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Contractor and homeowner reviewing a quotation with Ashvic branding and checklist on avoiding overcharges
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How to Avoid Being Overcharged by Contractors — A QS’s Guide for Homeowners and First-Time Investors

Hiring a contractor/builder can feel overwhelming, especially if you’re a homeowner or new investor. You want quality work, fair pricing, and peace of mind, but without the right checks, you risk being overcharged or choosing someone who’s not fit for the job.

At Ashvic Construction, we help clients navigate this process with confidence, from planning stage to aftercare. Here’s how to protect your budget and vet contractors like a Quantity Surveyor would.

1. Don’t Just Compare Prices — Compare What’s Included

A cheap quote isn’t always a good quote. Many contractors submit lump sums without explaining what’s included, which leads to:

  • Hidden costs later, as they will look to increase the scope and mention items weren’t included for which competent contractor would allow for in their quote.
  • Disputes over scope, this can lead to unfinished works and in many cases certain type of builders walking offsite with payment already taken.
  • Poor workmanship, you can expect the same level of detail and time spent on your quote as they will spend on the works, so if no breakdown, no clarifications, exclusions or payment terms then you should know it was rushed.

What to do: Ask for a breakdown. A good contractor will be transparent and won’t be pushing for the job to start ASAP and wont submit the quote, then call you a second later saying let me know if my quote need to be reduced or tells you the other contractor has missed things, breakdown you can expect should include:

  • Labour and materials costs separate,
  • What’s included/excluded,
  • Assumptions made (e.g. access, finishes, timelines),

Tip, for finishes always confirm in writing what you are expecting, for things like lights, sockets, taps, either issue to the contractor free of charge so you know exactly what you are getting or ask the contractor to confirm what they have allowed for.

We help clients from early stages before they even get quotes back, we do this by working with You and/or designers to ensure the finishes results can be achieved within your budget and for investors this helps them understand where the money is best spent.

2. Vet Their Track Record — Not Just Their Website

Anyone can build a flashy website. What matters is:

  • Have they done similar projects? Request for portfolio with images to ensure they have worked on similar value projects and complexity.
  • Do they finish on time and on budget? This is a tricky one, as contactor can say pretty much anything they like.
  • How do they handle problems? This will help you to understand their experience and see how quick they can resolve an unexpected issue to ensure prelims are kept low and they finish on time.

So how can you vet them: Ask for:

  • Case studies or/and photos, ensure they tell you the initial budget and programme against what it actually took,
  • Request for references from past clients, don’t be afraid to ask for details to contact 1 or 2 clients, not all contractors will have this, so this is more to do with how they react, if they become defensive then be careful but on other hand if they say something like “we are currently working on this project so let me ask the client if they are happy for contact information to be shared”, this will clearly sets them apart,
  • Proof of insurance and accreditations (CHAS, Constructionline, etc.), the right insurance is a must have. Accreditation are bonce.

Get in touch with us if you are unsure.

3. Watch for “Too Good to Be True” Pricing

Some contractors underprice to win the job, then claw it back through:

  • Variations and extras
  • Delays and disputes
  • Cutting corners on quality

What to do: Get a QS or experienced estimator to sanity-check the pricing. We often spot:

  • Unrealistic labour rates
  • Missing items
  • Risky assumptions

We help you price the job properly — so you don’t pay more later.

4. Review the Contract Before You Commit

Many homeowners skip this step — and it costs them.

Key things to check:

  • Payment terms
  • Completion dates
  • Who supplies what
  • What happens if things go wrong

We review contracts for clients and highlight risks — so you’re protected from day one.

5. Ask How They Handle Communication and Changes

A good contractor will:

  • Keep you updated
  • Flag issues early
  • Document changes properly, written format, either email or WhatsApp/text (make sure to screenshot anything you see as red flag),

A bad one will:

  • Go silent
  • Make verbal promises
  • Surprise you with invoices and wants payment asap.

Final Thoughts

Choosing the right contractor isn’t just about price, it’s about trust, transparency, and professionalism, to help you reduce the risk and stress of uncertainty. As a QS-led consultancy, we help homeowners and first-time investors:

  • Vet contractors properly
  • Understand pricing and scope
  • Avoid costly mistakes
  • Protect their investment

Whether it’s a small renovation or a full development, we make sure you get value, not just a quote.

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