How to Compare Building Quotes Properly

Include a clear project scope, floor plans, number of bedrooms and bathrooms, roof type, finishes level (economy, standard, premium), intended site access, and any approvals you already have. Also list provisional sums or prime cost items such as sanitaryware, kitchen units and electrical fittings so contractors price consistently.

Provisional sums are budget allowances for work not yet defined. Prime cost items are estimated prices for specific materials or fittings. Both are placeholders; if actual costs exceed these allowances you will pay the difference. Confirm installed allowances and the process for handling overruns in writing.

Two similar total prices can hide large differences. One quote may include plaster, waterproofing, or local authority fees while another omits them. Line-by-line comparison reveals gaps so you can normalise quotes for a fair comparison of labour, materials and subcontractor scope.

Our policy lets you request up to 3 building quotes, or up to 5 quote options where available. Independent contractors will handle site visits, detailed pricing, timelines and warranties. We don’t guarantee the maximum number of responses. It reads well alongside the method behind our prices.

Typical gaps include waterproofing to bathrooms and balconies, rainwater goods, boundary walls, temporary site set-up, disposal of spoil, electrical compliance certificates, and allowance for concealed drainage repairs. Ask contractors to list these items explicitly.

Check a contractor’s portfolio, request references, confirm CIDB or NHBRC registration where relevant, and inspect past jobs if possible. Ask for a written workmanship guarantee and clarify who will manage subcontractors and site supervision.

Scope, labour rates, material specifications, finish level, site access, local labour availability, and statutory approvals drive cost. Regional variations affect transport and delivery charges. Get the contractor to break down labour, materials and mark-up.

Create a checklist of fixed inclusions: foundations, slab, structure, roofing, insulation, plaster, skirtings, door sets, sanitaryware, kitchen units, electrical wiring and finishes. Ask each contractor to price exactly those items or to show detailed exclusions so you can adjust their totals.

A reliable final price typically follows a site visit. Contractors need to verify levels, soil conditions, access for plant, and existing services. Request a provisional estimate for budgeting, then obtain a firm quote after the visit.

Typical terms are an initial deposit to secure the contract, milestone payments linked to clear deliverables (foundations, roof on, plaster complete, practical completion), and a retention holdback released after defects liability. Avoid large upfront payments without contract safeguards.

Quote validity usually ranges from 30 to 90 days. Material prices can change quickly; ask for the validity period and whether allowances are fixed or subject to supplier price changes. Get confirmation of lead times for long-lead items.

Confirm municipal building plan approvals, topology and contour reports if required, electrical and plumbing service availability, and any servitudes or wayleaves. Also confirm who handles local authority submissions and associated fees.

Contractors list concealed provisional sums for unknowns such as rock excavation or concealed drainage. If actual work is more than the provisional sum, you pay the difference. Require itemised reporting and signed change orders before work proceeds.

Verify brand names, model numbers, GSM or thickness for products, paint systems, tile sizes and installation methods. Confirm who supplies and warranties appliances, fittings and finishes, and whether any substitutions need prior approval.

Question unusually low prices: ask for itemised breakdowns, confirm subcontractor qualifications, check for omitted items and assess workmanship guarantees. A low quote can mask low allowances or unlisted exclusions that raise final cost.

Yes. Mobilisation, temporary fencing, site offices, water supply and welfare facilities should be listed. If a contractor omits these, expect additional invoiced charges. Ask for these items to be included or priced separately for clarity.

A written contract or letter of agreement, detailed scope, payment schedule, defect liability period, warranties for materials and workmanship, and procedures for change orders. Keep copies of municipal approvals, engineering drawings and supplier quotes referenced in the contract.

Remote locations raise transport and labour costs and may extend lead times for materials. Urban areas may have higher labour rates but easier access to suppliers. Request location-specific adjustments and delivery estimates in the quote. This pairs naturally with building quote red flags.

Ask about exclusions, provisional sums, schedule of works, payment milestones, warranties, who manages subcontractors, rectification procedures, and what happens if unforeseen conditions arise. Get clear answers in writing before accepting an offer. More about how we work is in how we compile our cost data.