own template, let us know and we will prepare the file so it imports straight in.
Turnaround & Pricing
Cost and Delivery Time
We quote a fee for each project before starting, in AUD excluding GST. We never bill by the hour, and you are never charged more than the quote.
Small / residential scope
24 hoursSingle dwellings and extensions.
Typical fee A$350 to A$850
Mid-size commercial
24 to 48 hoursRoofs on multi-unit and commercial buildings.
Typical fee A$850 to A$1,800
Large / complex
48 to 72 hoursIndustrial and large commercial drainage.
Typical fee A$1,800 to A$3,600
Monthly takeoff package
OngoingA set number of estimates every month, with your jobs placed first in the queue.
Flat monthly rate from A$2,200/mo
Cost vs. Capacity
Why Builders Hand Roof Drainage Estimating to Us
A full-time estimator is a salary, super, software seats and training. A roof drainage takeoff from us is a per-project cost that only appears when you are actually tendering.
- No software licences. Takeoff and cost-data subscriptions cost thousands of dollars per user each year. With us, you use ours.
- Tender more, more selectively. Most builders do not lose jobs through bad pricing. They lose them because they run out of time to reach enough tenders before closing.
- Site time stays site time. Items get overlooked when estimating at 9pm after a long day on site.
- Independent accuracy check. Even builders with in-house estimators use us to sanity-check large or unfamiliar roof drainage scopes before they submit.
- Moves up and down with how busy you are. Five takeoffs in a busy month and none in a slow one. You never carry a fixed cost.
Who We Work With
Made for Anyone Pricing Roof Drainage
Roofers and gutter installers
Metre and fitting takeoffs.
Builders
Roof drainage allowances.
Plumbers
Stormwater connections.
Suppliers
Length and fitting lists.
Developers
Per-unit costs.
Architects
Concealed gutter details.
Sample Output
Sample Line Items
Every estimate has this much detail: quantities tied to elements and measured in metric, never lump sums.
| Item | Unit | Qty | Material | Labour | Total |
|---|---|---|---|---|---|
| Quad eaves gutter, 115 mm | m | 184.0 | $ | $ | $ |
| Round downpipe, 90 mm | m | 62.0 | $ | $ | $ |
| Rainwater heads | No. | 6 | $ | $ | $ |
| Box gutter with liner | m | 24.0 | $ | $ | $ |
| Leaf guard | m | 184.0 | $ | $ | $ |
These example items show only the layout and units. They do not come from a client project.
FAQ
Common Questions
Do you check gutter capacity?
Where design rainfall intensity and the roof area are given, yes, and we flag where gutters or downpipes look undersized.
Do you include overflow provisions?
Yes, as shown in the documents or as a flagged allowance.
Can you price different colours and materials?
Yes: Colorbond, zinc, copper and stainless steel.
Which states and territories do you cover?
Every one. Prices are set for your project postcode and state, so a job in Darwin and a job in Melbourne get their own unit costs instead of one national average.
What does it cost?
A fee is quoted per project, in AUD excluding GST, before any work starts. You approve it in writing first. There is no hourly billing and no invoice larger than the quote.
How fast is turnaround?
Standard scopes ship in 24 to 48 hours. Large packages take 48 to 72 hours. If you are against a closing time, say so when you upload and we will tell you honestly whether we can meet it.
Are my project details kept confidential?
Yes. We keep drawings, specifications and tender figures private, and if you prefer we will sign your NDA before we receive any documents.
Ready to Get Started?
Ready for Your Next Roof Drainage Tender?
Send your drawings along with a short note on what the job covers. A fee and delivery date come back the same working day, and the finished estimate follows within one to two days of your approval.