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Quote Comparison
A practical guide to comparing home improvement quotes properly, including what to check, what may be missing and why the cheapest quote is not always the best value.
Comparing quotes can be one of the most confusing parts of a home improvement project. Two contractors may look as though they are pricing the same job, but the detail behind the numbers can be completely different.
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One quote may include materials, waste removal, making good, VAT, certification and a clear payment schedule. Another may exclude half of those items and still appear cheaper at first glance. This is why homeowners should not compare quotes by headline price alone.
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Whether you are planning an extension, loft conversion, garage conversion, kitchen, bathroom, windows, doors, boiler upgrade, electrical work, solar installation or wider refurbishment, quote comparison should be treated as a proper part of the decision-making process.
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Quick Answer
Quote comparison means checking whether two or more contractor quotes are pricing the same scope of work, materials, specification, timescale, exclusions, VAT position, payment terms and level of finish.
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The cheapest quote is not always the best quote. A low price may mean the contractor has missed items, allowed for lower-quality materials, excluded making good, left out certification, misunderstood the project or priced from incomplete information.
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Good quote comparison helps homeowners understand value, risk, scope and suitability before choosing who to instruct.
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Why is quote comparison important?
Quote comparison is important because a home improvement quote is only useful if you understand what it includes and what it excludes.
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Many homeowners ask three contractors for prices and then naturally look at the lowest number. That can be a mistake. The lowest number may not represent the same project.
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For example, one builder may include structural steel installation, skips, making good, drainage alterations and Building Control inspections. Another may only price the visible building work and leave several important items as exclusions.
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The same issue applies to smaller projects. A bathroom quote may or may not include tiling, sanitaryware, plumbing alterations, extractor fan, electrical certification, plastering, waste removal and decoration. A window quote may or may not include making good, trickle vents, certification, scaffolding or disposal of old frames.
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A quote should be judged on:
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what is included;
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what is excluded;
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what has been assumed;
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what materials are specified;
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whether labour and materials are both included;
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whether VAT is included;
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whether certification is included;
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whether making good is included;
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whether the timescale is realistic;
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whether the contractor understands the project;
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whether payment terms are sensible.
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A good quote gives clarity. A vague quote creates risk.
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Quotes need the same information
Contractors should ideally price from the same project information.
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For larger projects, that may include drawings, specifications, structural calculations, Building Regulations notes, site photos and a clear scope of work.
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If one contractor prices from detailed drawings and another prices from a short phone call, the quotes will not be comparable.
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This is especially important for:
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extensions;
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loft conversions;
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garage conversions;
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structural wall removals;
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full refurbishments;
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kitchen extensions;
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bathroom layout changes;
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window and door replacements;
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heating upgrades;
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electrical rewires;
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solar and battery installations.
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The clearer the information, the more reliable the quote is likely to be.
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TOP TIP
Before comparing prices, compare the scope. If two contractors are not pricing the same work, the cheaper quote may simply be the quote with the most missing items.
What should be checked in a contractor quote?
A proper quote should make it clear what the homeowner is buying.
It should not rely on vague wording such as “all works included” without any detail. That type of wording may sound reassuring, but it can create arguments later if the homeowner and contractor have different expectations.
Scope of work
The quote should describe the work clearly.
For example, if the project is a bathroom, does the quote include stripping out, plumbing alterations, new waste pipes, electrics, plastering, tiling, sanitaryware installation, extractor fan, flooring and decoration?
If the project is an extension, does the quote include foundations, drainage, structure, roof, insulation, windows, doors, electrics, heating, plastering, making good, skips and Building Control inspections?
A clear scope helps prevent misunderstandings.
Materials and specification
The quote should explain the quality or type of materials being allowed for.
This may include:
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bricks;
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roof tiles;
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insulation;
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windows and doors;
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sanitaryware;
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tiles;
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flooring;
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boilers;
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radiators;
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sockets and switches;
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lighting;
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kitchen units;
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worktops;
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paint finishes;
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ironmongery.
