Replacing several windows and doors at the same time can be a practical way to improve the appearance, comfort, ventilation, security, and energy efficiency of a property. However, one of the first questions homeowners usually ask is: would 7 windows and 2 doors cost?
The actual cost of 7 windows and 2 doors depends on several factors, including the window style, door design, glass thickness, frame material, installation requirements, transportation, GST, and any additional work required at the property.
Based on the price list provided, the basic rates include different window and door options such as fixed windows, casement windows, casement doors, top-hung windows, French windows, French doors, two-track sliding windows, and three-track sliding windows. The listed rates should be treated as base prices because freight, GST, and installation may be additional.
If you are planning to replace seven windows and two doors, understanding each component of the quotation can help you estimate the overall window and door replacement cost before beginning the project.
Cost of 7 Windows and 2 Doors: Basic Estimate
There is no single fixed price for seven windows and two doors because every project can use a different combination of products.
For example, according to the supplied price list, the approximate base rates are:
| Product Type | Listed Rate |
| Fixed Window | 360 |
| Casement Window | 520 |
| Casement Door | 660 |
| Top-Hung Window | 560 |
| French Window | 710 |
| French Door | 760 |
| 2-Track Window | 410 |
| 3-Track Window | 510 |
The list also indicates additional charges for items such as 6 mm glass, freight, GST at 18%, and installation. Therefore, the final quotation can be higher than the basic product rates.
For example, if a project uses seven fixed windows at 360 each and two casement doors at 660 each, the basic product calculation would be:
7 × 360 = 2,520
2 × 660 = 1,320
Basic total = 3,840
GST at 18% on 3,840 would be:
3,840 × 18% = 691.20
Therefore, the subtotal including 18% GST would be approximately:
4,531.20
This example does not include freight, installation, or any additional glass charges. Consequently, the final cost to replace 7 windows and 2 doors may be different depending on the specifications selected.
What Determines the 7 Windows and 2 Doors Replacement Cost?
The 7 windows and 2 doors replacement cost is influenced by more than simply counting the number of openings. Two properties with exactly seven windows and two doors can have completely different project prices.
The main factors include the size of each opening, product design, glass specification, frame material, hardware, installation requirements, and site conditions.
1. Window Style
The type of window selected has a direct effect on the total price.
A fixed window is generally a simpler design because it does not open. On the supplied list, the fixed window rate is 360. A casement window is listed at 520, while top-hung, French, two-track, and three-track options have different prices.
If your seven windows are all the same style, calculating the base price is relatively straightforward. However, if you choose different styles for different rooms, the calculation needs to be performed separately for each type.
2. Door Style
Doors generally have different prices from windows because they are larger and require suitable hardware, handles, locks, hinges, and stronger structural components.
The supplied price list shows a casement door at 660 and a French door at 760.
For this reason, the cost of 7 windows and 2 doors can increase when premium or larger door designs are selected.
3. Glass Specification
Glass is another important part of the overall quotation.
Your supplied cost list specifically mentions 6 mm glass as an additional consideration. The exact glass requirement can depend on the size of the opening, safety requirements, location, design, and the manufacturer’s specifications.
If a project requires upgraded or thicker glass, the material cost can increase.
4. Installation
The window installation cost and door installation cost should be considered separately when preparing a budget.
The supplied handwritten quotation indicates that installation is extra. This means the listed product rates should not automatically be treated as the complete installed price.
Installation can involve removing the old frames, preparing the opening, positioning the new product, fixing it securely, sealing the edges, checking operation, and cleaning the work area.
5. Freight and Transportation
Freight is another possible addition to the final quotation.
The supplied list specifically mentions freight as extra. Transportation costs can vary according to the distance between the manufacturer or supplier and the installation location, the size of the order, and delivery requirements.
Therefore, freight should be confirmed before calculating the final window and door replacement cost.
6. GST
The provided cost sheet mentions GST at 18% extra.
For example, if the taxable base amount is 10,000, an 18% GST would add 1,800, bringing the subtotal to 11,800 before any separately charged installation or freight.
Always check the current invoice and supplier quotation for the applicable tax treatment.
Example Cost Calculations for 7 Windows and 2 Doors
The easiest way to understand the cost of 7 windows and 2 doors is to look at different combinations.
Example 1: Seven Fixed Windows + Two Casement Doors
Suppose all seven windows are fixed windows and both doors are casement doors.
7 fixed windows × 360 = 2,520
2 casement doors × 660 = 1,320
Basic product cost = 3,840
With 18% GST:
GST = 691.20
Subtotal including GST = 4,531.20
Freight, installation, and any additional glass charges would be added separately.
This is only an example based on the rates supplied and should not be treated as a universal market price.
