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  • Writer's pictureJames Low

Top 5 Mistakes Homeowners Make During a Building & Renovation Project (and How to Avoid Them!)

Renovating or Extending your home is an exciting journey, but it’s not without its challenges. While the end result can be a dream come true, the process itself can sometimes feel like a nightmare — especially if you’re not prepared. To help you navigate your renovation smoothly, we’ve compiled a list of the top five mistakes homeowners often make during a renovation and how you can avoid them.


1 : Understanding the Preliminaries: Key Considerations Before Work Commences

The Mistake: Many homeowners are eager to jump straight into the renovation or building process, assuming that once they have planning drawings in hand, they’re ready to start. However, the reality is that there are several crucial steps and expenses that must be addressed before any physical work begins. Failing to understand these preliminary stages can lead to delays, unexpected costs, and frustration.

How to Avoid It:

  • Know the Sequence of Events:The planning drawings are just the first step. After these are completed, you will often need to involve a structural engineer. The engineer’s role is to provide calculations and structural drawings that ensure your project is safe and compliant with regulations. These are vital for your builder to accurately follow and for ensuring the integrity of the structure.

  • Prepare for Additional Documentation: Depending on your project, you may also need detailed construction or working drawings. These are more comprehensive than planning drawings and provide the builder with specific instructions on materials, dimensions, and techniques to be used. These documents ensure the work is carried out to the exact standards and specifications you expect.

  • Understand Legal Requirements: Before construction begins, certain legal agreements may be necessary. For example, if your project involves building over or near drains, a Build Over Agreement with your local water authority may be required. This ensures that any work done doesn’t negatively impact public sewer systems. Additionally, if your work involves shared walls or is close to your property boundary, you may need a Party Wall Agreement. This is a legal requirement designed to prevent disputes between you and your neighbors by outlining the scope of the work and any precautions needed to avoid damage to their property.

  • Budget for Preliminary Costs:These preliminary stages are essential but often overlooked in budgeting. The cost of engaging a structural engineer, obtaining detailed working drawings, and securing legal agreements can add up. By understanding and planning for these expenses from the outset, you can avoid financial surprises and ensure your project stays on track.


2 : Changing the Plan Mid-Project

The Mistake: It’s common for homeowners to get inspired by new ideas once the renovation is underway—perhaps you’ve seen a feature in a magazine or visited a friend’s newly renovated home and suddenly want to incorporate similar elements into your project. While this creative enthusiasm is understandable, making significant changes once work has begun can lead to a host of issues. These can include delays in the project timeline, increased costs due to reordering materials or redesigning aspects, and even a compromise in the overall quality of the work. Moreover, frequent changes can cause confusion among the construction team, leading to potential mistakes or miscommunication.

How to Avoid It:

  • Plan Thoroughly Beforehand:The best way to prevent mid-project changes is to invest significant time in the planning stage. Work closely with your designer and builder to explore all options, finalize your design, and make all critical decisions before construction begins. Consider creating a vision board or using 3D design tools to visualize the final outcome. This helps ensure that you’re fully satisfied with the design and less likely to want changes later on.

  • Stick to the Plan:Once the project is in motion, it’s crucial to commit to the decisions you’ve made. Trust the planning process and resist the urge to make impulsive changes. If new ideas arise, discuss them with your builder, but weigh the potential impact on the timeline, budget, and overall project goals carefully. Often, what seems like a small change can have a ripple effect, requiring adjustments to multiple aspects of the project.

  • Understand the Impact of Changes:If you must make a change, ensure you fully understand the implications. Consult with your builder to assess how the change will affect the project’s timeline, costs, and final outcome. Sometimes, a seemingly simple alteration can require revisiting designs, obtaining new permits, or ordering additional materials, all of which can add time and expense. Having this discussion upfront allows you to make informed decisions and avoid unpleasant surprises.

  • Allow Flexibility in Finishes: If you anticipate that your preferences might evolve, consider leaving room for flexibility in less critical areas. For example, you might finalize structural elements but leave choices like paint colors, fixtures, or décor until later stages. This way, you can make adjustments based on the latest trends or personal preferences without disrupting the core aspects of the build.


3. Neglecting to Consider the Impact on Daily Life

The Mistake: Many homeowners underestimate how disruptive a renovation can be. Noise, dust, and restricted access to key areas of your home can quickly become overwhelming if not planned for, leading to unnecessary stress.

