You’ve finally decided to start your construction project.

You contact a few contractors, explain what you want, and wait for the quotations to arrive.

Then the emails and WhatsApp messages start coming in.

One contractor quotes R180,000.

Another quotes R220,000.

Another quotes R275,000.

Now you’re asking yourself:

“Why are the prices so different?”

And more importantly:

“Which contractor should I choose?”

If you’re comparing building quotes for your home, don’t make the mistake of choosing the cheapest number immediately.

A construction quotation is more than a price.

It should tell you what the contractor plans to do, what materials and services are included, what isn’t included, how payments will work and what you can expect during the project.

In this guide, I’ll show you 12 things to check when comparing building quotes, so you can make a more informed decision before hiring a contractor.

Why Building Quotes Can Be So Different

It’s completely normal for different contractors to give you different prices.

The problem starts when you don’t understand why they are different.

For example, Contractor A may quote R200,000 while Contractor B quotes R240,000.

At first glance, Contractor A appears cheaper.

But what if Contractor A excluded painting?

What if electrical work isn’t included?

What if Contractor B has included better-quality materials?

What if one contractor has included more extensive preparation work?

Suddenly, the R40,000 difference doesn’t tell you much.

That’s why you need to compare the scope of work, not just the final amount.

1. Check That Every Contractor Has Quoted for the Same Work

This is probably the most important rule when comparing quotations.

You need to make sure you’re comparing the same project.

If you give one contractor detailed plans and another contractor only receives a verbal description, you may receive completely different quotations.

Before comparing prices, check that each contractor understands:

The size of the project
The building design
The number of rooms
Structural requirements
Plumbing requirements
Electrical requirements
Roofing
Windows and doors
Flooring
Painting
Kitchen requirements
Bathroom requirements
External work

The more clearly you define the project, the easier it becomes to compare quotations.

2. Look at the Scope of Work

Don’t skip straight to the final price.

Read the scope of work first.

The scope should explain what the contractor intends to do.

For a building project, this could include different stages such as:

Site preparation
Foundations
Brickwork
Roofing
Plumbing
Electrical installation
Plastering
Flooring
Painting
Doors
Windows
Kitchen installation
Bathroom installation

The exact scope will depend on your project.

If one quotation has a detailed scope and another simply says “building work”, you don’t have enough information to compare them properly.

3. Check What Materials Are Included

This is another area where homeowners can easily become confused.

Two contractors may both say:

“Materials included.”

But that doesn’t necessarily mean they are supplying the same materials.

For example, ask about:

Brick type
Cement
Roofing materials
Flooring
Tiles
Paint
Windows
Doors
Bathroom fittings
Kitchen materials

You don’t necessarily need the most expensive materials.

But you should know what you are getting.

If a contractor has priced using standard materials and another has priced using premium finishes, their quotations may naturally be different.

4. Check the Quality and Specification of Finishes

Your construction quotation should make it clear what level of finish you’re paying for where this is relevant.

Think about areas such as:

Flooring

Are you getting standard tiles, premium tiles or another flooring option?

Bathroom

What sanitaryware and fittings are included?

Kitchen

Are cabinets included? What type of countertops are being used?

Windows

What material and specification are included?

Doors

Are internal and external doors included?

Paint

What preparation and paint system is included?

These details can have a major effect on the final cost.

5. Check Whether Labour Is Included

Never assume labour is included just because you’re dealing with a construction company.

Ask.

Your quotation should make it clear whether labour is included and, where appropriate, what labour is covered.

Depending on the project, this can include workers involved in:

Brickwork
Plastering
Roofing
Plumbing
Electrical work
Tiling
Painting
Carpentry
Installation

If a quotation doesn’t clearly explain the labour component, ask the contractor before accepting it.

6. Check the Exclusions

This is one of the most important sections of a quotation.

An exclusion is something that isn’t included in the quoted price.

For example, a quotation might exclude:

Building plans
Professional fees
Certain materials
Municipal fees
Special finishes
Additional electrical work
Additional plumbing
External landscaping
Changes requested by the homeowner

Exclusions aren’t necessarily a problem.

The problem is not knowing about them.

Before accepting a quote, ask:

“What will I still need to pay for after accepting this quotation?”

That single question can prevent a lot of confusion.

7. Check the Payment Schedule

Your quotation should explain how payments will be made.

For a larger construction project, payments may be linked to agreed stages or milestones.

For example, the agreement may specify payments at different stages of the project.

The exact arrangement depends on the contractor and project.

What matters is that you understand:

How much is payable
When payment is due
What the payment relates to
What happens if the project changes

Be cautious if you are being pressured to make a large payment without a clear written agreement explaining the payment structure.

8. Check How Changes Will Be Handled

This is something many homeowners don’t think about until construction has already started.

Suppose you decide to change something.

You want:

A larger window
Different tiles
Another plug point
A bigger kitchen
An additional room
A different door

The change may affect the price.

That’s why your agreement should explain how changes to the original scope will be handled.

A good practice is to have significant changes agreed in writing before the additional work is carried out.