Example 2: Seven Casement Windows + Two Casement Doors
If all seven windows are casement windows:
7 × 520 = 3,640
Two casement doors:
2 × 660 = 1,320
Therefore:
Basic product cost = 4,960
At 18% GST:
GST = 892.80
Subtotal including GST = 5,852.80
Again, installation, freight, and additional glass are not included in this calculation.
Example 3: Seven 2-Track Windows + Two French Doors
For a different configuration, seven two-track windows at 410 each would cost:
7 × 410 = 2,870
Two French doors at 760 each:
2 × 760 = 1,520
Basic product cost = 4,390
18% GST:
4,390 × 18% = 790.20
Subtotal including GST = 5,180.20
This demonstrates why the final cost to replace 7 windows and 2 doors depends heavily on the selected product types.
Comparing the Window Options
Choosing the right window style is not simply about selecting the lowest price. Different designs can provide different benefits depending on where they are installed.
Fixed Windows
Fixed windows are designed primarily to provide natural light and visibility rather than ventilation. Because they do not open, they can be suitable for areas where airflow is not required.
The supplied rate for a fixed window is 360.
For homeowners looking to control the window installation cost, fixed windows may provide a simpler starting point, although the final price still depends on dimensions, glass, installation, and other specifications.
Casement Windows
Casement windows are designed to open and allow ventilation. They can be useful in bedrooms, living rooms, kitchens, and other areas where fresh air is important.
The listed rate is 520 per casement window.
When seven casement windows are required, the base calculation is:
7 × 520 = 3,640
This is before GST, freight, installation, and additional glass charges.
Top-Hung Windows
Top-hung windows are another option shown in the supplied quotation at 560.
The opening mechanism can make this style suitable for certain ventilation and weather-management requirements. The appropriate configuration depends on the room, opening size, and design requirements.
French Windows
The supplied rate for a French window is 710.
French-style designs can create a different visual appearance compared with simpler window configurations. However, the higher listed rate means that selecting this design for seven openings can significantly change the overall window and door replacement cost.
Two-Track Windows
Two-track sliding windows are listed at 410.
Sliding designs can be convenient where the available space makes an outward-opening window impractical. Because the panels slide along tracks, they can also be useful in areas where space management is important.
Three-Track Windows
Three-track windows are listed at 510.
They offer a different configuration from two-track systems and may provide additional opening flexibility depending on the design.
The exact advantages will depend on the selected product and opening dimensions.
Comparing Door Options
The two doors in your project can also have a significant effect on the overall quotation.
Casement Doors
The supplied rate for a casement door is 660.
For two casement doors:
2 × 660 = 1,320
This amount represents the listed base product cost before applicable additional charges.
French Doors
French doors are listed at 760 each.
For two French doors:
2 × 760 = 1,520
That means choosing two French doors instead of two casement doors increases the listed base door cost by:
1,520 − 1,320 = 200
The final difference can change if the two options have different glass, hardware, installation, or other specifications.
Window Installation Cost and Door Installation Cost
Many homeowners focus on product prices and forget to ask about installation. This can make a quotation appear lower than the final amount.
The window installation cost can depend on how many windows are being replaced, whether the existing windows need to be removed, the condition of the openings, accessibility, floor level, and the amount of finishing work required.
Similarly, the door installation cost may depend on door size, frame preparation, removal of existing doors, hardware installation, alignment, sealing, and finishing.
For seven windows and two doors, it is useful to request installation as a separate line item in the quotation. This makes it easier to compare suppliers and understand exactly what you are paying for.
Why the Final Price Can Be Different From the Basic Rate
A basic product rate is not always the same as a complete project price.
For the cost of 7 windows and 2 doors, the following items should be checked before approving a quotation:
- Product size
- Window style
- Door style
- Frame material
- Glass thickness
- Glass type
- Hardware
- Handles and locks
- Removal of old windows
- Removal of old doors
- Installation
- Sealing
- Finishing work
- Freight
- GST
- Any structural modification
This checklist can prevent unexpected additions to the final bill.
How to Calculate the Cost to Replace 7 Windows and 2 Doors
A simple calculation method can help homeowners understand a quotation.
First, list the seven windows individually according to their type.
For example:
- 3 fixed windows
- 2 casement windows
- 1 two-track window
- 1 three-track window
Then list the two doors.
For example:
- 1 casement door
- 1 French door
Using the supplied rates:
3 × 360 = 1,080
2 × 520 = 1,040
1 × 410 = 410
1 × 510 = 510
1 × 660 = 660
1 × 760 = 760
The basic product total would therefore be:
1,080 + 1,040 + 410 + 510 + 660 + 760 = 4,460
At 18% GST:
4,460 × 18% = 802.80
Subtotal including GST:
5,262.80
Freight, installation, and any additional glass charges would then be added according to the supplier’s quotation.