If a quote includes “supply and fit bathroom suite” but does not say what bathroom suite, the homeowner cannot judge whether the allowance is realistic.
Labour and materials
Some quotes include labour and materials. Others are labour-only. Some include basic materials but exclude finishing items.
This needs to be checked carefully.
A labour-only quote may look cheaper, but the homeowner may then need to supply materials, coordinate deliveries, deal with shortages and carry the risk of incorrect ordering.
VAT
VAT should be clearly stated.
A quote should say whether VAT is included, excluded or not applicable. This matters because a quote that appears cheaper may become much more expensive once VAT is added.
Homeowners should also be careful if VAT is not mentioned at all.
Exclusions
Exclusions are just as important as inclusions.
Common exclusions can include:
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planning fees;
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Building Control fees;
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structural engineer fees;
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party wall surveyor fees;
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skip hire;
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scaffolding;
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kitchen units;
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bathroom fittings;
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tiles;
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flooring;
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decorating;
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making good;
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utility connections;
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drainage changes;
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asbestos removal;
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unforeseen structural issues;
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certification;
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warranties;
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access equipment.
An exclusion is not automatically a problem, but the homeowner needs to know about it before choosing the contractor.
Provisional sums and allowances
Some quotes include provisional sums or allowances.
These are estimated figures for items that have not yet been fully specified. They can be useful, but they can also make the final price uncertain.
For example, a quote may include a provisional sum for tiles, kitchen units, steelwork, drainage or electrical fittings. If the real cost is higher, the homeowner pays more later.
Provisional sums should be realistic and clearly identified.
Timescale
The quote should give some idea of timescale.
This may include:
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expected start date;
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estimated duration;
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lead times;
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order times for materials;
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site working days;
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key stages;
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dependencies on approvals or other trades.
A very quick timescale may sound attractive, but it should be realistic.
Payment terms
Payment terms should be clear and sensible.
Homeowners should be cautious about paying too much upfront, especially before materials are ordered or work has started. Some deposit may be reasonable, but the payment schedule should broadly reflect progress.
A staged payment schedule is usually clearer than vague requests for money during the job.
IMPORTANT POINT
Do not accept a quote just because it is cheaper. A low quote with unclear scope, vague exclusions, no VAT detail, poor payment terms or unrealistic timescales can become more expensive than a higher quote that is properly explained.
How can homeowners compare quotes fairly?
The best way to compare quotes is to create a simple quote comparison schedule.
This does not need to be complicated. The aim is to put the main items side by side so that differences become obvious.
Compare like with like
Start by checking whether each contractor is pricing the same work.
Ask:
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Are they pricing from the same drawings?
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Are they using the same specification?
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Are they allowing for the same materials?
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Are they including the same level of finish?
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Are they including the same professional or certification items?
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Are they allowing for the same access and site conditions?
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Are they including VAT in the same way?
If the answer is no, the quotes need clarification before they can be compared.
Ask contractors to clarify unclear items
It is reasonable to ask a contractor to clarify a quote.
Useful questions include:
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Is VAT included?
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Is waste removal included?
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Is making good included?
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Are materials included?
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What specification have you allowed for?
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Is scaffolding included?
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Is certification included?
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Are Building Control inspections included?
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What is excluded?
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What assumptions have you made?
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What happens if hidden problems are found?
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How are variations priced?
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What warranty or guarantee is provided?
A good contractor should be willing to clarify their quote.
Look for missing items
Missing items are one of the biggest causes of budget problems.
A quote may appear cheaper because it has not allowed for something important. The homeowner may then pay for that item later as an extra.
Common missing items include:
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skips;
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scaffolding;
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decoration;
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making good;
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drainage;
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electrical certification;
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extractor fans;
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heating alterations;
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tiling;
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flooring;
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trims;
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ironmongery;
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Building Control fees;
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structural calculations;
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party wall matters;
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final cleaning.
A quote comparison process should flush these out before the contractor is appointed.
