Estimating & Takeoff Guide for Commercial Subcontractors
A field-tested reference for specialty trade subs bidding commercial TI, ground-up, and public works in the Bay Area and beyond. This is not theory — it is the process that keeps your doors open and your crews working.
Table of Contents
- How to Read Plans and Specs
- Quantity Takeoff Methods
- Pricing Your Estimate
- Bid Day Strategy
- Dealing with Addenda
- Estimating TI (Tenant Improvement) Work
- Value Engineering
- Post-Bid Analysis
How to Read Plans and Specs
Before you measure a single linear foot, you need to understand what the documents are telling you. Misreading plans is the fastest way to leave money on the table — or worse, leave scope out of your bid.
Plan Sheet Order
Construction drawings follow a standard sequence. Know what you are looking at:
| Prefix | Discipline | What to Look For |
|---|---|---|
| G | General | Cover sheet, drawing index, abbreviations, general notes, code summary |
| C | Civil | Site plan, grading, utilities — usually not your scope, but check access and staging |
| L | Landscape | Hardscape/softscape — affects sitework trades |
| A | Architectural | Floor plans, elevations, sections, details, finish schedules, door/window schedules |
| S | Structural | Foundations, framing plans, details — critical if you touch anything structural |
| M | Mechanical | HVAC plans, duct layouts, equipment schedules |
| P | Plumbing | Piping, fixtures, risers |
| E | Electrical | Power, lighting, panel schedules, one-lines |
| T | Telecom/Low Voltage | Data, fire alarm, security |
The cover sheet (G-001 or similar) lists every drawing in the set, the project team, applicable codes, and general notes that override everything else. Read it first, every time.
Understanding CSI Spec Divisions
Specifications are organized by CSI MasterFormat. Know the divisions that affect your trade:
- Division 01 — General Requirements. Read this every time. It covers submittals, quality assurance, temporary facilities, cleaning, and closeout. Division 01 can add scope you did not expect.
- Divisions 02–14 — Sitework through Conveying Equipment. Most subcontractor scopes fall here.
- Divisions 21–28 — Fire suppression, plumbing, HVAC, electrical. MEP trades live here.
- Divisions 31–35 — Earthwork, exterior improvements, utilities.
How to find your scope in the specs:
- Check the drawing index and spec table of contents for your CSI divisions.
- Read Division 01 in full — especially sections on submittals, substitutions, and quality requirements.
- Read every spec section even tangentially related to your trade. If you install drywall, read the painting spec too — the finish level specified (Level 3 vs Level 5) changes your scope.
- Look for "related sections" references within your spec sections. They will point to scope you might miss.
Reading Across Disciplines
Your scope is rarely contained on a single sheet type. A mechanical sub needs to check:
- Architectural for ceiling heights, soffits, and finish ceilings that affect duct routing
- Structural for beam depths and penetration restrictions
- Electrical for power to your equipment
- Plumbing for conflicts in ceiling space
An electrical sub needs to check architectural reflected ceiling plans for fixture locations, mechanical sheets for equipment requiring power, and plumbing sheets for electric water heaters.
If you price your work from only your sheets, you will miss scope. Cross-reference at least three disciplines for every bid.
Scale and Measurement
- Verify the scale on every sheet. Most architectural plans are 1/4" = 1'-0" or 1/8" = 1'-0" for floor plans, but details can be 1-1/2" = 1'-0" or full scale.
- If plans say "Do Not Scale" — they mean it. Use the dimensions given. When dimensions conflict with scale, ask an RFI.
- For digital takeoff, calibrate your scale tool against a known dimension on each page before measuring. Different sheets in the same set sometimes have different scales or were printed at different sizes.
Finding Spec Requirements That Affect Your Price
Hidden costs live in the specs. Watch for:
- Testing and inspection requirements — Who pays for the testing lab? (Usually the owner, but not always for re-tests.)
- Mock-up requirements — A full-scale mock-up of an exterior wall can cost $5,000–$25,000 to a curtain wall sub.
- LEED/sustainability requirements — Material documentation, VOC compliance, recycled content tracking.
- Prevailing wage requirements — Bay Area public work means DIR registration and certified payroll. This adds 25–40% to your labor costs compared to private work.
- Liquidated damages — Not your direct problem usually, but GCs pass schedule pressure downhill.
Quantity Takeoff Methods
The takeoff is the backbone of your estimate. Get quantities wrong and nothing downstream can fix it.
