Hey Sally, This is from the ‘Thermal Mass in Summer’ section from our website, "With correct eave overhang on the North of your building & thermal mass being shielded from direct solar gain we can control the increase in the ambient air temperature of the building. During the day heat gains from external temperature, the occupants of the building, and any electrical lighting and equipment, is absorbed by the exposed thermal mass of the building and releases stored cool within the thermal mass, thus limiting the temperature rise within the space to be within acceptable levels for human thermal comfort. By the end of the day the thermal mass of the building has in turn warmed up, and now as external temperatures reduce the heat can be released and the thermal mass cooled down ready for the start of the next day. However this "regeneration" process is only effective if the building is ventilated at night when the external air temperature has dropped below the internal temperature, to carry away the heat that has been absorbed during the day. This can be achieved through naturally ventilating buildings (opening windows etc.) or the use of automated ventilation systems. This reduces or totally eliminates the need for artificial cooling systems to be installed, thus reducing the overall energy consumption of the building to attain a comfortable living environment." When temperatures do not drop at night for 3-4 nights, our houses are still far more comfortable than outside, warmer than it would be if night ventilation could be achieved, but still a comfortable temperature. In our house we just use ceiling fans during those in-between days! We find that even when it is warmer in our houses in prolonged hot periods than it would be with air-conditioning, the quality of the air and feel of being inside the house is much nicer than what it would be with the everyday use of an air-conditioner – not to mention benefit that not using air-conditioning has on the environment. Hope this answers your question :)

Yes you are right, oskuee, the cost of this renovation was commensurate with its location in a prestige suburb of Sydney. Having said that, the budget was not limitless, so we chose to retain and enhance the bones and style of the original house by making 'simple' changes, rather than reinventing the whole house's look & layout, which would require more extensive and costly changes. This is how I usually approach renovations, to get the most out of the client's budget, no matter what the size or cost of the project is.

When I first wrote in August 2017 we got a lot of great suggestions and comments. At the time we had accepted the limitations of the block (easements, tree, solar access etc). It is now one year later and I can tell you we found a way to move the garage to the south-west corner. This allowed us to move Beds 2 and 3 and the bathroom to the northern side. Pantry and laundry between garage and kitchen/living/dining. I think it was all of the comments and suggestions that encouraged us to look at it again from different angles, rather than just accepting the limitations. Thanks to everyone for their generosity! The solution involved working around a lovely tree (it is nice, just in the wrong spot). It is still in the way (council said we couldn't remove it) but we've opted for a long, curving driveway that starts on the other side of the block and weaves its way around the treeline to the garage entry. Not ideal, because a large portion of the front setback will now be a hard surface, instead of a garden. But if there is one thing that designing teaches you - its all about compromises. Thanks everyone. MB Design & Drafting Shara C Nik Star girlguides oklouise siriuskey genkii saragraham76 Andy Pat brizcs Mel N 3D Home Concepts suancol Caro

executing Owner Builder projects these days really is consolidated to projects that can be self funded - banks and building surveyors are becoming increasingly cautious when it comes to owner builder projects and fair enough too...... Experience/knowledge aside, unless you are retired, on long service leave or have a passive income and have money in the bank, it's questionable whether you'll overall save money when you factor your own time and risk into it.....after helping several clients with owner builds, and doing a couple of my own, (& I know what I'm doing) my opinion of this approach has shifted significantly over the past 15 years or so..........as a general pattern, it starts off as exciting, but the projects are harder to finish, and when the money runs out there's a big risk of being caught in no man's land where you've spend more than anticipated, the jobs unfinished but you need more money to finish it properly to either re-finance of release funds somehow...... My advice (for mental health!) is to approach these projects and engaged with this industry as professionally as possible with clear packaged proposals. Sure build some flexibility into the contract say for choices on finishes etc, but I'd now confidently advise people the best approach for construction projects, to minimise risk and for a most smooth process, is to "front end" investment in comprehensive design, documentation & specification that can then be clearly packaged/presented to a (reputable) builder who can then fix the quote and execute the construction stage far more effectively and efficiently than someone "having a go piecing it all together for the first time", regardless of whether you may have some close industry contacts as support.... Best of luck! Cheers PD :)