For building your house extension you need to choose between timber frame cavity wall and brick block cavity wall. I go through my tips and tricks including full costs, materials and labour. The pros and cons and I’ll tell you what I always choose and why. Quick teaser….. Cladding options, air tightness, moisture control, space for services, speed off construction. Throughout the vid I mention some additional videos to consider and I’ve listed what those are below. Reasons why ventilation in voids and cavities is so important, and how to avoid making the typical mistakes and avoid condensation in home builds Win the Vapour Barrier War for your Attic extension, Lofts, House Extension and Renovations https://youtu.be/EOAm2mlzfTg My bottom up fully detailed self build multi trades house extension costing template How to COST and BUDGET a house extension - Pricing document download EXPLAINED https://youtu.be/uiSyqZ7X24A How much did I pay to build this HOUSE EXTENSION? Full price, cost breakdown https://youtu.be/Qk_1vCiicMk How to choose sizes for timber frame walls, floors and ceilings Timber sizes for your home build, you don’t need a structural engineer https://youtu.be/qzewVm_CWgs U values explained How I designed this House Extension - start to finish, all the stages https://youtu.be/DM5IZMAEQ4o How I created the cad drawings and pulled the materials list from it GARDEN ROOM Sketchup tutorial build in 12 minutes with Sizes, downloads, order materials from model https://youtu.be/3Or2ZQhWJ1U ATTIC CONVERSION - HOW I DREW IT - from initial sketch to 3D model to 2D construction drawings https://youtu.be/l20hkQjEqDc Links to files for you to download and use, note these are for information only and not to be used for builds without seeking independent professional advice: 1) Comparison and pricing spreadsheet from the video https://docs.google.com/spreadsheets/d/1xquyYoRIQQMKLrbWUb_vQL2SkvcBaxt08L5bZLHgYJU/edit 2) SketchUp comparison file from the video https://drive.google.com/file/d/1onTaizxX1nrW0XniLFggYPh7UR0qJG11/view?usp=drivesdk 00:55 timber frame wall cost and material breakdown 04:05 masonry brick block cavity wall material breakdown 05:15 using SketchUp to get cost comparison 06:14 taking materials from SketchUp and importing into price spreadsheets 06:27 getting prices for materials 06:49 labour costs 07:38 cost per square metre for both wall types 08:03 my top 5 tips and what wall type that I recommend