So you’ve decided to go with a design build firm—great choice! But what exactly happens after you sign the contract? What comes first: design, permits, or demolition? And how long does it all take?

In this guide, we’ll break down the full design build timeline—from the very first consultation to the final handover—so you know exactly what to expect and when.

Whether you’re building a custom home or planning a major renovation, understanding the sequence (and purpose) of each stage will help you feel more in control and better prepared for what’s ahead.

Quick Overview: The Design Build Process at a Glance

The design build model is structured for efficiency and collaboration, with overlapping stages that reduce time and confusion.

Here’s a simplified view of the timeline:

1. Initial Consultation & Feasibility Review
2. Concept Design Phase
3. Detailed Design & Cost Planning
4. Approvals & Permits
5. Pre-Construction Preparation
6. Construction Phase
7. Final Walkthrough & Handover

Want the full picture? Keep reading to explore each phase, how long it typically takes, and what your role is along the way.

Phase 1: Consultation & Feasibility (1–2 Weeks)

This is the “getting to know you” phase. It’s where the foundation of your project is set—both literally and figuratively.

What happens:

• You meet with the design build team to discuss your goals, budget, and ideas.
• The team reviews your site (or existing home), identifies potential constraints, and assesses feasibility.
• You’ll discuss timelines, zoning rules, and rough cost estimates.

Key takeaway: This phase ensures you’re starting from a realistic place—with eyes wide open.

Pro Tip: Bring your wish list, photos of inspiration, and any non-negotiables. It’ll help shape early concepts and priorities.

Phase 2: Concept Design (2–4 Weeks)

Once feasibility is confirmed, the team moves into concept design. This is where your vision starts to take visual shape.

What’s included:

• Initial floor plans, elevations, and 3D visuals (depending on the firm)
• Early design reviews and refinements
• Budget alignment check-in

During this stage, designers and builders work together to ensure the concept is not only beautiful but buildable within your budget.

Did You Know? A design build approach allows builders to flag costly or inefficient design features early—saving you time and money.

Phase 3: Detailed Design & Cost Planning (3–6 Weeks)

Now it’s time to drill down into the finer details. This is where things start to feel real.

What’s covered:

• Construction drawings and engineering plans
• Materials selections (tiles, fixtures, cabinetry, etc.)
• Fixed-price quoting and formal cost breakdown

You’ll also finalise:

• Structural and service design (plumbing, electrical)
• Energy efficiency compliance
• Any consultant input (e.g. surveyor, certifier)

Bold truth: The more decisions you make in this phase, the fewer delays you’ll have during construction.

Phase 4: Permits & Approvals (4–12 Weeks)

No one’s favourite phase—but an essential one. Your design build team manages this process, but there’s often some waiting involved depending on your local council or certifying body.

This stage includes:

• Submitting plans to council or private certifier
• Obtaining planning approval (if required)
• Receiving the final construction certificate or building permit

“Approvals can vary widely depending on location and project scope. A good design build firm will keep you updated every step of the way.”

Timeline tip: Council delays are common. If you’re on a tight schedule, ask about early prep options in parallel (e.g. ordering materials).

Phase 5: Pre-Construction Prep (1–3 Weeks)

Before tools hit the ground, there’s a lot happening behind the scenes.

This stage includes:

• Finalising trade scheduling
• Site set-up and safety planning
• Ordering long lead-time materials (e.g. windows, custom joinery)

You’ll also:

• Review your construction schedule
• Meet with the site supervisor or construction manager
• Confirm your main point of contact going forward

Did You Know? Even the best designs can go sideways without good planning. This phase is what helps construction run smoothly and safely.

Phase 6: Construction (12–24+ Weeks Depending on Size)

Here’s where the action happens. With everything planned and approved, the build begins.

A typical construction sequence:

• Site prep and demolition (if applicable)
• Foundations and framing
• Roof, windows, and external finishes
• Electrical, plumbing, and insulation
• Internal linings, flooring, painting
• Joinery, fittings, and fixtures

You’ll likely have:

• Weekly or fortnightly site updates
• On-site walkthroughs at key milestones (e.g. lock-up stage)

Pro Tip: Avoid changing your mind once building starts—it can create costly delays and rework.

Phase 7: Final Walkthrough & Handover (1–2 Weeks)

You’ve made it! The final stretch involves quality control and sign-off.

Here’s what to expect:

• A practical completion inspection
• A detailed walkthrough with your builder
• A defects list (aka “punch list”) to resolve before handover
• Instruction manuals, warranties, and compliance certificates

Once everything is approved, you receive the keys—and your design build journey officially comes to a close.

“Good design build firms will follow up post-handover to ensure everything is working as it should and you’re happy with the final result.”

Quick Guide: Planning Your Project Timeline

Let’s say you’re hoping to build or renovate within the next year. You might be wondering if the design build process will fit your ideal timeline—and what delays to watch out for.

Common Challenges:

• Not sure how long the design phase will really take?
• Worried council approvals will slow everything down?
• Uncertain about when you’ll need to make key decisions?

How to Stay on Track:

1. Start early: Ideally, give yourself at least 4–6 months before your intended build start date to get through design and approvals.
2. Be decisive during design: The more choices you lock in early, the faster construction can proceed.
3. Ask about fast-track options: Some firms offer staged approvals or early site access that can speed things up.
4. Stay in the loop: Consistent communication helps you avoid missed emails, unclear decisions, or timing surprises.

Why It Works:

Design build firms manage the entire timeline—so you’re not left guessing or coordinating multiple parties. You get one schedule, one team, and one finish line.

Want help mapping out your project timeline? Most design build teams offer obligation-free consultations.

FAQs: Timeline Edition

How long does a typical design build project take from start to finish?

It depends on the scope, but a typical single-storey home might take 7–10 months total, including design, approvals, and build. Renovations may be quicker.

Can anything be done to speed things up?

Yes! Early decisions, fast permit responses, and good weather all help. Working with a design build firm also removes handover delays common in traditional builds.

What if I need to delay the project after starting design?

That’s usually okay. A flexible design build team can pause or adapt timelines if needed—as long as there’s clear communication early on.

When should I start if I want to move in by next year?

Aim to start initial consultations 10–12 months in advance. This gives you breathing room for design, approvals, and any unexpected hiccups.

Conclusion: Understanding the Design Build Timeline = Better Outcomes

Knowing what to expect—and when—takes a lot of uncertainty out of your building journey.

The design build timeline is structured to reduce delays, streamline communication, and keep your project moving forward.

With one team managing every phase, from ideas to execution, you can focus on what matters: creating a home that works for your life, your budget, and your vision.

If you’re thinking about building or renovating, understanding the timeline isn’t just helpful—it’s empowering. And with a good design build team, you won’t be doing it alone.