How to Compare Construction Quotations: Homeowner Guide

You asked several contractors to quote for your house.

The quotations arrive:

Contractor A: ₱4.8 million
Contractor B: ₱5.1 million
Contractor C: ₱5.5 million

Which contractor is the cheapest?

The obvious answer seems to be Contractor A.

But not necessarily.

Contractor A may have excluded waterproofing, windows, permits, cabinetry, or external works. Contractor B may have allowed cheaper finishes. Contractor C may have included items that the other two contractors expect you to supply separately.

This is one of the biggest mistakes homeowners can make when comparing construction quotations:

comparing the total price before comparing what is actually included in that price.

If you’re building or renovating a house in Cebu, this guide will show you how to compare contractor quotations more systematically—even if you are not an engineer or quantity surveyor.

The Most Important Rule: Compare Scope Before Price

Before looking at the total amount, ask one question:

Are these contractors pricing the same work?

A ₱5 million quotation and a ₱5.5 million quotation cannot be properly compared if they cover different scopes.

Consider this simplified example:

Contractor A may still be the best value—but you cannot determine that from the total price alone.

Your goal is to make the quotations as close to an apples-to-apples comparison as reasonably possible.

Here is how.

1. Check That Everyone Priced the Same Drawings

Before comparing anything else, make sure every contractor received the same information.

Check the drawing numbers and revisions used for pricing.

Depending on your project, the tender or quotation documents may include:

• • Architectural drawings

• • Structural drawings

• • Electrical drawings

• • Plumbing and sanitary drawings

• • Mechanical drawings

• • Specifications

• • Bill of Quantities

• • Schedules

• • Addenda or revised drawings

This matters because your design may have changed while contractors were preparing their quotations.

For example, Contractor A may have priced an earlier drawing showing five windows while Contractor B priced the revised drawing showing seven.

That price difference isn’t necessarily because one contractor is more expensive.

They may simply be pricing different quantities.

What to do

When requesting final quotations, send the same drawing package to every contractor and clearly identify the latest revisions.

If you issue revised drawings during the quotation period, send them to everyone being considered.

Then ask each contractor to confirm:

“Is your quotation based on the latest drawings and specifications provided?”

That simple question can prevent a lot of confusion.

2. Compare the Scope of Work

Next, examine what each contractor says is included.

Don’t jump to the total yet.

Break the project into major work sections.

For a residential project, these might include:

• • Preliminaries

• • Site preparation

• • Earthworks

• • Foundation

• • Structural concrete

• • Reinforcing steel

• • Masonry

• • Roofing

• • Waterproofing

• • Doors and windows

• • Ceiling

• • Floor finishes

• • Wall finishes

• • Painting

• • Plumbing and sanitary

• • Electrical

• • Mechanical works, where applicable

• • Cabinets and joinery

• • Fixtures

• • External works

• • Testing

• • Permits

• • Cleanup and turnover

Put the contractors side by side.

You may quickly discover that a quotation that appeared expensive simply contains more work.

Watch for vague descriptions

Be cautious with quotations containing descriptions such as:

“Complete house construction – ₱5,000,000”

or:

“All civil works included.”

What exactly does “complete” mean?

What exactly are “civil works”?

Ask for clarification.

A quotation should give you enough information to understand what the contractor believes they are responsible for providing.

3. Compare the Bill of Quantities and Quantities

If you have a Bill of Quantities (BOQ), use it as a comparison tool.

A BOQ organizes construction work into measurable items and quantities.

A simplified item might look like:

This allows you to investigate why two contractors have different prices.

Suppose:

Contractor A: 35 m³ concrete
Contractor B: 43 m³ concrete

Before comparing their concrete rates, ask why their quantities differ.

Possible reasons include:

• • Measurement differences

• • Different interpretation of drawings

• • Missing items

• • Different assumptions

• • Different drawing revisions

• • Calculation errors

A low total price caused by missing quantities is not necessarily a saving.

Do you need a BOQ?

For a substantial house construction project, having a sufficiently detailed cost breakdown can make contractor comparison much easier.

The level of detail will vary depending on the project and procurement method, but you should be able to understand the major components making up the contract price.

If the quotations use completely different formats, create your own summary comparison sheet by trade.

4. Compare Material Specifications

This is where many apparently similar quotations become completely different.