Manual vs Digital Takeoff
| Factor | Manual (Paper + Scale) | Digital (On-Screen) |
|---|---|---|
| Speed | Slow — 2-3x longer | Fast — measure, click, done |
| Accuracy | Depends on the estimator | Consistent once calibrated |
| Documentation | Hard to recreate | Saved, auditable, shareable |
| Cost | Scale ruler + highlighters | Software license $100–$300/month |
| Best For | Small jobs, quick checks | Any job over $50K |
Bottom line: If you are still doing takeoffs with a paper scale and a highlighter, you are leaving money on the table. The time savings from digital takeoff pays for the software within a month.
Digital Takeoff Tools
| Tool | Strengths | Typical Cost |
|---|---|---|
| Bluebeam Revu | Industry standard for markups and basic takeoff, great for PDF collaboration | ~$240/year |
| PlanSwift | Purpose-built for takeoff, drag-and-drop assemblies, integrates with Excel | ~$200/month |
| On-Screen Takeoff (OST) | Mature platform, strong in heavy civil and concrete, pairs with Quick Bid | ~$200/month |
| STACK | Cloud-based, good for distributed teams, pre-built assemblies by trade | ~$200–$500/month |
Every estimator has a preference. The best tool is the one your team actually uses consistently. Do not bounce between tools — pick one, build your assemblies, and train your people.
Measurement Types by Trade
| Trade | Primary Measurement | Secondary |
|---|---|---|
| Concrete | Volume (CY), area (SF) for flatwork, linear feet for curb/edge | Count (footings, piers) |
| Structural Steel | Weight (tons), count (pieces) | Linear feet (handrail, misc metals) |
| Framing/Drywall | Area (SF) of wall and ceiling | Linear feet (soffits, bulkheads), count (doors, openings) |
| Painting | Area (SF) | Linear feet (trim), count (doors) |
| Flooring | Area (SF) | Linear feet (base, transitions) |
| Mechanical/HVAC | Linear feet (duct, pipe), count (fittings, equipment) | CFM (airflow for sizing) |
| Electrical | Count (devices, fixtures), linear feet (conduit, wire) | Amperage (panel/service sizing) |
| Plumbing | Count (fixtures), linear feet (pipe) | Fixture units (for sizing) |
| Fire Protection | Count (heads), linear feet (pipe) | Area (SF) for density calculations |
| Roofing | Area (squares = 100 SF) | Linear feet (flashing, edge metal) |
Waste Factors
Every trade has waste. If you are not including waste factors, you are underbidding.
| Material | Typical Waste Factor | Notes |
|---|---|---|
| Drywall | 8–12% | Higher for cut-up areas, soffits, and radius walls |
| Framing lumber/studs | 5–8% | Lower for repetitive layouts |
| Concrete | 5–8% | Higher for pump pours and small pours |
| Conduit/wire | 10–15% | Longer runs = more waste at terminations |
| Duct (sheet metal) | 10–15% | Custom fittings drive waste up |
| Pipe (all types) | 8–12% | Include fittings and testing waste |
| Flooring (carpet tile) | 5–8% | Pattern matching adds waste |
| Flooring (LVT/VCT) | 8–10% | Diagonal patterns = 15%+ |
| Paint | 5–10% | Depends on surface texture |
| Acoustical ceiling tile | 5–10% | Higher for rooms with irregular shapes |
| Rebar | 5–10% | Lap splices consume steel |
Organizing Your Takeoff
Structure your takeoff so anyone can pick it up and understand it:
- Break it down by area/floor/zone — Do not lump everything together. "Level 2 East Wing" is traceable; "drywall" is not.
- Match the GC's breakdown — If the GC gives you a cost breakdown structure, follow it. This makes change orders easier later.
- Separate base bid from alternates — Never mix alternate scope into your base bid quantities.
- List exclusions explicitly — What you did NOT include is as important as what you did.
- Note assumptions — "Assumed standard 5/8" Type X throughout per A5.1 note 3" — this protects you when there is a dispute.
Common Takeoff Pitfalls
- Forgetting the backside — You measured the drywall on one side of the wall. There are two sides.
- Missing interior elevations — The floor plan shows a simple room. The interior elevations show a 42" tile wainscot with a decorative border. That is a different price.
- Not checking the reflected ceiling plan — Soffits, bulkheads, and ceiling height changes hide here. Mechanical subs: your duct routing lives and dies by the RCP.
- Ignoring the detail sheets — The plan shows a simple parapet. Detail 5/A8.3 shows it is a complex assembly with three layers of flashing, blocking, and a custom cap.
