Building and renovation: how to buy materials well, with delivery
First an estimate, then the purchase
Building materials are bought in batches, and a mistake in the calculation is expensive: you either run short in the middle of the work or are left with too much. So start with an estimate and measurements. For many materials you add a margin for cutting and breakage, and it is best to ask the contractor or the seller how much.
The second thing is delivery. For sand, stone chips, bricks and concrete it can be a large part of the price, so compare the cost delivered to your gate.
What a project is made of
The shell of a house: bricks, concrete and blocks, ready-mixed concrete and mortar, steel sections and rebar, sand, stone aggregate and fines. The roof and warmth: roofing and gutters, insulation and waterproofing, heating boilers.
Windows, doors, fencing: windows, entrance and interior doors, fences. Finishing: dry mixes, tiles, paint, flooring, wallpaper, plasterboard. Services: plumbing, heating, ventilation and electrics have their own sections.
What to put in your request
- Material and grade — for example, fly ash bricks, river sand, 100 mm insulation.
- Quantity — pieces, m², m³, tonnes, pallets.
- Specifications — size, density, class, manufacturer, colour.
- Delivery address — the city or village, and truck access.
- Unloading — a crane truck, lifting to a floor, by hand.
- Timing — a single delivery or in stages to a schedule.
- Documents — a test certificate, a delivery note, a GST invoice.
- Budget — if you want to name one.
What affects the price
For most materials the price is set by the grade and class, the manufacturer, the quantity, the season and the distance. Sand, stone chips and concrete depend on logistics, while insulation, tiles and windows depend on the brand, thickness, profile and what is supplied. Bulk purchases often come out cheaper than retail, so it is better to put everything into one order.
The season matters too. Demand is higher in the dry months and prices of some materials go up, so buying just before or after the monsoon is worth considering if you have somewhere to store things.
How to compare offers
Compare the same parameters: grade, thickness, manufacturer, batch. Ask what is included: delivery, unloading, pallets (often charged as a deposit), installation, or a profile in the set. For windows and doors, check the profile, the number of chambers and the glass, the fittings, the installation and the warranty.
Ask for a quality certificate, especially for concrete, rebar and insulation. For concrete, state the class (for example, M20), the workability and the distance to the site. For loose materials, ask them to confirm how it is measured and to charge for what is actually in the truck, and for timber, check the moisture content.
Typical mistakes: comparing only the unit price without delivery, buying tiles from different batches (the shade may differ) and buying “with a reserve” without a calculation. On receipt, check the quantity and quality before signing the documents.
Also agree a delivery schedule. Materials that spoil from damp (dry mixes, cement, plasterboard) are best brought closer to the time of use and kept under cover, while heavy and bulky items are easier to deliver in one trip.
How it works on BlaBlaPrice
Instead of calling depots and yards, create one request with a list of materials and the address. It is checked, and you are told what is missing. Then suppliers in your region reply in the chat: what they offer, the price or what it depends on, delivery, timing. They see where their offer ranks and compete for your order, so the price often comes out better.
The site shows the best-value offer first, and reviews of the seller are visible alongside. Contacts stay hidden until you choose an offer; it is free for the buyer. More on the “How it works” page.