Imagine both contractors include:

Floor Tiles – Included

That sounds comparable.

But Contractor A may have allowed ₱500/m² while Contractor B has allowed ₱1,200/m².

The scope is technically included in both quotations, but the expected finish is different.

Look closely at major materials and specifications such as:

• • Concrete requirements

• • Reinforcing steel

• • Masonry materials

• • Roofing

• • Waterproofing

• • Tiles

• • Doors

• • Windows

• • Sanitary fixtures

• • Plumbing fixtures

• • Electrical fixtures

• • Ceiling

• • Paint systems

• • Cabinets

• • Countertops

Avoid relying only on words such as:

“Standard”

“Good quality”

“Premium”

“Equivalent”

These descriptions can mean different things to different people.

Where a specific brand, model, specification, or allowance matters to you, make it clear before finalizing the contract.

5. Identify Every Exclusion and Allowance

This may be the most important part of your comparison after scope.

Ask every contractor:

“Please identify everything that is excluded from your quotation.”

Then put those exclusions into your comparison sheet.

Common exclusions can vary widely but may include items such as:

• • Building permit fees

• • Professional fees

• • Soil investigation

• • Utility connections

• • Temporary electricity or water

• • Selected fixtures

• • Appliances

• • Cabinets

• • Air-conditioning

• • Landscaping

• • Gates and fences

• • External drainage

• • Site development

• • Specialty systems

Do not assume an item is included because it appears on the drawings.

Confirm it.

Pay attention to allowances

Some items may be included only as an allowance.

For example:

Floor tiles allowance: ₱700/m²

If you later choose tiles costing ₱1,400/m², the difference may become an additional cost.

That’s not necessarily a problem.

The important thing is that you understand the allowance before signing.

When comparing quotations, compare the allowance amounts as well.

6. Compare Unit Rates—But Only After Checking Quantities and Specifications

Homeowners often compare unit rates first.

For example:

Contractor A concrete rate: ₱9,000/m³

Contractor B concrete rate: ₱10,000/m³

Therefore Contractor A must be cheaper.

Not necessarily.

Before comparing rates, ask whether both contractors’ rates include the same things.

A rate might include different combinations of:

• • Materials

• • Labor

• • Equipment

• • Delivery

• • Wastage

• • Formwork

• • Accessories

• • Overhead

• • Profit

The specification may also be different.

Compare rates only after you understand the quantity, specification, and inclusions behind those rates.

7. Compare Payment Terms and Commercial Conditions

Two quotations with the same price can have very different financial implications.

Suppose both contractors quote:

₱5,000,000

Contractor A requests a very large amount at the start.

Contractor B uses an initial mobilization payment followed by progress billings tied to verified construction accomplishment.

The contract amount is identical, but your financial exposure and cash-flow requirements may be very different.

Check:

• • Initial payment or mobilization

• • Progress billing frequency

• • How accomplishment is measured

• • Payment due dates

• • Retention, where applicable

• • Final payment

• • Taxes and whether they are included where applicable

• • Bonding or insurance requirements where applicable

• • Warranty provisions

• • Construction duration

• • Variation procedure

Don’t compare only the construction price.

Compare the commercial terms behind the price.

Create an Apples-to-Apples Comparison Sheet

Once you understand the quotations, summarize them into one format.

You can create something like this:

You don’t need to be a quantity surveyor to create a useful high-level comparison.

The purpose is to identify differences.

What Is an Adjusted Comparison?

Suppose you receive:

Contractor A: ₱4.80M
Contractor B: ₱5.05M
Contractor C: ₱5.30M

Contractor A appears to be ₱500,000 cheaper than Contractor C.

But during your review, you identify:

Contractor A

• • Windows excluded: estimated ₱180,000

• • Waterproofing excluded: estimated ₱90,000

• • Kitchen cabinets excluded: estimated ₱250,000

That represents ₱520,000 of known scope differences.

For comparison purposes only:

₱4.80M + ₱520,000 = ₱5.32M

Now the picture looks very different.

This does not mean Contractor A’s official quotation suddenly becomes ₱5.32M.

It means you have normalized a known scope difference so you can make a more meaningful comparison.

This is why comparing only the original totals can be misleading.