- Scaling from an unscaled PDF — If the PDF was not printed at 100%, every measurement is wrong. Always calibrate.
- Double-counting at scope boundaries — If you are doing both drywall and acoustical ceilings, make sure you are not counting the ceiling/wall intersection twice.
Pricing Your Estimate
Quantities mean nothing without accurate pricing. This is where experience and discipline separate the winners from the survivors.
Labor Productivity Rates
Labor is usually 40–60% of a subcontractor's bid. Get it wrong and you are underwater.
| Trade/Task | Typical Production Rate | Unit |
|---|---|---|
| Metal stud framing (interior walls) | 160–220 SF/day per carpenter | Per worker |
| Drywall hanging | 200–350 SF/day per hanger | Depends on height, lifts |
| Drywall taping (Level 4) | 300–450 SF/day per finisher | Level 5 = 60% of this rate |
| Acoustical ceiling grid + tile | 150–250 SF/day per installer | Open area vs cut-up rooms |
| Conduit (3/4" EMT) | 100–150 LF/day per electrician | Exposed vs concealed |
| Wire pulling (12 AWG) | 500–800 LF/day per puller | Depends on pull length and bends |
| Copper pipe (3/4") | 50–80 LF/day per plumber | Solder vs press fittings |
| Sheet metal duct (rectangular) | 80–120 LF/day per installer | Height and access dependent |
| Painting (walls, brush/roll) | 400–600 SF/day per painter | Spray = 2-3x this rate |
| Concrete forming (walls) | 80–120 SF/day per carpenter | Gang forms faster |
| Rebar placement | 1,000–1,500 lbs/day per ironworker | Slab vs wall vs column |
Production rates vary wildly by project conditions. A 10th-floor tenant improvement in a downtown San Francisco high-rise with freight elevator restrictions is not the same as a ground-level warehouse in Milpitas. Adjust your rates for the actual conditions.
Factors that reduce productivity (apply multipliers):
| Condition | Productivity Hit |
|---|---|
| Work above 10 feet (lifts/scaffolding) | 15–30% slower |
| Occupied building / phased work | 10–25% slower |
| Night/weekend shifts | 10–20% slower (plus shift differential) |
| Prevailing wage project (additional paperwork) | 3–5% overhead increase |
| High-security facility (badging, escorts) | 10–20% slower |
| Seismic bracing requirements | 15–25% added labor |
| LEED documentation requirements | 3–5% overhead increase |
Material Pricing
- Get real quotes. Do not use last month's prices on steel or copper. Material prices in the Bay Area fluctuate. Call your suppliers for current pricing on every bid over $100K.
- Include escalation. If the project does not start for 6 months, add a material escalation contingency. 3–5% is reasonable in normal markets; during volatile periods, you may need 8–12% or a material escalation clause.
- Buy out early. If you win, lock in material prices within two weeks. Suppliers will not hold quotes forever.
- Watch lead times. Switchgear is running 20–30 weeks. Custom air handling units: 16–24 weeks. Structural steel: 10–16 weeks. If lead times blow the schedule, the GC will lean on you.
- Bay Area tax rate. Currently 9.25–10.75% depending on jurisdiction. Santa Clara County is different from San Francisco. Get the right rate for the job site location.
Equipment Costs
Include everything that rolls, lifts, or runs on fuel:
- Scissor lifts — $800–$1,500/week rental in the Bay Area
- Boom lifts — $1,500–$3,500/week depending on reach
- Scaffolding — $2–$5/SF/month, plus erection/dismantle labor
- Concrete pumps — $1,500–$3,000 per pour for truck-mounted; line pumps $800–$1,200
- Generators — $500–$1,500/week; needed on sites without temp power
Every piece of equipment needs to get to the site and back. Delivery charges in the Bay Area add up fast — $200–$500 per delivery depending on distance and size.
Overhead Allocation
Your estimate needs to carry its share of overhead. Common methods:
- Percentage markup — Apply a flat percentage (8–15%) to direct costs. Simple but blunt.
- Allocated overhead — Divide your annual overhead by projected revenue and apply per job. More accurate.
- Job-specific overhead — Some costs are specific to the job (project manager time, project-specific insurance, travel). Price them directly.