That way, you can understand the additional cost before saying yes.

9. Compare Project Timelines

Price isn’t the only thing that matters.

Ask each contractor:

“How long do you expect this project to take?”

Then ask what the timeline depends on.

Construction can be affected by things such as:

Weather
Material availability
Design changes
Site conditions
Delays outside the contractor’s control
Additional work
Approval processes

You shouldn’t expect a contractor to predict every possible delay.

However, you should have a reasonable understanding of the planned construction programme.

10. Check Who Will Manage the Project

This is especially important for larger construction projects.

Ask:

“Who will actually manage my project?”

You want to know who your main contact will be.

Ask:

Who supervises the workers?
Who coordinates suppliers?
Who monitors progress?
Who handles problems?
Who communicates with me?
Who manages different trades?

A construction project involves many moving parts.

Professional project management can help keep the different stages organised.

This is one of the reasons homeowners should look beyond the quotation price.

You’re not only paying for construction materials and labour.

You’re also choosing the company responsible for managing your project.

11. Check the Contractor’s Credentials and Previous Work

A quotation tells you what a contractor says they will do.

You should also investigate who you’re hiring.

Before making your decision, ask for relevant information about the contractor.

Depending on your project, you may want to check:

Business registration
NHBRC registration where applicable
Previous projects
Customer reviews
References
Experience with similar projects
Written contract
Warranty or workmanship terms

If you’re planning a major project, don’t be embarrassed to ask questions.

You’re making a significant investment.

You have every right to understand who you’re hiring.

12. Check the Warranty and Workmanship Terms

The final price isn’t the end of the relationship.

You should also ask:

“What happens after the project is completed?”

Ask the contractor whether they provide a workmanship warranty and what it covers.

Read the terms carefully.

A warranty may have conditions and exclusions, so don’t rely on a verbal promise.

At Promen Services, qualifying work is covered by a 6-month workmanship warranty, subject to our terms and conditions.

The important thing is to understand the warranty before you sign the agreement.

A Simple Building Quote Comparison Example

Let’s imagine you receive three quotations.

Item	Contractor A	Contractor B	Contractor C
Total price	R190,000	R215,000	R245,000
Labour	Included	Included	Included
Materials	Included	Included	Included
Electrical	Excluded	Included	Included
Plumbing	Included	Included	Included
Painting	Excluded	Included	Included
Flooring	Standard	Standard	Premium
Project management	Unclear	Included	Included
Warranty	Unclear	6 months	12 months
Written contract	Yes	Yes	Yes

If you only looked at the price, Contractor A would appear to be the obvious winner.

But once you look at what is actually included, the situation changes.

Contractor A may require additional spending before the project is complete.

This is exactly why you should never compare construction quotations based only on the total price.

What Does “Turnkey” Mean?

You may sometimes hear contractors use the term “turnkey.”

Generally, a turnkey construction arrangement refers to a project where the contractor takes responsibility for delivering the agreed project to a specified level of completion.

However, you should never assume that the word “turnkey” automatically means everything is included.

Ask the contractor:

“Exactly what does turnkey include in this quotation?”

Get the answer in writing.

The actual scope matters more than the label.

What If the Cheapest Quote Is Actually Good?

There is nothing wrong with choosing the cheapest contractor.

If the cheapest quotation is:

Detailed
Clear
Comparable
Properly scoped
Professionally presented
Based on suitable materials
Supported by a written agreement

then it may genuinely represent good value.

The problem isn’t choosing a cheap contractor.

The problem is choosing a cheap contractor without understanding why the quotation is cheaper.

Always investigate the difference.

What If the Most Expensive Quote Is Better?

The most expensive quotation isn’t automatically the best either.

A higher price does not necessarily mean higher quality.

You still need to ask:

What additional value am I getting?
What materials are included?
What services are included?
Is project management included?
Is the scope more comprehensive?
Are better finishes included?
Are there important exclusions?

Don’t assume:

Expensive = professional.

Instead:

Compare the details.

The 5 Questions I Would Ask Before Choosing a Contractor

If you’re currently comparing quotations, start with these five questions.

1. What exactly is included?

Don’t accept vague answers.

2. What isn’t included?

Ask for exclusions in writing.

3. What materials and specifications are being used?

Know what you’re paying for.

4. Who will manage my project?

Know who will be responsible for coordination.

5. What happens if something changes or goes wrong?

Understand the process before construction starts.

These questions can tell you a lot about how professionally a contractor approaches your project.

Don’t Compare Quotes Without Comparing Contracts

A quotation is important, but it isn’t the entire agreement.

Before starting construction, make sure you understand the contract.

The contract should clearly deal with important matters such as:

Scope
Price
Payment terms
Project duration
Changes
Responsibilities
Delays
Workmanship
Warranty
Dispute procedures

If you don’t understand something, ask.

And if the agreement is complicated or involves a significant amount of money, consider obtaining appropriate professional advice before signing.

How to Get Better Construction Quotes

You can also make the quotation process easier by giving contractors good information.