Why the Lowest Quotation Isn’t Always the Cheapest

There is nothing wrong with choosing the lowest quotation.

If several qualified contractors are offering genuinely comparable scope, specifications, schedule, and commercial terms, price is naturally an important factor.

The problem is choosing the lowest price without understanding why it is lower.

A low quotation may result from:

• • Efficient procurement

• • Lower overhead

• • Better supplier relationships

• • More efficient construction methods

Those can be genuine advantages.

But it may also result from:

• • Missing quantities

• • Excluded scope

• • Lower specifications

• • Unrealistic allowances

• • Estimating errors

• • Different assumptions

Ask the contractor to explain significant price differences.

A professional contractor should be able to discuss their quotation.

Red Flags in a Construction Quotation

A quotation deserves closer review if you notice several of these:

• • Only a one-line lump-sum price

• • Scope is unclear

• • No clear exclusions

• • Material descriptions are extremely vague

• • Major works shown on the drawings are missing

• • Quantities differ significantly without explanation

• • Large allowances are unclear

• • Payment terms are heavily front-loaded without clear justification

• • Construction duration appears unrealistic

• • Additional works are to be “priced later” without an agreed procedure

• • Contractor refuses to clarify the quotation

• • Price is dramatically below competing quotations without an understandable reason

One red flag does not automatically mean you should reject a contractor.

It means you should ask questions.

Don’t Use Price per Square Meter to Compare Final Quotations

Construction cost per square meter is useful during early budgeting.

For example, if you are only starting to plan your project, a cost-per-square-meter range can help determine whether your overall budget is realistic.

But once you have detailed plans and actual contractor quotations, comparing contractors only using:

Contract Price ÷ Floor Area

is too simplistic.

Two houses with the same floor area can have very different:

• • Structural requirements

• • Number of bathrooms

• • Window areas

• • Ceiling heights

• • Roofing systems

• • Finishes

• • Fixtures

• • Site conditions

• • External works

Use cost per square meter as a benchmark, not as a substitute for reviewing the actual quotation.

If you’re still establishing your budget, read our guide on How Much Does It Cost to Build a House in Cebu?

Ask Contractors to Clarify Differences

After preparing your comparison, send questions back to each contractor.

For example:

“Please confirm whether waterproofing is included.”

“Your quotation shows 35 m³ of concrete while another estimate is significantly higher. Can you confirm your quantity?”

“Please clarify the tile allowance included in your price.”

“Are building permit fees included or excluded?”

“Does your electrical price include light fixtures?”

Give contractors an opportunity to clarify.

Then update your comparison.

This process is sometimes called quotation leveling or bid leveling—bringing different proposals onto a more comparable basis before making a commercial decision.

Don’t Secretly Change the Scope Between Contractors

Fair comparison works both ways.

If you ask Contractor A to price one specification and Contractor B to price something different, their totals won’t be comparable.

Try to provide all shortlisted contractors with the same:

• • Drawings

• • Specifications

• • Scope

• • BOQ, where available

• • Clarifications

• • Revisions

If you change something significant during the quotation process, inform everyone still being considered.

That produces better quotations and a fairer comparison.

Should You Prepare Your Own BOQ?

For a small repair, a detailed professional BOQ may not always be necessary.

For a major house construction project involving several million pesos, however, an independent cost estimate or BOQ can be extremely useful.

It gives contractors a common basis for pricing and makes differences easier to identify.

Depending on the project, this may be prepared by an appropriate construction professional such as a quantity surveyor, engineer, architect, or cost consultant within their professional scope and arrangement.

An independent estimate can also help you understand whether your budget is realistic before bidding the project.

What Happens After You Choose a Contractor?

Your quotation should not simply disappear once you select the contractor.

The agreed scope, drawings, specifications, price, and other relevant documents should be properly reflected or incorporated into your construction agreement.

CIAP’s guidance for private construction recognizes that the construction contract involves not only the signed agreement but also supporting contract documents such as specifications, drawings, conditions, and other bid documents.

For smaller private construction projects, the Construction Industry Authority of the Philippines also provides CIAP Simpleng Kontrata, a standardized contract resource intended to help owners and contractors clearly document matters such as scope, payment terms, project duration, and responsibilities.

A clear quotation is therefore only the beginning.

The final agreement should clearly establish what the contractor has actually agreed to build.

