Contractor Bid Sheet: The Simple System That Protects Flip Margins

A contractor bid sheet is not a formality. It is one of the cheapest insurance policies a flipper can use. When bids are vague, margins bleed. When the scope is scattered across texts, photos, and verbal promises, the project starts with confusion and ends with change orders.

The investor who controls the bid process controls the rehab conversation. That does not mean beating contractors down until nobody wants to work with you. It means giving every contractor the same scope, the same assumptions, and the same line items so you can compare bids like an operator instead of gambling like a beginner.

This article builds on How to Build a Rehab Scope of Work Before You Make an Offer. The scope of work defines what needs to be done. The contractor bid sheet turns that scope into comparable numbers. Together, they are a core piece of the Fix & Flip System.

Why Verbal Contractor Bids Are Dangerous

A verbal bid feels fast. That is why new investors like it. The contractor walks the property, says, “Probably around fifty grand,” and the investor plugs $50,000 into the deal analysis. The problem is that “around fifty grand” does not tell you what is included, what is excluded, what materials are assumed, whether permits are included, who buys fixtures, whether cleanup is covered, or how change orders will be handled.

The more vague the bid, the easier it is for both sides to hear what they want. You think paint includes ceilings, trim, doors, closets, and touchups. The contractor thinks it means walls only. You think bathroom remodel includes plumbing fixtures. The contractor priced labor only. Nobody is necessarily lying. The bid was just too weak to protect the relationship.

DealCheck is useful for projecting flip profit, rehab costs, returns, and investment reports, and its pricing page states that every plan includes a house flipping calculator, investment return calculations, sales and rental comps, property reports, and comparison tools.[1] But after you analyze the deal, you still need contractor bids that support the inputs. A clean bid sheet is how you make the field match the spreadsheet.

What a Contractor Bid Sheet Should Include

A bid sheet is a standardized document you give to every contractor bidding the project. It should include the property address, investor contact information, bid due date, walkthrough date, required license or insurance expectations, project timeline, payment schedule expectations, material assumptions, scope categories, line-item pricing, exclusions, allowances, and signature lines.

The goal is not to create a 40-page legal document. The goal is to remove ambiguity before money is committed.

Bid Sheet Section	Purpose
Project summary	Identifies the property, strategy, expected start date, and target completion.
Bid instructions	Tells contractors how to price, when to submit, and what must be included.
Scope categories	Breaks the rehab into exterior, systems, kitchen, baths, flooring, paint, etc.
Line-item pricing	Makes bids comparable across contractors.
Allowances	Defines budget assumptions for materials not yet selected.
Exclusions	Forces contractors to state what is not included.
Timeline	Clarifies expected duration and major milestones.
Payment terms	Prevents payment confusion and protects cash flow.
Change-order process	Requires written approval before extra work begins.

A bid sheet turns “what do you think?” into “price this exact job.” That shift alone can save thousands.

Build the Bid Sheet From the Scope of Work

Do not let contractors create the scope for you. Contractors should help refine the scope, but the investor should control the project standard. Start with the rehab scope you built during due diligence, then convert each scope category into bid lines.

For example, “update kitchen” is not a bid line. A real bid sheet separates demo, cabinets, countertops, sink, faucet, disposal, backsplash, flooring, lighting, electrical, plumbing, appliances, paint, trim, and cleanup. If one contractor includes appliance installation and another does not, you need to see that difference before you choose.

Example Bid Sheet Structure

Category	Line Item	Notes or Allowance
Exterior	Roof repair or replacement	Include tear-off, materials, labor, disposal.
Exterior	Gutters, fascia, soffit	Specify linear feet if known.
Site	Landscaping and trash-out	Include haul-off and final cleanup.
Mechanical	HVAC service or replacement	Include permit if required.
Electrical	Panel, fixtures, outlets, code corrections	Clarify fixture allowance.
Plumbing	Water heater, supply lines, drains, fixtures	Clarify fixture allowance.
Kitchen	Demo, cabinets, counters, sink, faucet, lights	State finish level.
Bathrooms	Tub/shower, vanity, toilet, tile, fixtures	Separate each bath if needed.
Interior	Drywall, paint, trim, doors	Include ceilings, closets, and touchups.
Flooring	LVP, carpet, tile, subfloor repair	Specify material allowance and square footage.
Final	Punch list, cleaning, staging support	Include final jobsite cleanup.