  • How to Avoid It:

    • Create a Living Plan: Decide early on where you’ll live during the renovation. If you’re staying in your home, ask your builder prior to works starting to set up temporary spaces like a makeshift kitchen or a safe zone. Some areas may need to be blocked off with hoarding to contain dust and noise, ensuring that the rest of your home remains livable.

    • Plan for Utility Disruptions:Work with your builder to schedule any necessary shutdowns of water, electricity, or gas, so you can prepare in advance and minimize inconvenience.

    • Communicate with Your Builder:Regular communication is key. Discuss the project timeline and upcoming disruptions to stay informed and adjust your living plan as needed.



4. Overlooking Finishing Costs

The Mistake: One common mistake in renovations is neglecting to budget for finishing touches such as kitchen cabinets, tiles, bathroom suites, and fixtures. Many builders expect clients to purchase these items separately, which can lead to budget overruns or dissatisfaction if not planned properly.

How to Avoid It:

  • Clarify Responsibilities: At the start of the project, clearly outline what the builder will supply and what you need to purchase yourself. This should include all finishing items like kitchen units, countertops, tiles, bathroom fixtures, and hardware.

  • Budget for Finishes: Ensure your budget includes a reasonable allocation for these finishing touches. Research the costs of the items you want, and factor them into your overall budget from the beginning. This prevents surprises and ensures you have the resources to achieve the look you desire.

  • Communicate Preferences Early: Share your preferences for finishes with your builder early in the process. This will help avoid any mismatches between your vision and the builder’s expectations. If you’re opting for high-end finishes, make sure your budget reflects that choice.

  • Avoid Compromising on Quality: Finishes are often the most visible part of a renovation, affecting both the aesthetic and functional aspects of your home. Skimping on quality to save money can lead to dissatisfaction with the final result. Aim for a balance between cost and quality to ensure that the end product meets your expectations.

  • Consider Long-Term Costs: Investing in quality finishes might have a higher upfront cost but can save you money in the long run by reducing the need for repairs or replacements. Think of it as a long-term investment in the value and enjoyment of your home.


5. Chasing Trends Instead of Timeless Design

The Mistake: It’s easy to get swept up in the latest design trends, but focusing too much on what’s currently popular can result in a space that quickly feels outdated. Renovations should ideally balance contemporary touches with classic elements to ensure longevity.

How to Avoid It:

  • Embrace Timeless Design: While incorporating trendy elements can be fun, focus on a foundation of timeless design that won’t easily go out of style. Classic colors, materials, and layouts tend to have a lasting appeal.

  • Mix Trends with Classics: Use trends in smaller, easily changeable elements like accessories or paint colors rather than major fixtures. This allows you to update your look without a full renovation when trends shift.

  • Personalize Thoughtfully: Make sure your renovation reflects your personal style and needs. A home that suits your tastes will always feel more comfortable and authentic, regardless of current trends.


6. The Coffee Budget Conundrum (Bonus Mistake!)

The Mistake: Okay, we know we promised just five mistakes, but here’s a cheeky bonus: the coffee budget! It turns out that renovations aren’t just about hammering nails and moving walls —there’s also the essential matter of keeping your builders properly caffeinated. Skipping this can turn a smooth project into a groggy, grumpy mess!

How to Avoid It:

  • Coffee Is Key: Make sure you’ve got a steady supply of coffee and snacks. Your builders will appreciate the gesture—and you’ll appreciate the speed at which your project progresses.

  • Sweeten the Deal: Every once in a while, throw in some doughnuts or cookies. It’s amazing what a little sugar can do for morale and productivity!



Renovating or extending your home is indeed an adventure filled with excitement and anticipation. While it might seem like a daunting journey, knowing how to navigate common pitfalls can transform your renovation experience from a roller coaster into a smooth ride. By understanding the necessary preliminaries, sticking to your plan, managing daily life disruptions, budgeting for finishing touches, and balancing trends with timeless design, you can set yourself up for success.


At Lows Design and Build, we're here to support you through every twist and turn of your renovation journey. From the initial planning stages to the final flourishes, our comprehensive approach ensures your project runs smoothly, and your vision becomes reality. Let’s make your dream home a reality together.

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