Cost Planning — Full Preliminaries Service

No More Variation Surprises. Every Preliminary Cost Itemised Before Ground Is Broken.

Builder-led, line-by-line preliminary costing for custom home builds in Wollongong, Illawarra and Shoalhaven. Every site setup, management, compliance, and logistics cost identified, priced, and locked to your fixed-price contract before construction starts.

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What Full Preliminaries Planning Is

Preliminaries Are Where Budget Blowouts Are Born. Here's How to Stop Them Before They Start.

Every building quote has a preliminaries section — and most clients have no idea what it actually contains. Scaffolding, site fencing, temporary services, crane access, supervision hours, council bonds, Long Service Levy, HBCF warranty, sediment control, skip hire, and utility connection fees. On a complex Illawarra site, these items can represent 10–15% of the total build cost.

Volume builders bury this in a single "preliminary" line. Others exclude it from the initial quote entirely. Neither approach gives you a reliable budget. Both create the conditions for variation invoices to arrive once you're already committed to the build.

CKS Projects separates and itemizes every preliminary cost before a fixed-price contract is issued. Every site setup, management, compliance, and logistics cost is identified, priced, and explained — so you know exactly what you're agreeing to before a sod is turned.

Completed custom home exterior with rendered facade, timber louvres, and outdoor deck — the result of thorough pre-construction cost planning

Where Budgets Break Down

How Builders Hide Costs in Preliminaries

Preliminary costs are the most commonly manipulated part of a building quote. Here's what to watch for when comparing tenders.

Scaffolding, crane access, and site fencing excluded from the base tender and added back as variation invoices after the slab is poured and you have no leverage
Supervision and project management fees buried in a vague percentage allowance rather than line-itemized against actual management hours and site visits
Council bonds, Long Service Levy, and HBCF warranty costs absent from the quote entirely and invoiced separately mid-build without prior disclosure
Site-specific risks — slope engineering, tight access, neighbor protection, and environmental controls — treated as unknowns until encountered during construction, then billed as variations
Sediment control, temporary services, and skip management treated as variable costs rather than planned, priced, and contractually fixed before ground breaks
Quotes appearing competitive only because preliminary costs are excluded or understated — invisible until the contract is signed and comparisons can no longer be made

What's Covered

What a Full Preliminaries Service Actually Covers

Every item below is costed line by line, explained in plain language, and attached to your fixed-price contract before the first trade is engaged.

Site setup itemization — fencing, scaffolding, temporary power and water, site toilets, waste management, sediment control, and neighbor protection measures each costed as a separate identifiable line
Project management allocation — site supervisor hours, administration, compliance tracking, and Wunderbuild client portal setup costed against the actual build program, not buried in a percentage markup
Statutory and permit fee forecasting — DA/CDC fees, Long Service Levy, HBCF warranty, council bonds, and utility authority connection fees identified and locked before the contract is signed
Logistics and risk allowance mapping — crane access, tight or narrow block handling, slope engineering requirements, coastal or BAL constraints, and weather contingencies costed as explicit allowances, clearly separated from the base build
Fixed-price contract integration — every preliminary line finalized, reviewed with the client, and attached to the construction contract and build program before a single trade commences work

The Process

Five Steps to a Preliminary Schedule You Can Trust

Step 01

Site & Scope Audit

Block constraints, access logistics, engineering reports, and approval conditions reviewed in full. Every known risk and site-specific cost factor identified before preliminary itemization begins — no surprises added later because they weren't looked for.

Step 02

Preliminary Breakdown

Line-by-line costing of every site setup, management, compliance, and logistics item. No percentages. No single allowance line that conceals multiple undisclosed costs. Every item is named, scoped, and priced.

Step 03

Risk & Contingency Mapping

Site-specific risk allowances clearly separated from the base build cost. Identified risks are priced as explicit line items so you know what each one covers — not absorbed into a global contingency that erodes confidence in the total.

Step 04

Client Briefing

A plain-language walkthrough of every preliminary item: what it covers, why it's there, and how it prevents a variation invoice later. You understand every line before signing, not after.

Step 05

Contract Lock

The finalized preliminary schedule is attached to the fixed-price tender and integrated into the construction program. Every cost is now contractually bound. What you sign is what you pay.

Who This Is For

Full Preliminary Costing Is Right For You If...

Anyone who has received a variation mid-build

A surprise invoice for "site conditions" or "project management" is a direct signal that preliminary planning was absent from the original tender. This process closes that gap before it opens.

First-time custom home builders

You're committing to the largest financial decision of your life. Understanding what is and isn't included in your quote — before you sign — is the only responsible way to proceed.

Owners on complex sites

Sloping blocks, coastal locations, tight access, and engineered sites all carry additional preliminary costs that need explicit line items — not vague "site works" allowances that shift under variation clauses.

Knockdown rebuild owners

Demolition, temporary services, neighbor protection, and site reinstatement add preliminary costs that don't exist for a vacant land build. These need their own identified and priced line items from the start.

Developers and investors

Accurate margin forecasting depends on accurate preliminary costing. A line-item preliminary schedule is the only foundation for a feasibility model that holds up when the build actually starts.

Anyone comparing multiple builder quotes

Two tenders that look similar rarely have the same preliminary inclusions. A detailed breakdown lets you compare what is actually being offered — not just the headline figure on the cover page.

Warm, light-filled custom living room with Japandi-style furniture and garden outlook — the outcome of a build delivered without variation surprises

Line by Line. Item by Item.

Locked Before Ground Is Broken

The CKS Projects preliminary process was built from 25 years of watching variation invoices arrive on jobs where site setup and management costs were never properly planned. Every item on the schedule exists because it is a real cost on a real Illawarra site — not a percentage markup, not a buried allowance, not a figure that gets adjusted after the contract is signed.

Keiron Moore walks every site before a preliminary schedule is produced. Access logistics, slope requirements, neighboring property constraints, council conditions, and utility authority requirements are all assessed firsthand. The number that goes into the contract reflects the site — not a generic estimate that gets refined once construction reveals what was missed.

Every preliminary item is tracked through the Wunderbuild client portal during the build. If something changes, it is documented, discussed, and agreed before any invoice is raised. That is what a fixed-price contract actually means.

"Keiron worked with us and the architect with positivity and practical solutions throughout the design process."

— Geoff McIntosh, CKS Projects client

Want to See Exactly What's in Your Build Before You Sign?

Bring your plans, your site details, and any existing quotes. CKS will walk through the preliminary costs your current tender may not include — and show you what a transparent, fully itemised fixed-price contract looks like.

Book a Cost Planning Discussion