A Thai Builders Cost Estimate For Constructing Our Thai Retirement House
We actually received the quotation from a Thai builder to build our Thai retirement house in Pakchong shown below in January 2010, but until now I didn’t put it on the website.
I will first of all show you the quotation to build the house as received from the Thai builder in Pakchong and then show you a cleaned-up version I made in Excel speadsheet format.
Basis For The House Build Quotation
The quotation to build the Thai house was based on the drawings that I had made in January 2010 and not on the more accurate drawings made by our Thai Architect. To avoid the need to go to another webs page to refer to the house drawings, I have repeated them below.
Our Thai House Plan Second Floor
My Concept Drawing For Pakchong Thai House Front Elevation
The Actual Quotation For Building The House In Thailand As Received From The Thai Builder In Pakchong, Thailand
The house configuration is in fact identical to that used to obtain the first budget cost that was provided by the Kensington Company on the the Budget Price Of Building A House In Thailand web page.
The cost estimate on that web page was estimated by using unit rates of 15,000 and 20,000 Baht/m2 applied to the floor areas given in the table below:-
| The ground floor plan area is about | 60 | m2 |
| The first floor plan area is about | 75 | m2 |
| Total area | 135 | m2 |
This resulted in a cost estomate of 1,950,000 to 2,600,000 Baht.
Now compare that with the price we received froma Thai builder as detailed on the quotation below of 2.7 million Baht. Perhpas the unit rate method of estimating construction costs is not so inaccurate after all!
Page One Of A Quotation From A Thai Builder To Construct Our House In Pakchong
Page Two Of A Quotation From A Thai Builder To Construct Our House In Pakchong
The Same Information From The Thai Builder’s House Quotation Typed Into An Excel Spreadsheet
Because the information shown in the quotation to build the house as received from the Thai builder is difficult for you read I have typed it into an Excel spreadsheet and this is shown in the images below. Yes, I know that these are also difficult to read due to the small size of the images, therefore just click on the images to see a full size version as a pdf file.
Page One Of The Excel Version Of The House Cost Quotation From A Thai Builder
Page Two Of The Excel Version Of The House Cost Quotation From A Thai Builder
Using Bills Of Quantity (BOQ) To Calculate House Construction Costs
The above cost estimate introduces the subject of using Bills of Quantity (BOQ) in the preparation of quotations or estimates for the cost of constructing a house.
A BOQ is a line-by-line listing of all the materials and components used in the construction of the house, together with columns for quantities and cost information. The spreadsheet shown above illustrates the form of BOQs, but a proper BOQ is far more detailed and runs into many pages.
In my opinion there is no better way to accurately estimate the cost of constructing a house than by having fully detailed BOQ prepared. In fact I have commission the Kensington Company to make a set of BOQs for me based on the final construction drawings that they also produced. There are various views on the pros and cons if issuing BOQs to builders in thailand. There is a good post about that subject on the “New House Plans And Building A House in Thailand” web page.
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