What a Real Estimate Should Include

An estimate should contain enough information that somebody else could build the job from it. If it does not tell you what is going underneath the surface, in what material, to what depth, and what happens when the ground turns out to be different than expected, it is not an estimate. It is a number with a company name on it.

That sounds like a high bar. It is not — it is a page or two of plain writing. But it is the difference between comparing two bids and comparing two guesses, and it is the single most useful thing a homeowner can insist on.

The principle underneath all of it

The parts you cannot see after the job are the parts that have to be written down before it.

Everything visible you can inspect on the last day. The paver color, the finish on the concrete, whether the edges are cut clean, whether the lawn is flat. If any of that is wrong you will know immediately and you can say so.

Everything buried you can verify exactly twice: by reading it in the scope, and by watching it go in. After that it is under six inches of aggregate and you are taking somebody's word for it in year four when something settles.

So base depth, compaction method, reinforcement, drainage, and disposal belong in writing. Not because contractors are dishonest, but because in five weeks a crew lead who was not on the walk is going to run this job off the paperwork, and whatever you were told at the curb does not exist unless it made it onto the page.

What a vague line hides

Here is the difference, in one row each.

None of that is exotic. It is the information the crew needs anyway, written down where you can also read it.

Section by section

Scope by area. Each work area named and measured. "Rear patio, 380 square feet" and "side yard walkway, 62 linear feet" rather than "backyard hardscape." Quantities are what make two bids comparable; adjectives are not.

Demolition and disposal. What is coming out, how deep, who hauls it, and whether disposal is included. Concrete tear-out generates a lot of weight and it costs real money to get rid of. "Haul-off included" is a line item, not a courtesy, and its absence is a common source of a surprise later.

Excavation and subgrade. The excavation depth, and a statement that the subgrade is compacted before anything goes back in. This is also the right place for the most common change order in the trade: what happens if soft material, buried debris, or an old slab shows up deeper than expected. A good estimate names that in advance with a unit price — so much per cubic yard of over-excavation and replacement — rather than leaving it as "we will see what we find."

Base. Material named, depth as a number, and the words "compacted in lifts." All three. A base depth without a compaction method is half the specification, and a base that goes in as one deep pour of aggregate with a plate compactor run over the top has been quoted as a base and delivered as a pile.

Surface materials, in product terms. Manufacturer and product where it applies. Slab thickness, mix strength, reinforcement size and grid spacing, and how the steel is held up. Paver size, color, and pattern. Turf pile and infill. Sod variety. If the estimate names the visible product in detail and goes vague on the layer below it, that asymmetry is telling you something.

Drainage, in words. Where the water goes, said out loud. Any surface drains, catch basins, channel drains, pipe sizes, and the point where the pipe discharges. "Graded to drain" on its own is not drainage; it is a hope with a slope on it.

Irrigation. Zone count, head types, what is being reused versus replaced, and — for any drip — a filter and a pressure regulator at the valve. Those two parts are the most commonly omitted items in the whole trade and their absence does not show up for two seasons.

Access, staging, and protection. Where materials and the dumpster go, how the crew gets to the back yard, what gets protected, whether an existing sprinkler line crossing the access route is expected to be cut and repaired, and what the site looks like at the end of each day. These are the items that generate friction rather than cost, and naming them prevents most of it.

What is excluded

This is the section that separates a serious estimate from a hopeful one, and its absence is a bigger warning sign than any single number.

Exclusions should be explicit: engineering, permits and agency fees, utility relocation, unknown subsurface conditions, work by others, irrigation repairs outside the work area, plant replacement after establishment, anything contingent on a neighbor's cooperation.

An estimate with no exclusions at all is not a more generous estimate. It is one where the boundary of the job has not been thought about, which means it will be decided later, under pressure, with the work half done.

The regulation-adjacent items

Engineering, permits, inspections, and backflow requirements all belong in the estimate as line items — included, allowed for, or explicitly the owner's responsibility.