This structure gives you a common language. The cleaner the bid sheet, the less room there is for “I didn’t price that.”

Use Allowances the Right Way

An allowance is a placeholder budget for a material or item that has not been selected yet. Allowances are useful, but only if they are clear. If you tell a contractor to include “lights,” one contractor might assume $40 builder-grade fixtures while another assumes $125 modern fixtures. Their bids will look different even if their labor pricing is similar.

Use allowances for cabinets, countertops, appliances, light fixtures, plumbing fixtures, tile, flooring, hardware, mirrors, and landscaping material. State whether the allowance includes materials only or materials plus labor. If you already know the product, include the brand, SKU, finish, and quantity.

Allowance Item	Weak Version	Strong Version
Flooring	“Install LVP.”	“Install LVP throughout living areas and bedrooms; material allowance $2.50/sf; include underlayment, transitions, and labor.”
Lighting	“Replace lights.”	“Fixture allowance $750 total for kitchen, dining, hall, bedrooms, baths, and exterior; labor priced separately or included.”
Appliances	“New appliances.”	“Stainless package allowance $2,800; include delivery, install, and haul-off of old units.”
Countertops	“Granite counters.”	“Level 1 granite or similar; include template, fabrication, install, sink cutout, and disposal.”

Allowances protect both sides. The contractor does not have to guess, and you do not get surprised.

Get Multiple Bids Without Wasting Everyone’s Time

Three bids is a solid target for most projects. You do not need ten. You need enough market feedback to identify outliers and understand cost reality. The key is to make the bid package easy to review.

Send the same scope, photos, measurements, property access instructions, bid due date, and questions to every contractor. If one contractor asks a question that affects pricing, share the clarification with the others. That keeps the process fair and comparable.

Be transparent about your timeline and decision process. Good contractors do not want to be used as free estimating machines for investors who will never hire them. If you want serious bids, act like a serious client.

How to Compare Bids

Do not automatically pick the lowest bid. The lowest number can be the best value, or it can be the least complete bid. Compare scope inclusion, timeline, communication, references, licensing, insurance, payment terms, availability, material assumptions, change-order process, and warranty expectations.

Comparison Factor	What to Ask
Total price	Does the total include labor, materials, permits, cleanup, and haul-off?
Completeness	Are all bid sheet lines priced or intentionally excluded?
Timeline	Can the contractor start and finish within your financing and resale timeline?
Assumptions	What material allowances and finish standards are included?
Payment structure	Is the deposit reasonable, and are draws tied to completed work?
Change orders	Must extra work be approved in writing before completion?
Proof	Can the contractor provide references, insurance, and relevant project photos?

A bid that is $8,000 cheaper but excludes permits, fixtures, cleanup, and punch work is not cheaper. It is incomplete.

Tie the Bid Sheet Back to Your Deal Analysis

Once bids come in, update your deal analysis immediately. Do not keep using your original rehab estimate if the market is telling you the work costs more. The numbers do not care about your first impression.

Use the Free Deal Analyzer or DealCheck to update rehab, holding costs, financing costs, projected resale value, target profit, and maximum offer. DealCheck’s platform supports flip analysis, cash flow projections, sales and rental comps, property reports, and side-by-side comparisons, which makes it useful when you are deciding which opportunities deserve time and capital.[1]

If the bid sheet pushes your rehab budget from $52,000 to $68,000, one of four things must happen. The offer comes down. The scope changes. The exit value goes up based on real comp support. Or you walk.

That is not pessimism. That is how you stay alive in flipping.

Protect Your Margin With Written Change Orders

Change orders are not evil. Unknown conditions happen. Termite damage hides behind drywall. Old plumbing fails. Electrical panels need more work than expected. The problem is not the change order. The problem is unmanaged change orders.