Questions to Ask Before Accepting a Quotation

Before accepting a contractor’s proposal, make sure you can answer:

• • Are all contractors pricing the same drawings?

• • Is the scope comparable?

• • Are major quantities reasonable?

• • Are material specifications comparable?

• • What is excluded?

• • What items are allowances?

• • Who supplies fixtures and selected materials?

• • Are taxes and applicable charges clearly addressed?

• • What is the payment schedule?

• • How will progress be measured?

• • How will variations be priced?

• • What is the construction duration?

• • What warranty or defect obligations apply?

• • What documents will form part of the final contract?

If you cannot answer several of these questions, you may not yet have enough information to select a contractor based on price.

Find and Compare Contractors in Cebu

If you are still looking for contractors to invite for quotation, CebuContractors.net helps homeowners and property owners discover construction professionals and suppliers serving Cebu.

Depending on your project, you can look for:

• • House contractors

• • General contractors

• • Residential contractors

• • Renovation contractors

• • Architects

• • Engineers

• • Electrical contractors

• • Plumbing contractors

• • Roofing contractors

• • Waterproofing contractors

• • Structural steel contractors

• • Construction suppliers

• • Other specialized construction services

After identifying potential contractors, request comparable quotations and perform your own due diligence before hiring.

You may also find these guides useful:

How to Choose a Contractor in Cebu: 10 Things to Check Before You Hire

How to Check if a Contractor Is PCAB Licensed in the Philippines

10 Questions to Ask a Contractor Before Building Your House in Cebu

Together, these checks can help you move from simply collecting prices to making a more informed contractor selection.

Frequently Asked Questions

How many contractor quotations should I get?

There is no fixed number suitable for every project. For a substantial residential project, obtaining quotations from several qualified contractors can provide useful comparison.

Quality matters more than quantity.

Three well-prepared quotations based on the same scope may be much more useful than ten vague quotations based on different assumptions.

Should I choose the lowest construction quotation?

Not automatically.

First determine whether the contractors are pricing comparable scope, quantities, specifications, schedule, and commercial terms.

If they are genuinely comparable and the lowest bidder is otherwise qualified and suitable for the project, the lower price can certainly be an advantage.

What should a construction quotation include?

The appropriate detail depends on the project, but you should be able to understand the scope, price, major work components, important specifications or allowances, inclusions, exclusions, payment terms, and other conditions relevant to the proposal.

For substantial projects, a more detailed cost breakdown or BOQ can make comparison easier.

What is the difference between a quotation and a BOQ?

A quotation is the contractor’s commercial proposal to perform the work for a stated price and under stated conditions.

A Bill of Quantities organizes measurable construction work into items, quantities, units and, when priced, corresponding rates and amounts.

A BOQ can therefore form part of or support a contractor’s quotation.

Why are contractor quotations so different?

Differences can result from many factors, including scope, quantities, material specifications, construction methods, labor and supplier pricing, overhead, profit, project duration, risk allowances, and exclusions.

A large price difference should therefore be investigated rather than automatically treated as overpricing or a bargain.

Can I ask a contractor to revise their quotation?

Yes. If you identify missing information, unclear scope, changed specifications, or other issues during comparison, ask the contractor to clarify or revise the proposal.

For final comparison, make sure you know which revision of each quotation you are evaluating.

Final Thoughts

When comparing construction quotations, the lowest number is not the first thing you should compare.

Start with the documents.

Then compare:

Scope → Quantities → Specifications → Exclusions → Rates → Payment Terms → Schedule → Price

Only after understanding those differences does the total amount become truly meaningful.

A good quotation comparison does not necessarily identify the cheapest contractor.

It helps you understand what each contractor is actually offering for the money you will pay.

For a major investment such as building a house, that distinction matters.

Take time to clarify differences before signing.

And if you’re looking for contractors and construction professionals serving Cebu, use CebuContractors.net to discover potential providers, request quotations, compare proposals, and independently verify contractors before making your final decision.

Disclaimer: This article provides general information for homeowners and property owners and does not constitute engineering, quantity surveying, architectural, legal, or financial advice. Construction quotations, contracts, procurement methods, and project requirements vary. For substantial projects or complex quotation comparisons, consider consulting an appropriately qualified construction professional.