{"id":99480,"date":"2026-05-21T06:05:37","date_gmt":"2026-05-20T20:35:37","guid":{"rendered":"https:\/\/www.solarquotes.com.au\/blog\/?p=99480"},"modified":"2026-05-20T18:06:00","modified_gmt":"2026-05-20T08:36:00","slug":"builder-installed-solar-your-choice-or-theirs","status":"publish","type":"post","link":"https:\/\/www.solarquotes.com.au\/blog\/builder-installed-solar-your-choice-or-theirs\/","title":{"rendered":"Builder-Installed Solar: Your Choice Or Theirs?"},"content":{"rendered":"<p><img decoding=\"async\" class=\"alignnone size-full wp-image-99482\" src=\"https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2026\/05\/builders-solar.jpg\" alt=\"Builder installed solar\" width=\"1200\" height=\"630\" srcset=\"https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2026\/05\/builders-solar.jpg 1200w, https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2026\/05\/builders-solar-300x158.jpg 300w, https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2026\/05\/builders-solar-1024x538.jpg 1024w, https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2026\/05\/builders-solar-768x403.jpg 768w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/>If you\u2019re building a new home and assuming solar can be sorted out later, there\u2019s something many buyers don\u2019t realise until it\u2019s too late: by the time it becomes a serious conversation, the important decisions may already have been made.<\/p>\n<h2><!--more-->Can You Use Your Own Solar Installer For A New Build?<\/h2>\n<p>Builders often bundle solar into the build contract alongside everything else \u2014 flooring, lighting, appliances and air conditioning. But unlike most inclusions, solar can become tied to approvals, energy ratings, construction scheduling and site access rules. That\u2019s why homeowners who assume they can simply \u201csort it out later\u201d sometimes discover they have far less flexibility than expected.<\/p>\n<p>As we\u2019ve <a href=\"https:\/\/www.solarquotes.com.au\/blog\/solar-mistake-new-home-build\/\">covered previously<\/a>, getting a solar installer involved before the plasterboard goes up can save a lot of regret. In many cases though, the real issue starts even earlier \u2014 before the contract is signed.<\/p>\n<p>Sometimes. But once a contract is signed, the builder usually controls the site, the trades and the agreed scope of works.<\/p>\n<p>Before signing, buyers may be able to:<\/p>\n<ul>\n<li>remove solar from the contract<\/li>\n<li>negotiate different equipment<\/li>\n<li>arrange prewiring for future upgrades<\/li>\n<li>or organise their own installer<\/li>\n<\/ul>\n<div id=\"attachment_97297\" style=\"width: 1085px\" class=\"wp-caption alignnone\"><img decoding=\"async\" aria-describedby=\"caption-attachment-97297\" class=\"wp-image-97297 size-full\" src=\"https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2026\/01\/wiring-new-build-e1768799613907.jpg\" alt=\"Wiring in a new build\" width=\"1075\" height=\"850\" srcset=\"https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2026\/01\/wiring-new-build-e1768799613907.jpg 1075w, https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2026\/01\/wiring-new-build-e1768799613907-300x237.jpg 300w, https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2026\/01\/wiring-new-build-e1768799613907-1024x810.jpg 1024w, https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2026\/01\/wiring-new-build-e1768799613907-768x607.jpg 768w\" sizes=\"(max-width: 1075px) 100vw, 1075px\" \/><p id=\"caption-attachment-97297\" class=\"wp-caption-text\">Getting the prewiring for solar right is far easier during the construction phase than later on.<\/p><\/div>\n<p>After signing, things get much harder.<\/p>\n<p>At that point, changes usually become contract variations. Builders may also refuse access to outside trades during construction for reasons involving scheduling, liability and warranty responsibility.<\/p>\n<p>So while homeowners are not necessarily \u201cforced\u201d to use a builder\u2019s installer in a legal sense, the practical reality is that the builder often controls what happens once construction is underway.<\/p>\n<p>That\u2019s the part many people don\u2019t realise.<\/p>\n<h2>Why Do Builders Prefer Their Own Solar Systems?<\/h2>\n<p>Some homeowners assume builders only push bundled solar because it\u2019s profitable. And there can certainly be margin built into these systems.<\/p>\n<p>But there\u2019s also a practical side.