When requesting quotations, provide:

Building plans
Property location
Site photographs
Approximate floor area
Number of rooms
Desired finishes
Special requirements
Any existing structures
Your expected project scope

If every contractor receives the same information, their quotations are easier to compare.

This is one of the simplest things you can do to improve the quality of your comparison.

Why Homeowners Shouldn’t Rush the Decision

You might be excited to start your project.

That’s understandable.

You’ve been thinking about the new house, extension or renovation for months.

But don’t let excitement pressure you into choosing the first contractor who gives you a price.

Take time to:

Compare quotations
Ask questions
Check credentials
Review the contract
Understand exclusions
Check previous work
Understand payment terms
Think about the overall value

A few extra days spent checking your contractor can be much more valuable than saving a small amount on the initial quotation.

How Promen Services Approaches Quotations

At Promen Services, we understand that homeowners need more than just a number.

You need to understand what the project involves and what you are paying for.

Our approach is based on professional construction project management and communication with the homeowner.

We provide construction services including:

New construction
Building
Plastering
Painting
Maintenance
Construction project management

Promen Services is NHBRC registered.

For qualifying work, we provide a 6-month workmanship warranty, subject to our terms and conditions.

Our philosophy is straightforward:

We manage your construction projects professionally so you do not have to.

If you’re comparing contractors, you don’t have to make your decision based on price alone.

Give yourself the opportunity to understand your project first.

Ready to Compare Your Construction Options?

If you have plans for a building project in Johannesburg, Soweto, Roodepoort, Lenasia or surrounding areas, the next step is to get a clear understanding of the work required.

You can contact Promen Services and discuss your project.

When contacting us, it helps to provide:

Your location
Photos of the property
Building plans if available
A description of what you want to build
Any quotations you already have, where appropriate

The more information available, the easier it is to understand what your project requires.

Don’t choose a construction company because it gave you the lowest number.

Choose based on the scope, value, communication, professionalism and confidence you have in the contractor.

Your construction project is a major investment.

Take the time to compare properly.

Promen Services

We manage your construction projects professionally so you do not have to.

Frequently Asked Questions

How do I compare building quotes?

Start by checking whether each contractor has quoted for the same scope of work. Then compare materials, labour, finishes, exclusions, payment terms, project timelines, project management, warranties and contract terms.

Should I choose the cheapest building quote?

Not automatically. A low quotation may exclude important work or use different specifications. First find out why the quotation is cheaper and compare what each contractor is actually offering.

What should be included in a building quotation?

Depending on the project, a quotation may include labour, materials, construction activities, finishes, plumbing, electrical work, project management and other services. Always ask the contractor to clearly identify inclusions and exclusions.

Why are building quotes so different?

Contractors may use different materials, labour costs, specifications, project scopes and assumptions. The best way to understand the difference is to compare the details of each quotation.

Should I get three building quotes?

Getting multiple quotations can help you understand the available options and identify significant differences. The number of quotations is less important than making sure the quotations are based on comparable project information.

What are exclusions in a construction quotation?

Exclusions are items or services that aren’t included in the quoted price. Ask the contractor to identify exclusions clearly so you understand what additional costs may arise.

Should a construction quotation include a payment schedule?

For a significant project, the payment arrangements should be clearly documented in the agreement. Ask when payments are due and what each payment relates to.

What should I ask a contractor before signing?

Ask about the scope of work, materials, exclusions, payment terms, project timeline, project management, credentials, warranty and how changes will be handled.

Does Promen Services provide a workmanship warranty?

Promen Services provides a 6-month workmanship warranty on qualifying work, subject to the company’s terms and conditions.

Keep Learning Before You Build

Planning a construction project? Don’t make an expensive decision before you understand the process.

Explore our Knowledge Centre guides below and learn how to budget, compare contractors, avoid hidden costs and make smarter decisions before construction begins.

More Guides From Promen Services

How to Choose a Construction Company in Johannesburg — Learn what to look for before trusting a contractor with your property.
How Much Does Building a House Cost in Johannesburg in 2026? — Understand the major factors that can affect your construction budget.
How to Compare Building Quotes Before Choosing a Contractor — Learn how to compare quotations properly instead of simply choosing the cheapest price.
NHBRC Registration: What Homeowners Should Know — Understand why contractor registration matters when planning residential construction.
Should You Renovate or Rebuild? — Discover the key factors to consider before deciding whether to renovate your existing property or start again.
How Long Does a Building Project Take? — Understand what can affect your construction timeline and how to plan ahead.
10 Hidden Costs of Building a House Homeowners Often Forget — Discover the costs that can catch homeowners by surprise and learn how to prepare.
How to Choose Building Materials Without Overspending — Learn how to balance quality, durability and price when selecting materials.
Why Choosing the Right Building Contractor Matters More Than Choosing the Cheapest Quote — Find out why the lowest quotation isn’t always the best value.
15 Things to Do Before Hiring a Construction Company in Johannesburg — Use this guide before signing a contract or starting your project.

Before you build, know what you’re getting into.

Promen Services — We manage your construction projects professionally so you do not have to.