Replacing internal doors can refresh several rooms at once, but the price on a door leaf is only the beginning of the cost. A complete Australian renovation quote may also include hinges, handles, fitting, trimming, painting, frame repairs and disposal. The biggest budget question is whether you are replacing doors within sound existing frames or replacing the entire door-and-frame assembly.
For early planning, build your estimate door by door. A bedroom door, glazed study door and bathroom privacy door may need different hardware and construction even when their appearance matches. This guide shows how to compare scopes, assess useful upgrades and create an AUD budget without confusing illustrative allowances with current supplier quotations.
Define what “door replacement” includes
A door leaf is the moving panel. The jamb or frame surrounds it, the architrave covers the junction with the wall, and the hardware makes the assembly operate. A quote for a leaf alone does not include all those parts.
Replacing the leaf within an existing frame can be contained work if the opening is sound and compatible. Replacing the frame usually affects surrounding trim and paintwork. Changing the opening width or switching to a cavity slider introduces a different level of construction.
Write down the problem you are solving. If the door only looks dated, a new leaf may be enough. If it rubs, rattles or will not latch, the cause may be the hinges, frame, floor height or building movement. Buying a new door without diagnosis can leave the original problem unresolved.
- Leaf only: retain the existing sound frame and suitable trim.
- Leaf and hardware: replace hinges, latch and handles as well as the panel.
- Complete assembly: replace the leaf, frame, hardware and affected trims.
- Opening alteration: change width, position or operating type, with associated wall work.
- Special-performance assembly: assess acoustic, fire, accessibility or other requirements separately.
If you are considering a change of operation, compare cavity sliding doors with hinged doors before treating the conversion as a simple replacement.
Choose the construction for each room
Lightweight internal doors
Lightweight doors can suit ordinary rooms where appearance and basic separation are the main goals. They are easier to operate than a heavy leaf, but construction and face material influence robustness. Ask the supplier how much trimming is permitted and where hardware can be installed.
Hume’s Australian range distinguishes honeycomb-core flush doors from solid-core products. That distinction is more useful than judging quality from a painted showroom face. Two doors can look identical after painting while differing in weight, internal construction and suitability for hardware.
Solid-core doors
A solid-core option can feel more substantial and may form part of an improved acoustic door assembly. The surrounding frame, seals, gaps and installation still matter. A heavier leaf alone does not guarantee quiet between rooms.
Check that hinges and the existing frame can support the chosen door. If the original frame is damaged or poorly fixed, the upgrade may require remedial carpentry. Include that assessment before ordering rather than asking the installer to make an unsuitable frame carry more weight.
Pay for performance where it is useful
Prioritise a study used for calls, a bedroom beside the living area or another room where privacy has a clear purpose. There may be little benefit in using the same expensive construction for a small linen cupboard. A consistent paint colour and handle family can preserve a coordinated appearance across different door specifications.
For a privacy project, consider the surrounding internal wall soundproofing options as well. Sound that bypasses the door through another path will limit the result.
Glazed and decorative doors
A glazed study or living-room door can share light while separating activities. Specify the glass type and privacy level with the supplier, including the relevant safety requirements for the installation. Do not substitute ordinary decorative glass based only on appearance.
Routed, panelled and timber-veneer doors may add supply and finishing costs. Check whether the quoted surface is paint-ready, primed, factory finished or intended for staining. The finishing schedule can materially change the price of several doors.
Use an illustrative budget to understand the components
The following allowances are deliberately hypothetical, not a survey of Australian prices. They help you build a scope-based budget before obtaining measured quotations. All example amounts are AUD and include GST. They assume ordinary accessible internal openings with no hazardous material work or structural alteration.
| Illustrative option | Low allowance | High allowance | Assumed scope |
|---|---|---|---|
| Basic leaf replacement | AUD $450 | AUD $800 | Leaf, basic hardware allowance, fitting and painting in a sound frame |
| Upgraded solid-core replacement | AUD $700 | AUD $1,250 | Upgraded leaf and compatible hardware, fitting and painting |
| Leaf with new frame and trims | AUD $1,000 | AUD $1,900 | New assembly, local making good and paint allowance |
These ranges describe different hypothetical budgets, not guaranteed available prices. Custom sizes, specialist seals, premium handles, damaged walls and small-job call-outs may fall outside them. Replace the allowances with contractor and supplier prices for your home.
For a worked example, assume six ordinary doors at AUD $620 each and two upgraded doors at AUD $950 each. Six multiplied by AUD $620 is AUD $3,720; two multiplied by AUD $950 is AUD $1,900. The combined allowance is AUD $5,620 including GST. Add an illustrative AUD $480 for local frame repairs and AUD $300 for disposal and protection, giving AUD $6,400 including GST.
If you reserve another AUD $640 for uncertainty, the planning envelope becomes AUD $7,040 including GST. Keep that reserve separate from the agreed contract price. It is money available if required, not an instruction for the contractor to spend it.
Place the project within your broader home renovation budget, especially if flooring and painting will happen at the same time.
Measure existing openings before ordering
Do not assume all internal doors in a house are the same size. Older homes may contain altered openings, different thicknesses or non-standard heights. Measure each location and have the supplier or installer confirm the order schedule.