Typical overhead items to account for:
- Estimating costs (your time is not free — winning 1 in 5 bids means each win carries the cost of 5 estimates)
- Project management
- General liability and workers' comp insurance
- Vehicle costs
- Office/shop rent
- Accounting and admin
- Software licenses
- Safety program costs
Profit Margin Strategy
There is no single right margin. Consider:
| Scenario | Typical Margin Range |
|---|---|
| Competitive hard bid, public work | 5–10% |
| Competitive hard bid, private commercial | 8–15% |
| Negotiated/relationship work | 12–20% |
| Specialized/sole-source scope | 15–25% |
| High-risk project or difficult owner | 15–25% (or walk) |
| T&M / cost-plus work | Agreed markup, typically 10–15% on labor, 10% on material |
Ask yourself: What is the risk? What is the competition? How hungry are we? What is our backlog? A company with six months of backlog can afford to be selective. A company watching crews sit at the yard cannot.
Bid Day Strategy
Bid day is controlled chaos. The subs who win consistently are the ones who manage the process, not just the numbers.
Timeline Management
| When | What to Do |
|---|---|
| 2 weeks before bid | Complete takeoff, identify scope questions, send RFIs |
| 1 week before bid | Material quotes confirmed, labor rates finalized, first draft of bid assembled |
| 2–3 days before bid | Review bid form requirements, confirm bid bond (if required), check all addenda received |
| Day before bid | Final review of quantities, check for last-minute addenda, confirm who is covering which GC |
| Bid morning | Plug in final sub-tier quotes, update material numbers, do final math check |
| Last 2 hours | Final scope check, apply margin, prepare bid submissions |
| Last 30 minutes | Submit to GCs, confirm receipt |
Bid Form Requirements
Read the bid form before bid day. Not on bid day. Common requirements you can miss:
- Bid bond — Typically 10% of the bid amount for public work. Your bonding company needs 48–72 hours minimum notice.
- Alternates — Price each one separately. If the form asks for 6 alternates and you only price 4, your bid may be rejected.
- Unit prices — GCs and owners use these for change orders. Price them realistically, not at giveaway rates.
- Addenda acknowledgment — List every addendum number on the bid form. Missing one can disqualify you on public work.
- Inclusions and exclusions — List them clearly. "Includes all Division 09 work per plans and specs" is too vague. "Includes drywall, ACT, painting per Addendum 3, excludes FRP and tile" is specific.
- Schedule of values — Some GCs want this with your bid. Have a rough SOV ready.
Managing Sub-Tier Quotes
If you carry sub-tier subs (e.g., a drywall sub carrying insulation, or a mechanical sub carrying controls):
- Get at least three quotes per scope when possible.
- Confirm every phone quote in writing — even a text message counts.
- On bid day, sub-tier subs will call with lower numbers in the last hour. Verify the scope before plugging in a lower number. A low number with exclusions is not a low number.
- Keep a bid log — who quoted, what amount, what is included/excluded.
Checking Your Math
Before you hit send:
- Does the total make sense? Divide your total by the building SF. Does the per-SF cost align with your experience? If you typically run $8–$12/SF for drywall on office TI and your number comes out at $4/SF, something is missing.
- Cross-check labor hours. Divide total labor dollars by your burdened rate. Do the total crew-days make sense for the project duration?
- Verify unit costs. Pull three or four major line items and check $/SF or $/LF against your historical data.
- Did you include everything? Run through this quick list: mobilization, layout, protection, temporary facilities, cleanup, punch list, warranty, as-builts, O&Ms, closeout.
Who Reviews the Bid
Never let the estimator be the only set of eyes on a bid. Best practice:
- Estimator builds the bid
- Senior estimator or ops manager reviews quantities and pricing
- Project manager reviews scope and schedule assumptions
- Owner/principal reviews margin and risk
On smaller companies, you might be wearing three of those hats. At minimum, have one other person look at the number before it goes out.
Dealing with Addenda
Addenda are inevitable. How you handle them separates professionals from amateurs.
Tracking Addenda
- Check the plan room and GC portals daily once a bid is on your desk. BuildingConnected, iSqFt, PlanHub — wherever the bid came from, check it.
- Log every addendum with its date, number, and a summary of what changed for your scope.
- Re-download the full set if addenda include revised sheets. Do not work from a mixed set of original and revised drawings.
Pricing Addenda Changes
- Add or deduct? Read the addendum carefully. Sometimes what looks like added scope is actually a scope reduction in disguise (e.g., deleting a room but adding a higher-spec finish to the remaining rooms).
- Track your time. If an addendum requires you to redo significant portions of your takeoff, note it. This is part of your estimating cost.
- Adjust your base bid. Do not submit the base bid and then a separate addenda delta. Incorporate addenda into your number and note on the bid form that all addenda through Addendum X are included.