Your bid sheet should state that any additional work requires written approval before the work begins unless it is an emergency. The change order should include the reason, price, timeline impact, and whether it affects other trades.

Change-Order Rule	Why It Matters
Must be written	Prevents “you told me in the hallway” disputes.
Must include price	Protects budget tracking.
Must include schedule impact	Protects holding cost assumptions.
Must be approved before work	Keeps control with the investor.
Must reference scope line	Keeps the project organized.

If you are using bridge or hard money financing, timelines matter. Kiavi’s bridge loan materials describe short-term investor financing with 12-, 18-, and 24-month terms and interest-only options for eligible non-owner-occupied projects.[2] Whether you use Kiavi or another lender, delays are not just annoying. They are carrying costs.

Create a Payment Schedule That Matches Progress

New investors often overpay upfront because they are afraid to lose the contractor. That is a weak position. Good contractors deserve to be paid on time, but your draw structure should match completed work.

A typical structure may include a modest deposit, then progress draws tied to milestones such as demo completion, rough mechanical completion, drywall completion, cabinet and flooring installation, substantial completion, and final punch. The exact structure depends on the project and contractor, but the principle is the same: cash follows verified progress.

Do not pay the final draw until the punch list is complete, lien waivers are collected where appropriate, receipts or material documentation are provided if required, and the jobsite is cleaned. If permits were involved, confirm final inspections.

Red Flags in Contractor Bids

A bid that is too vague is a red flag. A contractor who refuses to put anything in writing is a red flag. A contractor who wants a large upfront payment before materials are ordered or work begins deserves scrutiny. A bid that ignores half the scope is a red flag. A contractor who cannot explain assumptions is a red flag.

So is the contractor who can start tomorrow when every other reputable contractor is booked. That does not always mean trouble, but it is worth asking why.

Your job is not to distrust everyone. Your job is to verify before you hand over control of your project.

A Simple Contractor Bid Sheet Template

Use this structure as a starting point and adapt it to your market, property type, and attorney-reviewed contract process.

Section	Details to Include
Property	Address, access instructions, lockbox, utilities status.
Investor	Name, phone, email, billing entity.
Project	Flip, BRRRR, rental turnover, or house hack renovation.
Bid Due Date	Date and time bids must be submitted.
Start Date	Expected start and required availability.
Completion Target	Desired project duration and milestone dates.
Scope Lines	Exterior, roof, structure, HVAC, electrical, plumbing, kitchen, baths, flooring, paint, cleanup.
Allowances	Fixtures, appliances, flooring, cabinets, counters, tile, hardware.
Exclusions	Anything not included in contractor price.
Payment Terms	Deposit, progress draws, final payment, lien release requirements.
Change Orders	Written approval required before additional work.
Signature	Contractor acknowledgment and bid validity period.

Keep it simple enough to use on every project. A template that sits unused in a folder does not protect anything.

Final Takeaway: Bids Are Not About Price. They Are About Control.

A contractor bid sheet gives you control over scope, price comparison, assumptions, timelines, and change orders. It helps you protect flip margins before the first hammer swings.

If you want to flip with discipline, do not start with a handshake and a hopeful rehab number. Start with a written scope, a standardized bid sheet, multiple comparable bids, and updated deal math. Then use the Fix & Flip System, the Deal Analyzer, and tools like DealCheck to decide whether the deal still works.

The best flippers are not the ones who find magic contractors. They are the ones who build systems that make good contractors easier to manage.

Author Bio

Greg Lee is a real estate investor based in Auburn, Alabama, building toward $1M in portfolio value through disciplined flipping, strategic BRRRR deals, and cash-flowing rentals. He documents the systems, tools, and lessons at dscrhousehacking.live/.

References

[1]: https://dealcheck.io/pricing/ "DealCheck — Plans, Pricing, and Features" [2]: https://www.kiavi.com/loans/bridge-loans "Kiavi — Bridge Loans for Real Estate Investors"

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