The installer needs more than the visible opening width. Door thickness, frame depth, hinge positions, latch position and floor clearances affect compatibility. An old door is useful evidence but may itself have been heavily trimmed to fit a distorted opening.
Ask who carries responsibility for final measurements. If the homeowner orders doors before the carpenter measures, an incorrect size can create a dispute and delay. Written confirmation of the schedule is particularly valuable for custom-made leaves that cannot readily be returned.
Coordinate with new flooring
A thicker floor finish changes the space beneath the door. Underlay, levelling and transition strips can all contribute. The door installer should use the planned finished floor level rather than assuming the existing level will remain.
Do not demand the smallest possible gap without considering ventilation and the room’s requirements. Bathrooms and rooms served by certain ventilation arrangements may need a designed air path. The appropriate detail should be coordinated with the relevant trade rather than improvised by trimming after installation.
If skirtings and architraves are also changing, decide their profiles together. Refer to the skirting replacement guide so the new doors do not sit awkwardly within mismatched trim.
Hardware can change both use and cost
Count handles by function. Passage sets, privacy sets and cupboard pulls serve different purposes. A bathroom privacy lock should be selected with appropriate emergency access in mind, while a study lock may have another requirement. Ask the supplier to confirm compatible sets for the chosen door.
Test the handle shape in person where practical. A lever that looks elegant can feel uncomfortable or be awkward for someone with limited grip. Consider whether young children, older family members or frequent visitors will use the door.
Hinges, latches and handles should be coordinated in finish, but exact colour names can vary between brands. Compare physical samples if you want a close match. A black handle and a noticeably different black hinge can become distracting across a long hallway.
Specify door stops where needed. Replacing a door and handle without controlling its travel can leave new dents in walls or cabinetry. Check that the stop position protects the handle and does not create an awkward obstruction.
Know when an internal-looking door has special requirements
A door inside a building is not automatically an ordinary bedroom door. Apartment entry doors, certain doors associated with garages and doors in protected building elements may have requirements that extend to the complete assembly. Do not replace one with a standard decorative leaf without checking.
For strata property, establish ownership, approval and any restrictions before ordering. The apartment renovation rules guide explains the broader process. A change that appears cosmetic can affect common property or a required building system.
Heritage joinery may also merit repair rather than replacement. If an original timber door is sound, compare refinishing and hardware adjustment with a new reproduction. The cost decision should include the value of retaining a matching original set, not only the cheapest new leaf.
Get quotations that can be compared line by line
Provide each contractor with the same numbered door schedule. Include a photograph, location, size confirmation, construction, finish and hardware function for every opening. Mark which frames are to remain and which need repair or replacement.
Ask each quote to identify supply, installation, painting and exclusions. Confirm whether the carpenter removes old hardware, whether the painter finishes all required edges, and who repairs marks around the frame. A “fully installed” phrase is not enough if painting is excluded elsewhere.
- Exact door product or an agreed equivalent approval process.
- Hardware brand, model, function and finish.
- Frame repair allowances and how additional defects will be priced.
- Protection, delivery, storage and disposal responsibilities.
- GST status, payment stages and the expected programme.
- Handover adjustments and warranty documentation.
Use the renovation quote comparison guide to identify scope differences before choosing the lowest total.
Replace one door or organise the whole house together
Ordering several doors together can make colour, profile and hardware coordination easier. It can also allow the carpenter and painter to organise their work efficiently, but do not assume a fixed percentage discount. Ask whether the quoted installation price reflects one visit or several and whether rooms must be cleared together.
A staged replacement may be more comfortable for an occupied home. Bedrooms and bathrooms still need usable privacy while work proceeds. Agree which doors will be removed each day, where unfinished leaves will be stored and how the household will use the affected rooms overnight. A plan that works in an empty investment property may be inconvenient in a family home.
Check delivery condition before finishing begins. Record dents, damaged edges or an incorrect profile promptly, and clarify the supplier’s process for replacement. Painting a visibly damaged leaf and trying to resolve the issue later can complicate responsibility. The installer should also confirm the manufacturer’s finishing requirements, including edges affected by permitted trimming.
If you retain old handles as spares, label which doors they came from and keep the matching screws together. If you retain original doors for future restoration, discuss dry storage and protection. Disposal is sensible for some damaged leaves, but significant original joinery should not be thrown away merely because removal is included in a generic quote.
If several doors are being replaced, label the final hardware schedule by room. Record handle finish, privacy function and any agreed door stop. This prevents a correct overall order from producing the wrong hardware in a particular bedroom or bathroom.
Check the result before final payment
Open and close every door several times. Check that it latches without force, moves freely over the finished floor and does not drift unexpectedly because of an unresolved installation issue. Test privacy hardware and any emergency release with the installer present.
Inspect paint coverage, edges, hinge recesses and repaired frames under ordinary room light. Ask for any agreed adjustment to be recorded rather than relying on a verbal promise after the trades have moved on.
Internal door replacement is good value when the scope matches the problem. Retain sound frames where practical, spend on construction and hardware where the room benefits, and coordinate flooring and painting before ordering. The most useful price is the completed cost of a door that fits, operates and looks right in your home.
A related guide to consider while planning this work is Garage Door Replacement Costs in Australia: Sectional vs Roller Doors.