Consider the contractor, not just the quote
The quote is only one part of the decision.
Homeowners should also consider:
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communication;
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experience;
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suitability for the project size;
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quality of previous work;
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insurance;
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qualifications;
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availability;
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professionalism;
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references;
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warranty;
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how clearly the contractor explains the work.
The best quote is often the one that gives the best balance of price, clarity, experience and trust.
Keep records
All quote clarifications should be kept in writing.
If a contractor says something important by phone, it is sensible to confirm it by email. This helps avoid disputes later.
Written clarity is especially important for larger projects, staged payments, exclusions, variations and start dates.
Quote Comparison Checklist
Before choosing a contractor, check:
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whether all quotes are based on the same information;
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whether the scope of work is clearly described;
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whether labour and materials are included;
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whether VAT is included or excluded;
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whether the quote lists exclusions;
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whether provisional sums are realistic;
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whether making good is included;
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whether waste removal is included;
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whether scaffolding or access equipment is included;
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whether certification is included where required;
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whether professional fees are included or separate;
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whether the start date and duration are realistic;
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whether the payment terms are fair;
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whether the contractor has suitable experience;
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whether the contractor is insured;
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whether warranties or guarantees are clear;
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whether variations will be priced before extra work is carried out;
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whether you understand what could increase the final cost.
Frequently Asked Questions About Quote Comparison
How many quotes should I get for a home improvement project?
Many homeowners try to obtain two or three quotes. The important thing is that the quotes are based on the same information, otherwise they will be difficult to compare properly.
Should I choose the cheapest quote?
Not automatically. The cheapest quote may be good value, but it may also be missing important items or based on a lower specification. Always compare the scope, exclusions, VAT, materials and payment terms before deciding.
Why are builder quotes so different?
Builder quotes can differ because contractors make different assumptions, include different materials, allow different timescales, use different labour rates or exclude different parts of the work.
What does “provisional sum” mean in a quote?
A provisional sum is an estimated allowance for work or materials that have not been fully specified. The final cost may be higher or lower once the item is confirmed.
What does “PC sum” mean?
A prime cost sum, often called a PC sum, is an allowance for a supply item such as tiles, sanitaryware, kitchen units or fittings. If the homeowner chooses more expensive items, the final cost increases.
Should a quote include VAT?
The quote should clearly state whether VAT is included, excluded or not applicable. If VAT is not mentioned, the homeowner should ask before accepting the quote.
Should making good be included?
Making good should be clearly stated. Some contractors include plaster repairs, trims and basic making good. Others exclude decoration or only make good to a rough standard. This should be clarified.
What should I do if a quote is vague?
Ask the contractor to clarify the scope, materials, exclusions, VAT, payment terms and assumptions in writing. A vague quote can create problems later.
Can APN Home help compare quotes?
APN Home can help homeowners think through what to look for when comparing quotes and whether the quotes appear to be based on the same scope. Where appropriate, homeowners may also need professional advice from a designer, surveyor, engineer or project adviser.
Do I need drawings before getting quotes?
For larger projects such as extensions, loft conversions, garage conversions and structural alterations, drawings and technical information usually help contractors price more accurately. For smaller works, photos, measurements and a clear brief may be enough to start.
What is a variation?
A variation is a change to the agreed work, specification or scope after the quote has been accepted. Variations should be priced and agreed in writing before the extra work is carried out.
What is the biggest quote comparison mistake?
The biggest mistake is comparing headline prices without checking what each contractor has included or excluded. A cheaper quote may not be cheaper once missing items are added later.
Need Help Comparing Quotes?
APN Home helps homeowners understand the type of support they may need for home improvement projects, including extensions, loft conversions, kitchens, bathrooms, windows, doors, heating, electrical work, solar, insulation and wider refurbishments.
If you have received quotes and are not sure how to compare them, or if you are about to speak with contractors and want to avoid confusion, it is worth getting the scope and project information clear first.
Tell us about your project and APN Home can help you understand the next sensible step.