Late Addenda
Addenda issued 24–48 hours before bid are the most dangerous.
- Read immediately. Even if it is 50 pages, skim it for your scope within the hour.
- Ask for a bid extension if the addendum is substantial. GCs can push owners for more time, especially on private work.
- On public work, late addenda may be grounds for a formal protest if they substantially change the scope and no time extension is granted. In California, public agencies are generally expected to provide reasonable time to evaluate addenda.
- If you cannot fully price a late addendum, include an allowance or a qualification. "Addendum 4 received less than 24 hours before bid — pricing includes an estimated allowance of $X for Addendum 4 changes. Final pricing to be confirmed within 48 hours."
On public work, failing to acknowledge an addendum on your bid form is one of the most common reasons bids are thrown out. Check the bid form twice.
Estimating TI (Tenant Improvement) Work
TI work is the bread and butter of many Bay Area subcontractors. It has its own estimating challenges that differ from ground-up construction.
Site Visits Are Non-Negotiable
Never bid a TI project without visiting the space. Plans for TI work are notoriously incomplete. You need to see:
- Existing conditions — What is behind the walls and above the ceiling? Is the existing framing metal stud or wood? Is there asbestos? Lead paint? Plaster instead of drywall?
- Access — Is there a freight elevator? What are the building hours for material deliveries? Is there a loading dock, or are you hand-carrying drywall through a lobby?
- Ceiling space — How congested is the plenum? Are there existing utilities that need to be relocated?
- Floor conditions — Is the existing slab level? Does it need prep before your flooring goes down?
- Building rules — Many Class A office buildings in SF and the Peninsula have strict rules about noise hours, hot work permits, and construction debris removal.
Walk the existing space with your phone and take 100+ photos. Photograph above ceiling tiles, inside electrical panels, behind access panels, and at every column line. You will reference these photos during takeoff and again during buyout.
Existing Conditions Allowances
For remodel/TI work, include contingency for unknowns:
| Condition | Suggested Allowance |
|---|---|
| Concealed conditions (behind walls) | 5–10% of affected scope |
| Abatement coordination delays | Include in schedule, price standby time |
| Structural modifications (unplanned) | Flag as exclusion or allowance |
| Existing utilities not shown on plans | 3–5% contingency |
Fast-Track Scheduling
TI projects almost always start before design is complete. Tenants have lease deadlines. This affects your estimate:
- Assume overlap. Your crews will be working in areas while other trades are finishing nearby. Price for lower productivity.
- Material changes. Selections often change mid-project. Include a re-stocking/return contingency for materials ordered on early selections.
- Multiple mobilizations. You may need to come and go two or three times as design catches up. Each mob costs money — vehicles, tool transport, setup time. Price 1–3 extra mobilizations depending on project complexity.
Working in Occupied Buildings
Bay Area commercial TI often means working in buildings with active tenants on other floors:
- Noise restrictions — Typically no impact work (coring, demolition) during business hours. This forces you to off-hours work at premium rates.
- Dust containment — Negative air, temporary barriers, HEPA filtration. Budget $2–$5/SF of work area for containment.
- Security — Badging, sign-in/sign-out, background checks. All take time and cost money.
- Elevator usage — Limited to specific hours. Material deliveries get bottlenecked. Plan for it.
- Protection — Lobby floors, elevator cabs, common areas all need protection. Usually the GC's scope, but confirm.
Value Engineering
Value engineering (VE) is an opportunity to win work and build relationships — if you do it right. Done poorly, it looks like you are just trying to cut corners.
When to Offer VE
- During bidding — Include VE options as alternates or as a separate attachment with your bid. Do not bury them in your base number.
- During pre-construction — If you are brought on early, this is the best time. Changes are cheap on paper.
- During construction — VE is harder here because redesign costs and schedule impacts eat into savings. But if lead times are killing the schedule, a VE swap to an available product can save the project.
How to Document VE Proposals
Every VE proposal should include:
- Current design — What is specified (product, assembly, performance requirement)
- Proposed alternative — What you are recommending
- Cost impact — Exact dollar savings (or cost if the VE is schedule-driven)
- Performance comparison — How does the alternative compare? Same fire rating? Same STC value? Same warranty?
- Schedule impact — Does this shorten or extend the timeline?
- Risk — Any downsides? Aesthetic differences? Maintenance implications?
"We can save you $40,000 by switching from custom-welded steel door frames to knock-down frames, with no change in fire rating or appearance." That sells. "We want to use cheaper frames" does not.