<\/p>\n<p>Builders are trying to deliver a completed home on time, pass inspections and avoid delays. Solar interacts with roofing work, electrical rough-in, certification paperwork and final approvals. Using a standard installer and system makes that process simpler and more predictable.<\/p>\n<p>The downside is that \u201cbuilder solar\u201d is often designed around getting the house finished efficiently, rather than optimising it for future electrification.<\/p>\n<p>That\u2019s one reason some homeowners end up disappointed with small systems that feel outdated quickly.<\/p>\n<h2>Are New Homes Actually Required To Have Solar?<\/h2>\n<p>This is where a lot of confusion creeps in.<\/p>\n<p>Many homeowners are told solar is mandatory under energy efficiency rules, particularly in Victoria and NSW. But the reality is more nuanced.<\/p>\n<p>New homes must comply with energy efficiency requirements under the National Construction Code (NCC). Depending on the state and design, rooftop solar can help achieve the required rating.<\/p>\n<p>But that doesn\u2019t automatically mean every new home is legally required to have solar panels.<\/p>\n<p>In many cases, solar is simply the cheapest or easiest way for a builder to meet the standard. Better insulation, more efficient heating and cooling, improved glazing or upgraded hot water systems may also be used.<\/p>\n<p>So homeowners sometimes hear:<\/p>\n<blockquote><p>\u201cSolar is required\u201d<\/p><\/blockquote>\n<p>when the more accurate explanation may be:<\/p>\n<blockquote><p>\u201cThis design relies on solar to meet the target rating.\u201d<\/p><\/blockquote>\n<h2>Why Tiny &#8216;Compliance Systems&#8217; Keep Showing Up<\/h2>\n<p>This also explains why some new homes end up with small solar systems \u2014 sometimes around 3kW \u2014 even when homeowners plan to electrify heavily later.<\/p>\n<p>If the system is mainly there to meet the energy rating, the builder\u2019s priority is often simply achieving compliance at the lowest cost.<\/p>\n<p>That can leave homeowners with systems that technically satisfy requirements but don\u2019t match how the home will actually be used.<\/p>\n<p>Later upgrades can also become more complicated than expected. A small inverter may need replacing entirely, roof layouts may not suit expansion cleanly, and homeowners can end up effectively paying twice.<\/p>\n<div id=\"attachment_99494\" style=\"width: 1034px\" class=\"wp-caption alignnone\"><img decoding=\"async\" aria-describedby=\"caption-attachment-99494\" class=\"wp-image-99494 size-full\" src=\"https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2026\/05\/solar-new-build.jpg\" alt=\"Solar on a new build\" width=\"1024\" height=\"608\" srcset=\"https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2026\/05\/solar-new-build.jpg 1024w, https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2026\/05\/solar-new-build-300x178.jpg 300w, https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2026\/05\/solar-new-build-768x456.jpg 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><p id=\"caption-attachment-99494\" class=\"wp-caption-text\">If you&#8217;re planning solar on a new build, get it right from the beginning.<\/p><\/div>\n<h2>The Real Problem Is Timing<\/h2>\n<p>A lot of homeowners assume they can sort the solar out later \u2014 swap installers, upgrade the system, or replace the builder\u2019s setup after handover.<\/p>\n<p>But by then, the house design, approvals and construction schedule may already be based around that original system.<\/p>\n<p>That\u2019s why experienced installers often recommend getting solar advice early in the building process \u2014 ideally before contracts are finalised, not after the roof is on.<\/p>\n<p>Because once construction starts, flexibility tends to disappear quickly.<\/p>\n<h2>What Should Homeowners Do?<\/h2>\n<p>The best time to think seriously about solar is before signing the build contract.<\/p>\n<p>That doesn\u2019t necessarily mean rejecting builder-installed solar. Some systems may be perfectly adequate. But it does mean getting clear on a few key things early:<\/p>\n<ul>\n<li>what is included in the build and how much can be changed<\/li>\n<li>whether solar is required as part of the home\u2019s energy efficiency requirements<\/li>\n<li>how future upgrades like EV charging or batteries have been considered<\/li>\n<\/ul>\n<p>Once construction is underway, options tend to narrow. What looks like a simple change can turn into a redesign of other parts of the build or a much more expensive variation than expected.<\/p>\n<p>Don\u2019t assume solar is something you can always \u201cfix later\u201d. Sometimes you can. Sometimes the build has already set the key decisions.