Do I need a building consent for a house extension in Auckland?

Almost always, yes. Extensions change the floor area and structure. We prepare and manage your building consent with Auckland Council, and we check the resource consent rules for your site, such as height-to-boundary and site coverage, before the design is finalised.

How long does a house extension take?

Design and consent take longer than most people expect, and construction depends on the size and complexity of the job. Your contract includes a schedule of work with stages, milestones and dates, so you know what happens when and can plan around it.

Can you extend a villa without wrecking the character?

Yes. We match the roof pitch, cladding, windows and detailing so the addition reads as part of the original house. Where we can, we reuse or match native timbers and mouldings, so from the street the extension looks like it has always been there.

Can I stay in the house during an extension?

Often, yes. If the new space can be built separately before it's connected to the house, most owners stay put for the main works. Some jobs need you out for a stretch. We'll tell you which applies to your project at the free site visit.

House extensions

Need More Space? Don't Move. Build Out.

House extensions all around Auckland: a bedroom, a bigger living area, a home office or a whole new wing. Planned with you, consented properly and built by one accountable team.

Book a free site visit Call 0800 752 000

Birkenhead 1950s state house after renovation and extension

30 years in the industryBryson Rangi, director
Site Safe accredited
Licensed Building Practitioners
Free site visits and quotes

The problem

The real cost of moving

Agent fees, legal costs, a new mortgage rate and a different street. For many Auckland owners the better move is to keep the location and change the house.

An extension lets you stay close to your school, your neighbours and your work, and shape the house around the way you live now.

Birkenhead 1950s state house during renovation, with timber flooring being laid in the living area — Hinemoa Street, Birkenhead: the living area with flooring going down, then finished. Drag to compare.

Renovated living room in a Birkenhead 1950s state house — Hinemoa Street, Birkenhead: the living area with flooring going down, then finished. Drag to compare.

Scope

What we extend

Single storey additions to the side or rear
Villa and bungalow extensions that match the original roofline and cladding
A new bedroom, ensuite or open-plan living area
A new kitchen, or an existing one relocated
Hardwood decks that connect new and existing spaces

What you can count on

One team from first call to handover

Clear communication.
From the first call to handover, you know what is happening and what comes next.
Itemised quotes.
Every cost is listed before you sign, so there are no surprises.
Quality control.
Work is checked at every stage of the build.
Tidy sites.
Respectful tradespeople and a site kept tidy while you live alongside it.

Proof

Hinemoa Street, Birkenhead

See the full Hinemoa Street project

The extended state house
Setting out beside the house for the extension
New roof trusses going up
Under scaffolding during the build
The finished living area
Deck with glass balustrade and timber screening
The finished house from the street

A 1950s state house. We added an extension to the eastern side and completed a full internal fit-out. The result is a bigger, brighter house on the same section.

Our job was achieved on time and within the budget submitted even though we made changes along the way. We would have no hesitation in recommending them for any job, big or small.

Monique JuddAugust 2014

Process

How an extension runs with us

Step 01
Site visit
We look at the available area, the existing house and its condition.
Step 02
Concept plan
We draw up the concept with your designer or architect.
Step 03
Costing
A detailed quote and scope of works.
Step 04
Contract
A written contract with stages, milestones and timelines.
Step 05
Consents
We prepare and manage your building consent with Auckland Council.
Step 06
Build
One accountable team. Regular checks and updates at each stage.
Step 07
Handover
Final checks, code of compliance and our after-care.

See the full 9-step process

Budget and time

What it costs and how long it takes

What it costs

Cost depends on the size of the addition, the structure, the foundations, the finish and how the new space ties into the existing house. A single-room addition costs a fraction of a whole new wing. After a free site visit we write an itemised quote, so you see every cost before you sign.

How long it takes

Design and consent take longer than most people expect. Construction time depends on the size and complexity of the extension. Your contract includes a schedule with stages, milestones and dates.

Get an itemised quote

FAQ

House extension questions

It depends on the size, structure and finish. A single-room addition costs a fraction of a larger extension, and foundations and how the new work joins the old also matter. After a free site visit we give you an itemised quote, so you see every cost before you sign.

Bryson Rangi, director of Straightline Builders

Thinking about adding space?

Tell us what you want and we'll tell you what it takes. Bryson will call you back within 24 hours.

0800 752 000

176 Kepa Road, Orakei, Auckland
info@straightlinebuilders.co.nz

Need More Space? Don't Move. Build Out.

Clear communication.

Itemised quotes.

Quality control.

Tidy sites.

Site visit

Concept plan

Costing

Contract

Consents

Build

Handover