Scheduling for Owner Builders
Scheduling for Owner Builders
Scheduling has two distinct and very different applications in the building industry, and our owner builder students have the opportunity to develop skills in both areas.
Firstly, scheduling as it relates to the development of a timeline, is a skill that is as much an art form as it is a science.
That said, owner builder students should recognise the importance of being able to determine a schedule and to drive or manage their projects effectively and with reference to a detailed schedule.
In our Introduction to Project Management course, we outline the basics of developing a realistic construct schedule for you owner builder project.
Using the blank proforma we provide, it is always recommended that you start by 'blanking out' the non work days such as weekends, public holidays etc. Doing this establishes a realistic and visual presentation of those days available to conduct work on your site. It also provides a small buffer to regain or reschedule lost time particularly in those areas where you might be conducting the works yourself.
Next step is to list each of the tasks you can identify as individually being required to complete the project.
Once this is done, think about the order or sequence that the works will need to be completed and the relationship between each task, trade or supply. This is known as determining the 'dependencies'.
Look for end - start dependencies and start - start dependencies, allocate the time assumptions for each task and develop your critical path (the longest time identified by the schedule using end - start dependencies).
Owner builders will need to seek outside advice in most cases to establish a realistic timeline, so don't be afraid to ask your trades or suppliers for their time estimates for their part of contracted works. Additionally seek to get as much information from them in respect to their availability and anything they can foresee that could potentially disrupt your schedule or delay access to the site for following contractors.
The second type of scheduling that is relevant to owner builder students is the production of lists (Schedules) of various building elements.
Most projects undertaken by an owner builder will require some schedules and may include a Prime Cost Schedule, a Window and Door Schedule, a Bracing Schedule etc. Almost all materials required can be broken down into a schedule, which is an efficient way in which the owner builder can identify, organise and manage aspects of their project.
A well written Specification, will always include a Schedule of Finishes. This identifies and documents the treatment of all finished surfaces and may include painting and staining, tile finishes, floor coverings etc.
Take the time to revise the course notes that discuss Scheduling and participate in the forums and chat groups to share information with you fellow owner builder students.
That is what this blog is designed to do. Together, we can make this a powerful tool for all owner builders.
Strongly support taking the time up front to set out a project schedule and document materials requirements it pays off. On my last project I bought a set of plans from a reputable builder to use to get quotations in my area (the original builder did not operate there). I spent an extra few hundred dollars for a quantity survey and found it to be a fantastic resource. All quotes were tendered against exactly the same specification with no opportunity later to say they did not understand the requirement. The price range was significant with the lowest cost builder not responding properly to the spec and hence being eliminated. I ended up with a first quality outcome and was able to include the quantity survey as part of the contract. Disputes were virtually non existent.
Thanks for the tip Thom. I have a few builder friends who have given me some strong guidance on costs for individual pieces of work, but a quantity surveyor sounds like less hassle and less of a demand on friends.
Thanks for the comment Thomas,
At what time do you organise certifiers for inspections. eg arramge dates from timeline, x days/weeks in advance or (unlikely) after the jobs are completed?
In my own are of work (just retired) I have used Gantt Charts for over 20 years and found them a great tool. Unfortunately, in putting together the plans, surveys etc for my DA I have found that people are having trouble fitting into the slots provided! This can be a real problem when they are few choices of professionals and contractors in rural areas
This has opened my eyes to how complex a large project can be. Especially when trying to finish the project quickly. Luckily my project is small and no time constraints to finish quickly.
Hi Sally, a window schedule would be prepared before any construction commenced as part of the CC (Construction Certificate) or Tender documentation stages. Use the schedule for quotes. Some windows I am interested in have long lead times-> looked like I would need to order well before openings were ready. This will be one of my questions for my installer when find one (at very early stage)
This has been a great source of information as i'm usually trying to work out timelines in my head, but with putting it all into a scheduling this will also allow my partner to help & document and refer to.
This relates to question 32 - CPCCCM1013A
The planning and scheduling module was the part I enjoyed the most.
The planning & scheduling module has helped me plan my trades and has given us a good timeframe to work within.
Scheduling during the current weather and material supply issues is just another aspect needing to be allowed for when planning. Adding a few extra weeks may save some rescheduling down the road.
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Rick Heaton is a Building and Construction Industry professional with formal tertiary qualifications in management and training.