Secondary dwellings & granny flats

More space.More possibility.

Beautifully considered one- and two-bedroom secondary dwellings, delivered as turnkey packages by a local custom builder. Compare eight designs, inclusions and clear starting prices across the Sunshine Coast, Noosa Hinterland, Mary Valley and Gympie.

EssentialLifestyleSignature
Landscaped exterior render of the C.J Carpentry Signature Premium secondary dwelling
Featured designSignature Premium2 bed · 97.3 m² total covered
15+Years of experience
QBCCBuilder's Licence #15354353
LocalBuilder-led service
End-to-endDesign through to handover

The secondary dwelling range

One clear range.
Eight considered choices.

Find your fit with one- and two-bedroom designs, covered outdoor living and a choice of three finish levels. Because the layouts, specifications and allowances are developed in advance, you can compare clear inclusions and starting prices without beginning from a blank sheet.

Artist impressions are illustrative only. Refer to the floor plans for accurate building and room dimensions. Final colours, finishes, foundations and landscaping may vary to suit the property, approved design and selected specification.

Completed Essential Two secondary dwelling with a covered timber deck, built by C.J Carpentry and ConstructionCompleted Essential TwoBuilt by C.J Carpentry & Construction
Exterior photo, 1 of 5

The builder behind the range

From a design to a real home.

Our completed Essential Two shows the care and workmanship we bring to secondary dwellings. Our team manages the process from your initial enquiry through to construction and handover, with clear communication at every stage.

Dedicated local building teamA consistent group of local trusted trades and suppliers.
Fully licensed and insuredQBCC Builder's Licence #15354353.
Local project knowledgeExperience across the Sunshine Coast, Noosa Hinterland, Mary Valley and Gympie regions.
Quality over volumeEach build receives personal oversight and clear communication.

What our building clients say

Trusted for the way we build.

Feedback from C.J Carpentry & Construction clients on our building work, communication and attention to detail.

01
“Connor and team were great to deal with from the first contact to the last screw. They were a one-stop shop as they managed all related jobs for sparkies, plumbers and even fixed up the driveway after the rains and heavy traffic. Always on time, clear communication on start and end dates. … All in all a great end result! Highly recommended!”
Mick de GrootFacebook review
02
“Both projects from start to finish were very well organised and stress free. Communication was excellent and Connor was always very clear and made sure we as the clients understood each stage of our project. … Certainly, a most trusted business and we can’t recommend them highly enough.”
Stephanie GoadGoogle review
03
“From start to finish Connor and his team care about your vision and are invested in the project. Connor’s communication with me throughout this process has been outstanding and prompt. His knowledge base and input have been invaluable. I can’t recommend Connor and his staff highly enough. I’m absolutely over the moon with the end result and will be the first to recommend them.”
Linda CutmoreFacebook review
Read more client reviews

Inclusions that make sense

Three finish levels.
One quality standard.

From practical everyday finishes to stone benchtops and architectural details, choose the home that feels right for you. Every series includes a fitted kitchen, bathroom and laundry, flooring, cooking appliances and split-system air conditioning.

01

Essential Series

Practical finishes. Everyday comfort.

Best forEveryday living with simple, practical finishes

  • Laminate benchtops and soft-close cabinetry
  • Floor-mounted vanity and enclosed shower
  • 2,400 mm flat ceilings
  • Weathertex weatherboards and Merbau verandah posts
02

Lifestyle Series

Stone finishes. More choice.

Best forStone finishes with a choice of roofline and exterior cladding

  • Stone benchtops to kitchen, bathroom and laundry
  • Wall-mounted vanity and double kitchen sink
  • 2,400 mm flat ceilings
  • Choice of horizontal weatherboards or vertical cladding
03

Signature Series

Architectural detail, inside and out.

Best forAn architectural look with more detailed interior finishes

  • Stone benchtops with waterfall ends
  • Walk-in shower and floor-to-ceiling bathroom tiles
  • 2,550 mm flat ceilings; selected raked ceilings in Premium
  • Exposed-aggregate patio on slab designs

Included in every home

A fitted kitchen, bathroom and laundry, flooring, cooking appliances, ceiling fans and split-system air conditioning. Your chosen series sets the finishes, and we manage construction and the trades through to handover.

Explore a design to see its complete inclusions and specifications.

Site conditions, approvals and service allowances

Each published starting price covers the selected slab-on-ground or raised-on-steel-stumps foundation, the standard home and series inclusions, the standard approval package, included soil testing and site classification, together with the standard service allowances. GST, QBCC home warranty insurance and the QLeave levy are included.

The starting price assumes normal site conditions with soil classifications up to and including H1, BAL Low, standard construction access and level ground or a slight slope. We assess your property and confirm any additional costs in your quote before you commit to construction.

Soil testing and site classification are included in our starting prices. Our standard engineering is based on normal site conditions with soil classifications up to and including H1. Final engineering is confirmed for each property.

Sites classified H2 or E require revised engineering. Class P sites and other conditions outside the standard engineering parameters require individual assessment. Additional investigations, revised engineering and any associated foundation changes are priced separately where required.

The standard approval package includes site-specific building-approval drawings for the selected standard design, structural engineering on this standard basis, energy assessment, private building certification, standard council document lodgement and a standard sewered plumbing-approval allowance.

