Knowledge Centre

Open-Book Pricing & Project Management

How premium builds are priced and run honestly: open-book invoicing, contract types, cost control and one coordinated team.

Written for people planning a home in Nelson, Tasman, Richmond, Motueka and across the top of the South.

8 guides in Open-Book Pricing & Project Management← All guides
Open-Book vs Fixed-Price Building Contracts in NZ: A Plain-English Guide. A Open-Book Pricing & Project Management guide from Ecotectural Home Builders, Nelson Tasman.
Open-Book Pricing & Project Management

Open-Book vs Fixed-Price Building Contracts in NZ: A Plain-English Guide

Which building contract actually protects your budget? Fixed-price, cost-plus and open-book compared in plain English, and who really carries the risk.

8 min read
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How Much Does It Cost to Build a House in NZ (2026)?. A Open-Book Pricing & Project Management guide from Ecotectural Home Builders, Nelson Tasman.
Open-Book Pricing & Project Management

How Much Does It Cost to Build a House in NZ (2026)?

What it really costs to build a house in New Zealand in 2026: honest Nelson Tasman builder figures, why public per-square-metre numbers mislead, and how to budget with confidence.

9 min read
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Financing a New Build in NZ: Construction Loans and Progress Payments, Explained. A Open-Book Pricing & Project Management guide from Ecotectural Home Builders, Nelson Tasman.
Open-Book Pricing & Project Management

Financing a New Build in NZ: Construction Loans and Progress Payments, Explained

How construction loans, drawdowns and progress payments work in NZ, what banks want from you and your builder, and the contingency rule that saves builds.

10 min read
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Why We Charge to Price Your Plans (and Why Free Quotes Cost More). A Open-Book Pricing & Project Management guide from Ecotectural Home Builders, Nelson Tasman.
Open-Book Pricing & Project Management

Why We Charge to Price Your Plans (and Why Free Quotes Cost More)

A free builder quote takes hours it never gets and hides its gaps in your budget. What a paid plan pricing review delivers instead, and why the fee comes back off your build.

9 min read
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How a Builder Prices Your Architectural Plans. A Open-Book Pricing & Project Management guide from Ecotectural Home Builders, Nelson Tasman.
Open-Book Pricing & Project Management

How a Builder Prices Your Architectural Plans

What actually goes into pricing a set of architectural plans: quantity take-offs, supplier and subtrade pricing, buildability, value management, and why two quotes on the same plans can differ so much.

9 min read
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Tendering Your Plans vs Partnering With One Builder. A Open-Book Pricing & Project Management guide from Ecotectural Home Builders, Nelson Tasman.
Open-Book Pricing & Project Management

Tendering Your Plans vs Partnering With One Builder

Sending finished plans out to several builders for competitive quotes, or engaging one builder early and open book. What each really gets you, and which suits a one-off home.

9 min read
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Why Build Costs Blow Out, and How to Prevent It. A Open-Book Pricing & Project Management guide from Ecotectural Home Builders, Nelson Tasman.
Open-Book Pricing & Project Management

Why Build Costs Blow Out, and How to Prevent It

The real reasons builds go over budget, lowball quotes, incomplete plans, the ground, variations, and no contingency, and the handful of moves that keep a build on its number.

9 min read
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How Much Does a Luxury Architectural Home Cost in NZ?. A Open-Book Pricing & Project Management guide from Ecotectural Home Builders, Nelson Tasman.
Open-Book Pricing & Project Management

How Much Does a Luxury Architectural Home Cost in NZ?

What a high-end architectural home really costs to build in New Zealand, what you are paying for, why bigger homes cost less per square metre, and what pushes a luxury number up.

9 min read
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