Do I need building consent for a home extension?
Yes. Most home extensions require building consent because they involve structural, weathertightness and services work. We prepare and coordinate the drawings and supporting documentation.
Home extension planning • Auckland
Home Extension Plans
& Building Consents Auckland
Adding more space to your home starts with great planning. Stable Group specialises in home extension design, drafting, feasibility assessments and building consent applications throughout Auckland—from larger living areas to second-storey additions.
PlansConsentCoordination
Good questions to ask first
What Auckland homeowners want to know
How much do home extension plans cost?
Fees depend on the extension’s size, complexity, existing home and council requirements. We provide a fixed-scope proposal before design begins.
Can Stable Group prepare plans for second-storey additions?
Absolutely. We design single- and double-storey extensions and coordinate the engineers and other specialist consultants required.
Can you help with Auckland Council approvals?
Yes. We prepare the consent documentation, lodge the application and coordinate responses through the approval process.
Plan first
Why extension planning matters
A successful home extension begins long before construction starts. Good planning reduces costly design changes, prevents avoidable delays and helps the new spaces integrate naturally with your existing home.
Our designers focus on how the extra space will improve everyday living while meeting New Zealand Building Code requirements. Whether you are adding a bedroom, extending a kitchen or building a second level, the design needs to be practical, buildable and worth the investment.
Design to approval
Our home extension design services
A coordinated pre-construction service, shaped around the decisions your project actually needs.
Extension concept design
Turn your ideas and space requirements into clear, practical concepts.
Architectural drawings
Professional extension drawings developed for buildability and approval.
Consent documentation
Complete building consent documentation prepared for Auckland Council.
Site measure & existing plans
Accurate documentation so new work integrates with the existing home.
Feasibility reports
Understand site, planning and structural constraints before investing further.
Structural coordination
Close coordination with engineers and specialists where required.
Cost planning
Test the proposed scope against likely construction costs early.
Project coordination
Support through design development, consent and construction readiness.
Your brief, made buildable
Types of home extensions
Single-storey extensionsSecond-storey additionsKitchen extensionsLiving-room extensionsBedroom additionsMaster suitesGarage extensionsOutdoor living areasHome officesGranny-flat planning
Why Stable Group
Clarity before construction.
- ✓ Home-extension design specialists
- ✓ Auckland consent expertise
- ✓ Residential drafting professionals
- ✓ Fixed-scope pricing
- ✓ One dedicated project manager
- ✓ Practical, buildable designs
- ✓ Consultant coordination
A considered path
From first conversation to approved plans
01Initial consultation
02Site inspection
03Concept design
04Design development
05Working drawings
06Consent application
07Council coordination
08Consent approval
09Builder introduction
After consent
Approved plans.
Your choice of builder.
Stable Group’s focus is the design, documentation and approval pathway. Once consent is granted, you can take the plans to your own builder or ask us about an introduction to Neda Builda.
Optional construction pathwayFrequently asked
More answers before you start
01How long does it take to design a home extension?+
Timing depends on complexity and the number of design decisions involved. After the first consultation we outline a realistic design and documentation programme for your project.
02Can I build upwards instead of outwards?+
Often, yes. A second-storey addition depends on the existing structure, planning controls and budget. A feasibility assessment is the right first step.
03Can you prepare plans from an existing home?+
Yes. We measure and document the existing building before developing the extension plans.
04How much will my extension cost?+
Construction cost depends on size, structure, finishes, access and site conditions. Early cost planning helps align the design with a realistic budget.
05Can you coordinate engineers?+
Yes. We coordinate structural and other specialist consultants required for the design and consent application.
06Can I use my own builder?+
Yes. Our documentation is prepared to support a clear conversation with your chosen builder.
07Can you recommend a builder?+
Yes. Our trusted building partner, Neda Builda, can price and construct your approved project.
08Will council approve my plans?+
Approval depends on meeting all applicable requirements. We prepare coordinated documentation and manage council questions to give the application the best possible path.
09Can you estimate construction costs?+
We can help establish likely costs early and review scope decisions before the design is finalised.
Your next step
Let’s give your extension
a clear design direction.
Tell us what you are considering. We’ll help you understand the design opportunity, the right first step and the likely approval pathway before you commit further.
Call 0800 2 REMODELStart your enquiry