Service allowances cover up to 20 metres of town-water, sewer and stormwater connection runs from the dwelling to existing compliant connection points, plus up to 20 metres of underground electrical submains from the existing supply point.

The published plan, exterior and series inclusion level form the standard dwelling package, including construction through to handover. Raised-on-steel-stumps starting prices allow for a finished floor height up to approximately 1 metre above ground level.

What may cost extra on your property
  • Soil or site conditions outside the standard engineering basis; difficult access; additional earthworks; steep slopes; retaining; greater raised floor heights; cross-bracing or non-standard engineering.
  • Bushfire ratings above BAL Low, specialist reports (such as slope-stability assessments) or other site-specific construction requirements.
  • Service runs beyond the allowances, pump stations, tanks, treatment systems or infrastructure upgrades.
  • Planning applications, boundary relaxations, unsewered wastewater approvals and authority costs outside the standard approval allowance.
  • Carports, additional paths, fencing and landscaping.
Changes to the standard design

Our standard designs can be personalised. Tell us what you would like to change, and we’ll assess the options for your property and budget. Changes are quoted separately, including any required updates to drawings, engineering and approvals. Published starting prices apply to the standard design and inclusions.

Final inclusions, allowances and exclusions are confirmed in your building contract and project specification.

Choose your design. Make it your own.

Our standard designs give you a clear starting point. We’re happy to discuss changes to layouts, ceiling heights, doors, windows, cladding and finishes to suit your needs, style and property.

We’ll assess your ideas and explain any additional design, engineering, approval and construction costs before proceeding. Starting prices apply to the published standard designs and inclusions.

Need something completely different? We can also help develop a fully custom secondary dwelling.

Discuss your ideas

From possibility to handover

A clear path through
a complex process.

You do not need to coordinate designers, engineers, certifiers and trades yourself. We can manage the process as one connected project. Read our property and council guide.

01

Feasibility check

Tell us about your property, budget and goal so we can confirm whether the project is a suitable fit.

02

Block suitability

We review zoning, setbacks, access, services and the practical fit of a secondary dwelling on the property.

03

Project engagement

Move into a paid planning phase so we can invest the time needed to define the project properly.

04

Design & approvals

Coordinate plans, engineering, energy requirements, certification and the required council approvals.

05

Construction

Manage the full build, every trade and quality control with clear communication throughout.

06

Handover

Complete the final walkthrough and hand over a finished dwelling ready for family, tenants or guests.

Frequently asked questions

Know what comes next.

Every block is different, but these are the questions that usually shape the first conversation.

01How much does a secondary dwelling cost?+

Essential One starts from $219,000 including GST on a slab-on-ground foundation or $227,000 including GST raised on steel stumps. Each model displays separate starting prices for both foundation options, including QBCC home warranty insurance and the QLeave levy. Prices are based on normal site conditions with soil classifications up to and including H1, BAL Low, standard construction access, level ground or a slight slope, and the published service allowances. Final pricing follows a property assessment.

02How long does construction take?+

Construction typically takes approximately 3–4 months from commencement on site through to handover. Every dwelling is built on site, with quality workmanship and an organised construction process to keep your project moving efficiently. Design and approvals take place before this construction period. Timing can vary with weather, site conditions and the agreed scope of work.

03Are design and approval costs included?+

Yes. The standard package includes soil testing and site classification, site-specific building-approval drawings for the selected standard design, structural engineering based on normal site conditions with soil classifications up to and including H1, energy assessment, private building certification, standard council document lodgement and a standard sewered plumbing-approval allowance. Planning applications, boundary relaxations, bushfire reports, unsewered wastewater approvals, specialist reports, higher BAL requirements, non-standard engineering and authority costs outside the standard allowance are assessed separately for the property.

04Can these plans be changed?+

Yes. We can discuss changes to the layout, ceiling heights, doors, windows, cladding and finishes to suit your needs. Proposed changes are subject to site suitability, engineering and approvals, and are quoted separately from the standard starting price.

05Can the dwelling be rented separately?+

Yes. In Queensland, a self-contained secondary dwelling can be rented separately from the main home, including to tenants who are not part of the main household. The relevant planning and building approvals, rental standards and tenancy requirements must be met.

Let us know whether you’re building for family accommodation or rental use so we can consider your intended use when assessing the property.

06Do you build on sloping sites?+

Raised designs on steel stumps are available for suitable sloping sites. The foundation solution depends on the slope, soil, access and engineering, and steeper or difficult-access blocks will generally cost more than a flat, easily accessible site.

07What BAL rating is included?+

The standard package and any published starting price are based on a BAL Low site. If the property requires a higher bushfire attack level, the materials, construction details and additional cost are assessed specifically for that site.

08Where do you build secondary dwellings and granny flats?+

We build across the Sunshine Coast, Noosa Hinterland, Mary Valley and Gympie regions. Submit your property address through our enquiry form so we can review access, services and the practical fit of your preferred design.

Not sure which design fits?

Start with your block,
budget and goal.

You do not need to know which design will suit yet. Send us your property details, budget and goal; our team will review them and explain the practical next step.

You don’t need to have everything worked out before getting in touch. Sending an enquiry does not commit you to paid design work. We’ll explain the next step and agree any pre-construction fee with you before proceeding.

Enquire about your property

Prefer to speak with us first? Call Connor on 0409 626 877 or email us.