This range is a guide. Your final cost will depend on your site, your goals, and local requirements. Book a free site visit to get accurate pricing—no guesswork.

Get An Estimate For Your

Home Addition In 60 Seconds

Tell us about your vision—we’ll give you a tailored estimate for your Home extension or addition project.

What type of addition are you planning?

Let us know how you're looking to expand your home.

Extension Outward

Second Level Addition

Will a bathroom be included in the addition?

This helps us plan plumbing and layout needs.

Yes

No

Will a kitchen or kitchenette be included?

Let us know if you're planning to add a cooking area.

Yes

No

What is the approximate size of your addition (in square meters)?

Please enter a number only.

Guide:

One Bedroom = 12sqm

Living room = 28sqm

Average second story addition = 46sqm

2 Bedrooms, Living & Bathroom = 75sqm

What level of finish do you prefer?

Choose your desired material and interior quality level.

Economy

Standard

Premium

Are you the property owner or authorized to make changes?

We require permission to proceed with planning.

Yes

No

When would you like to get started?

Let us know your ideal timeline for the addition.

As soon as possible

3-6 Months

6-12 Months +

Just Gathering Info

Have you selected a designer or architect?

Let us know if you've already started planning your design.

Yes

No

Do you already have completed plans?

If you have architectural or design plans, we can review them.

Yes

No

Do you have financing in place?

Understanding your financial readiness helps us plan next steps.

Yes

Not Yet

What’s your estimated budget for the addition?

Share your expected budget range so we can tailor a realistic plan.

Please share your basic contact details:

Enter your details so we can send your custom home estimate.

Where is your property located?

Tell us the site location of your future home addition.

Book a Free Consultation

Let's discuss your project and see how it can be brought to life

Call Us Today

+64 3 567 3898

Open Hours

Mon - Sat: 8 am - 5 pm, Sun: Off

Our Services

What Services We offer

New Homes

Imagine your home how you dream it to be and we’ll bring it to life. On budget and stress free.

Home Extensions and Additions

With your vision and our expertise, we deliver successful and stress-free extensions, on budget.

Home Renovation

Give your home and your lifestyle a serious upgrade. We deliver dream renovations

About Us

Lifestyle Renovation Specialists, Architectural Builders

Gray Brothers specialises in high-quality residential construction services and commercial building services across Dunedin and Otago. Whether you're building a stunning architecturally designed home, renovating a character property, or upgrading a commercial space, we bring decades of experience, unparalleled craftsmanship, and a commitment to excellence. Our projects are built to stand the test of time—energy-efficient, user-friendly, and low maintenance—giving you a space you’ll love for years to come.

Gray Brothers Builders
Director / Owner

Call us on:

+64 3 567 3898

Location:

3 Braemar Street, South Dunedin Dunedin

Hours of work:

Mon - Fri: 8am - 5pm

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