This approach provides a transparent way to calculate your 7 windows and 2 doors replacement cost.
How to Reduce Your Window and Door Replacement Cost
Reducing the project cost does not necessarily mean selecting the cheapest product. Instead, homeowners can focus on selecting specifications that match the actual requirements of each room.
For example, a fixed window may be suitable for a location where ventilation is not necessary, while a casement or sliding window may be more appropriate where airflow is important.
You can also ask the supplier for a complete quotation covering products, glass, GST, freight, installation, and finishing. A complete quotation makes it easier to understand the real window and door replacement cost.
Another useful approach is to compare quotations based on the same specifications. Comparing one quotation for basic glass with another quotation for upgraded glass can produce a misleading price difference.
Questions to Ask Before Ordering
Before approving your project, ask the installer or supplier:
Is installation included?
Confirm whether the quoted price includes installation or whether the window installation cost and door installation cost are separate.
Is GST included?
The supplied list indicates GST at 18% extra, so confirm whether the quoted amount is before or after GST.
Is freight included?
The quotation notes freight as extra. Ask for the exact transportation charge before finalizing the order.
Is glass included?
Confirm the glass thickness and whether the listed rate includes the required glass.
Is old-frame removal included?
Replacing windows and doors can require removing the existing frames. Ask whether demolition and disposal are included.
Are finishing works included?
Ask whether sealing, plaster repair, trim work, and other finishing requirements are included.
Frequently Asked Questions
How much does it cost to replace 7 windows and 2 doors?
The cost to replace 7 windows and 2 doors depends on the selected window and door styles, dimensions, glass, installation, freight, and GST. Using the supplied rates, a basic product-only calculation can range substantially depending on the combination selected.
What is the cost of 7 windows and 2 doors?
There is no single fixed cost of 7 windows and 2 doors because different window and door styles have different listed prices. For example, the supplied rates range from 360 for a fixed window to 710 for a French window, while the listed door rates are 660 for a casement door and 760 for a French door.
What is the window installation cost?
The window installation cost depends on the number and size of windows, site conditions, removal requirements, accessibility, and finishing work. In the supplied quotation, installation is listed as extra.
What is the door installation cost?
The door installation cost depends on the door type, dimensions, hardware, existing frame condition, removal requirements, and installation complexity. It should be confirmed separately with the installer.
Does the quoted price include GST?
According to the supplied cost list, GST at 18% is extra. However, the final invoice should be checked because tax treatment and quotation terms can vary.
Is 6 mm glass included in the price?
The supplied note indicates that 6 mm glass is an additional consideration. Ask the supplier whether the quoted product price includes the required glass or whether it will be charged separately.
Does freight come with the window and door price?
The provided list indicates that freight is extra. Therefore, transportation should be added when calculating the final project cost.
Can all seven windows be the same type?
Yes, they can be if that design is suitable for the property’s requirements. However, many homes use different window styles in different rooms based on ventilation, access, space, and appearance.
Why can two quotations for the same number of windows be different?
Two quotations can differ because of window dimensions, frame materials, glass specifications, hardware, installation, freight, taxes, finishing work, and product quality. The number of windows alone does not determine the complete project price.
How can I get an accurate replacement quotation?
Provide the supplier with the number and dimensions of each opening, preferred window and door styles, glass requirements, property location, and installation requirements. Ask for a written quotation that separates product costs, GST, freight, installation, and additional work.
Final Thoughts on the Cost of 7 Windows and 2 Doors
The cost of 7 windows and 2 doors cannot be determined accurately from quantity alone. The supplied price list shows that different window and door designs have different base rates, and additional charges such as 6 mm glass, freight, GST, and installation can affect the final amount.
For example, seven fixed windows and two casement doors produce a basic product cost of 3,840 using the supplied rates. After adding 18% GST, the subtotal becomes 4,531.20, before freight, installation, and other applicable extras.
If you choose casement, French, top-hung, two-track, or three-track designs, the calculation will change. Therefore, the best way to determine the 7 windows and 2 doors replacement cost is to calculate each opening according to its exact type and then add glass, installation, freight, and applicable taxes.
A detailed written quotation is particularly important when planning a complete window and door replacement cost, because it allows you to see exactly what is included and what is charged separately.
In short, start with the base rates, calculate each of the seven windows and two doors individually, add the applicable glass and other materials, then include window installation cost, door installation cost, freight, and 18% GST as specified by the supplier. This gives you a much clearer picture of the actual project budget rather than relying on a simple per-window estimate.