Compara cotizaciones antes de firmar un contrato de concreto
Comparacion de Cotizaciones de Contratistas de Concreto
Primero la respuesta: sube o ingresa tus cotizaciones de contratistas. Compara alcance, materiales, mano de obra, garantia y terminos de pago lado a lado.
Diferencia tipica entre cotizaciones
15–30% entre la mas alta y la mas baja
Una diferencia mayor puede indicar alcances diferentes, no solo precios distintos.
Elementos frecuentemente omitidos
Base de grava, refuerzo, acabado
Verifica que cada cotizacion incluya los mismos elementos antes de comparar precios.
Bid leveling workspace
Compare la oferta, no solo el precio
Use this concrete-specific worksheet to level three contractor bids by total price, price per square foot, price per cubic yard, included scope, missing scope, access risk, payment terms, and follow-up questions before you sign.
La oferta más baja no siempre es la mejor oferta nivelada.
Bid A is the lowest total at $6,400, while Bid B has the strongest written scope at 97/100.
Lowest total
$6,400
Bid A: Do not rank on price yet
Best written scope
97/100
Bid B: Complete mid bid
Critical scope checks
11
Prep, base, delivery, access, payment, warranty
| Oferta | Total | Precio normalizado | Puntuación del alcance | Decision |
|---|---|---|---|---|
Bid A Lowest lump sum 500 sq ft patio, 4 in slab, residential backyard access | $6,400 50% deposit noted | $13 / sq ft $941 / yd3 6.80 yd3 concrete | High scope risk - 100/100 3/11 scope items named. | Do not rank on price yet Lowest total, but not the safest leveled bid until missing scope is written. |
Bid B Complete mid bid 500 sq ft patio, 4 in slab, base and reinforcement named | $7,800 30% deposit noted | $16 / sq ft $1,147 / yd3 6.80 yd3 concrete | Lower follow-up risk - 12/100 11/11 scope items named. | Comparable after final checks Most comparable sample because scope, access, payment, and closeout are written. |
Bid C Premium access-heavy bid 500 sq ft patio, limited access, demo and haul-off included | $9,200 35% deposit noted | $18 / sq ft $1,353 / yd3 6.80 yd3 concrete | Lower follow-up risk - 29/100 10/11 scope items named. | Comparable after final checks Price needs context because at least one critical scope item is missing. |
Included scope matrix
| Elemento del alcance | Bid A | Bid B | Bid C |
|---|---|---|---|
Site prep and excavation scope | Missing | Included | Included |
Base depth and compaction scope | Missing | Included | Included |
Forms and layout scope | Included | Included | Included |
Rebar or wire mesh scope | Missing | Included | Missing |
Concrete delivery or supplier terms delivery | Included | Included | Included |
Pump, buggy, or truck access delivery | Missing | Included | Included |
Finish, curing, and control joints finish | Included | Included | Included |
Cleanup, washout, and haul-off closeout | Missing | Included | Included |
Deposit, draws, and payment terms contract | Missing | Included | Included |
Change-order rules and exclusions contract | Missing | Included | Included |
Warranty or workmanship note contract | Missing | Included | Included |
Questions before deposit
Download the worksheet
The export is a planning worksheet. Replace every example value with current contractor bids before making a hiring decision.
bid,style,total_usd,area_sq_ft,concrete_yd3,price_per_sq_ft,price_per_yd3,included_scope_count,missing_scope,completeness_score,risk_score,risk_label,decision,follow_up_questions
Bid A,Lowest lump sum,6400,500,6.8,12.8,941.18,3,"Site prep and excavation; Base depth and compaction; Rebar or wire mesh; Pump, buggy, or truck access; Cleanup, washout, and haul-off; Deposit, draws, and payment terms; Change-order rules and exclusions; Warranty or workmanship note",18,100,High scope risk,Do not rank on price yet,"Is base stone, compaction, and subgrade repair included?; Who pays if the truck cannot reach the pour?; What is excluded from the lump-sum price?; Ask whether site prep and excavation is included.; Ask whether base depth and compaction is included.; Ask whether rebar or wire mesh is included."
Bid B,Complete mid bid,7800,500,6.8,15.6,1147.06,11,,97,12,Lower follow-up risk,Comparable after final checks,Who handles permits or inspection if required?; What base depth is assumed after excavation?; How are weather delays and schedule changes handled?
Bid C,Premium access-heavy bid,9200,500,6.8,18.4,1352.94,10,Rebar or wire mesh,88,29,Lower follow-up risk,Comparable after final checks,Is rebar or wire mesh included in the premium access price?; What finish tolerance or finish defect policy is included?; Can the access allowance be separated from the concrete scope?; Ask whether rebar or wire mesh is included.Interactive workflow
Run the numbers, then save or export the project
Concrete bid signals to compare
A lower concrete bid can still be the worse deal if scope, access, or change-order rules are missing. Use these checks before you choose a contractor.
| Signal to check | What it means | Next step |
|---|---|---|
| Material-only wording | The bid may include concrete but skip excavation, gravel base, compaction, forms, reinforcement, control joints, curing, cleanup, or haul-away. | Ask the contractor to write what is included and excluded before comparing against another bid. |
| Different slab thickness or base depth | Two bids can look similar while assuming different concrete thickness, gravel depth, compaction, or reinforcement. | Use the volume and cost calculators to normalize quantity, then compare the written scope. |
| Delivery and access are vague | Short-load fees, wait time, pump, buggy, wheelbarrow distance, truck reach, and site access can change pour-day cost. | Run the pour planner and local cost tab before accepting the bid. |
| Payment terms are thin | Deposit size, draw schedule, change orders, cancellation fees, permits, inspection responsibility, and warranty language should be clear. | Record follow-up questions and keep a saved bid review before paying. |
| Cleanup or repair is not named | Forms removal, washout, lawn repair, surface protection, debris, and final cleanup can become dispute points. | Mark cleanup as missing scope until it is written into the bid. |
Related concrete planning tools
Move from a single calculation into a purchase, proposal, or pour-day decision with connected calculators and checklists.
Como comparo cotizaciones de contratistas de concreto?
Asegurate de que cada cotizacion incluya los mismos elementos: base de grava, encofrado, refuerzo, especificacion de mezcla, acabado y limpieza. Una cotizacion mas baja puede simplemente tener menos alcance.
Cuantas cotizaciones debo obtener para trabajo de concreto?
Al menos 3 cotizaciones de contratistas licenciados. Esto te da un rango de mercado y te protege contra precios inflados o propuestas incompletas.
Que debe incluir una cotizacion de concreto?
Dimensiones y espesor de la losa, especificacion de mezcla (psi), tipo de base (grava), refuerzo (varilla o malla), tipo de acabado, limpieza, garantia y terminos de pago.
Es normal que las cotizaciones varien mucho?
Una variacion del 15–30% es normal. Variaciones mayores generalmente indican diferentes alcances. Siempre pregunta que esta incluido — no solo el precio final.
Planning disclaimer
Esta herramienta es para comparacion de planificacion. Siempre verifica licencias, seguros y referencias de contratistas antes de contratar.