<\/p>\n<p>If you\u2019re planning a new home and want to understand how solar fits into the design process before anything is finalised, it\u2019s worth getting advice from installers who regularly work with new builds.<\/p>\n<p>For more on getting solar right, read our deep dive <a href=\"https:\/\/www.solarquotes.com.au\/panels\/\">guide on solar panels.<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>If you\u2019re building a new home and assuming solar can be sorted out later, there\u2019s something many buyers don\u2019t realise until it\u2019s too late: by the time it becomes a serious conversation, the important decisions may already have been made.<\/p>\n","protected":false},"author":29,"featured_media":99482,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[57],"tags":[],"class_list":["post-99480","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-solar-installation","entry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.6 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Builder-Installed Solar: Your Choice Or Theirs?<\/title>\n<meta name=\"description\" content=\"Many new home buyers assume solar is a simple add-on, but key decisions are often made earlier. Here\u2019s what to know before signing.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.solarquotes.com.au\/blog\/builder-installed-solar-your-choice-or-theirs\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Builder-Installed Solar: Your Choice Or Theirs?\" \/>\n<meta property=\"og:description\" content=\"Many new home buyers assume solar is a simple add-on, but key decisions are often made earlier. Here\u2019s what to know before signing.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.solarquotes.com.au\/blog\/builder-installed-solar-your-choice-or-theirs\/\" \/>\n<meta property=\"og:site_name\" content=\"SolarQuotes Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/SolarQuotes\/\" \/>\n<meta property=\"article:published_time\" content=\"2026-05-20T20:35:37+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2026\/05\/builders-solar.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"630\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Kim Wainwright\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@solar_quotes\" \/>\n<meta name=\"twitter:site\" content=\"@solar_quotes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.solarquotes.com.au\\\/blog\\\/builder-installed-solar-your-choice-or-theirs\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.solarquotes.com.au\\\/blog\\\/builder-installed-solar-your-choice-or-theirs\\\/\"},\"author\":{\"name\":\"Kim Wainwright\",\"@id\":\"https:\\\/\\\/www.solarquotes.com.au\\\/blog\\\/#\\\/schema\\\/person\\\/9adafb58c24443f417fa424faa925d85\"},\"headline\":\"Builder-Installed Solar: Your Choice Or Theirs?\",\"datePublished\":\"2026-05-20T20:35:37+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.solarquotes.com.au\\\/blog\\\/builder-installed-solar-your-choice-or-theirs\\\/\"},\"wordCount\":951,\"commentCount\":2,\"publisher\":{\"@id\":\"https:\\\/\\\/www.solarquotes.com.au\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.solarquotes.com.au\\\/blog\\\/builder-installed-solar-your-choice-or-theirs\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.solarquotes.com.au\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/05\\\/builders-solar.jpg\",\"articleSection\":[\"Solar Installation\"],\"inLanguage\":\"en-AU\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.solarquotes.com.au\\\/blog\\\/builder-installed-solar-your-choice-or-theirs\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.solarquotes.com.au\\\/blog\\\/builder-installed-solar-your-choice-or-theirs\\\/\",\"url\":\"https:\\\/\\\/www.solarquotes.com.au\\\/blog\\\/builder-installed-solar-your-choice-or-theirs\\\/\",\"name\":\"Builder-Installed Solar: Your Choice Or Theirs?\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.solarquotes.com.au\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.solarquotes.com.au\\\/blog\\\/builder-installed-solar-your-choice-or-theirs\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.solarquotes.com.au\\\/blog\\\/builder-installed-solar-your-choice-or-theirs\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.solarquotes.com.au\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/05\\\/builders-solar.jpg\",\"datePublished\":\"2026-05-20T20:35:37+00:00\",\"description\":\"Many new home buyers assume solar is a simple add-on, but key decisions are often made earlier. 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