Campaign Landing Page for Tile Cleaning business

We're looking for a landing page designer/developer to create a high-converting Google Ads landing page for our professional tile cleaning business. We're a Sydney-based company with over 35 years in business and receive a steady stream of high-intent traffic from Google Ads. We know there's an opportunity to improve our conversion rate, but despite in-house attempts, we haven't achieved the results we're looking for. The project: Build a dedicated campaign landing page focused on lead generation. The page may sit outside our existing website if that's the best approach. The primary goal is to maximise quote requests. We'd like ownership of the page and the ability to make future content updates ourselves. We'll supply all copy, images and brand assets, although we're happy to receive recommendations on improving the messaging or page structure if you have CRO experience. If this sounds like a good fit, could you please provide: An approximate cost. An estimated timeframe. A few examples of high-converting landing pages you've built, particularly for service businesses. Whether you have experience with conversion rate optimisation (CRO) and Google Ads landing pages.