Common VE Opportunities by Trade
| Trade | Common VE Idea | Typical Savings |
|---|---|---|
| Drywall | Reduce finish level from Level 5 to Level 4 where paint hides it | 10–15% on finishing labor |
| Framing | Switch from 16" OC to 24" OC where structure allows | 15–20% on stud material |
| Flooring | LVT instead of stone/porcelain in back-of-house areas | 30–50% on material |
| Electrical | MC cable instead of conduit/wire in accessible ceiling spaces | 15–25% on labor |
| Mechanical | Flex duct for final connections instead of hard duct | 10–15% on labor per connection |
| Painting | Spray instead of brush/roll in open areas | 30–40% on labor |
| ACT Ceiling | Standard 2x4 tegular instead of custom sizes | 20–30% on material |
| Concrete | Polished concrete floors instead of separate flooring over slab | Eliminates an entire trade |
Substitution Requests
If your VE involves a different manufacturer or product than specified:
- Check Division 01 for the substitution process. Most specs require a formal substitution request submitted 10+ days before bid.
- Include product data, test reports, and a point-by-point comparison to the specified product.
- On public work, substitution rules are strict. "Or equal" does not mean "anything you want."
- If the architect rejects your substitution, respect the decision and bid the specified product. Fighting the architect rarely ends well.
Post-Bid Analysis
You cannot improve what you do not measure. Post-bid analysis turns every bid — won or lost — into a learning opportunity.
Track Your Win Rate
Maintain a bid log with:
| Field | Why It Matters |
|---|---|
| Project name and GC | Track relationships |
| Bid date and amount | Historical pricing |
| Win/loss | Calculate win rate |
| Winning bid amount (if you can learn it) | Understand spread |
| Scope and SF | Normalize to $/SF |
| Estimator | Track individual performance |
| Bid type (hard bid, negotiated, invited) | Win rates vary by type |
Healthy win rates:
- Hard bid (open): 10–20%
- Hard bid (invited, 3–5 bidders): 20–35%
- Negotiated/relationship: 40–60%
If your win rate on hard bids is over 35%, you are probably leaving money on the table. If it is under 10%, your pricing may be off or you are not qualifying opportunities well enough.
Analyzing Losing Bids
When you lose, find out why:
- Ask the GC where you landed. "Were we competitive?" Most GCs will tell you if you were close or way off.
- Compare $/SF to your other bids for similar work. Are you consistent?
- Check your labor rates against the market. If you are union and competing against open-shop subs on private work, you may need to adjust strategy, not price.
- Review your scope — Did you include something others excluded? Or exclude something others included? Scope differences cause most "we were way off" results.
Scope Gap Analysis
After you win, compare your bid to the actual job cost. Common gaps:
- Change order scope that should have been in the base bid — means your takeoff missed it
- Underestimated labor — your production rates were optimistic
- Material overruns — waste factors were too low
- Missing general conditions — small tools, consumables, temp protection, cleanup
Track these gaps and feed corrections back into your estimating process. If you are consistently underestimating drywall finishing labor by 12%, adjust your production rates.
Building Historical Cost Data
Your best estimating resource is your own historical data. After every project:
- Capture actual costs by CSI code or cost code
- Calculate actual $/SF, $/LF, $/unit for major assemblies
- Note project conditions — building type, location, floor level, shift work, access constraints
- Store it where the estimating team can access it — a shared spreadsheet works. A proper estimating database is better.
Over time, you will build a library of actual costs that is more reliable than any published cost book. RSMeans gives you a national average. Your data gives you Bay Area reality for your company with your crews.
After every project, spend five minutes with the PM and foreman: What did we miss in the estimate? What surprised us? What would we price differently? Write down the answers and update your estimating notes. Five minutes per project compounds into a massive competitive advantage over five years.
Quick Reference: Estimating Checklist
Use this before submitting any bid:
- Read the entire bid invitation and all instructions
- Reviewed all plan sheets across disciplines
- Read all applicable spec sections, including Division 01
- Confirmed all addenda received and acknowledged
- Completed full quantity takeoff with areas/zones broken out
- Applied appropriate waste factors
- Included labor with adjusted productivity rates
- Got current material quotes from suppliers
- Included equipment and rental costs
- Accounted for mobilization, cleanup, protection, and general conditions
- Applied overhead and profit
- Priced all alternates and unit prices
- Listed all inclusions, exclusions, and assumptions
- Bid bond secured (if required)
- Math checked by a second person
- Bid submitted on time and receipt confirmed