What they cannot be is assumed. Requirements vary by city, and the honest answer to "does this need a permit" is one that is specific to your address rather than to the trade in general. That is a question we confirm during the estimate for the actual property, not one anybody should be answering from a blog post.

What you can reasonably expect on the page: who pulls what, who pays the fees, whether inspections create scheduling holds, and what happens to the schedule if an agency takes longer than expected.

Money, as structure

No article should quote you a price, and this one will not. But payment structure is part of the document and it is worth knowing what a normal one looks like.

A reasonable structure is a modest deposit, progress payments tied to completed milestones, and a final payment on completion and walkthrough. Milestones should be things that either happened or did not — demolition complete, base in and compacted, concrete poured, planting installed — not dates on a calendar.

The shapes worth questioning:

• A large payment demanded before any work starts or any material is ordered.
• Payments tied to dates rather than to completed work, which pays for schedule rather than progress.
• Payment in full before the final walkthrough.
• A meaningful discount offered for deciding today. Real pricing does not expire in an afternoon.

Allowances and unit prices are the honest tool for the parts that genuinely cannot be fixed until something is opened up. A named allowance for the paver product you have not chosen yet, or a per-yard unit price for over-excavation, is far better than a padded lump sum — because when the actual quantity is known, the adjustment is arithmetic instead of a negotiation.

Change orders

Every change order should be in writing, priced before the work proceeds, and signed. That is the mechanic. The judgment is more interesting.

A job with zero change orders is either genuinely simple or somebody absorbed something without telling you — which sounds generous and usually means a corner moved somewhere else.

A job with constant change orders was underscoped to win the bid. That is the pattern behind the low quote that becomes the expensive job: the number that won was for less work than the job actually contains, and the difference arrives in installments once the yard is torn up and you have no realistic option to stop.

The way to spot it in advance is to read the scope for the things that are missing rather than the things that are there. A bid that never mentions disposal, never mentions what happens if the subgrade is soft, and never mentions drainage is not cheaper. It is smaller, and the rest of it is coming.

Warranty, and what nobody warrants

Three different things get called a warranty and they should be separated on the page.

Workmanship is the contractor's, for a stated period. It covers installation defects — settlement from inadequate compaction, seams opening, heads not covering, a wall that moves.

Materials are the manufacturer's, and the terms are theirs. Turf, pavers, and controllers all carry their own, usually longer than the workmanship term and usually narrower than people assume.

Things nobody warrants, which should be stated so they are not a surprise: hairline cracking in concrete, joint sand settling in the first year, plant loss caused by watering, minor settlement that gets topped up, color variation in natural products.

Anyone warranting that a concrete slab will not crack is telling you something about their sales process rather than about concrete. Cracking is controlled, not eliminated, and a warranty that promises otherwise is one that will be argued about.

Ask what voids it, too. Watering practices, sealing intervals, and adding a surcharge behind a wall are all common and legitimate exclusions, and it is better to read them now than to discover them during a claim.

Comparing two quotes

Do not compare the totals. Compare the quantities, and then look at where they differ.

Make a list of the buried numbers for each bid — excavation depth, base depth, base material, compaction method, bedding depth, reinforcement, drainage, disposal. Put them side by side. Then:

• Where one bid is silent, ask. Get the answer in writing and added to the scope, not over the phone.
• Where the numbers differ, ask why. Sometimes there is a good reason: different soil assumption, different loading, a different product. A contractor with a reason will give it to you immediately.
• Where the scopes now match and the totals still differ, you are finally comparing prices — overhead, crew, schedule, how busy they are. That comparison is legitimate and it is the only one that is.

The honest thing to say here is that a low bid is not automatically a bad bid. Sometimes it is the same job from a leaner operation. You simply cannot tell from the total, and the only way to find out is to normalize the scopes first.

Red flags, collected

• A one-line estimate with a number at the bottom.
• Pressure to sign today, or a discount that expires.
• A large cash deposit before mobilization.
• No exclusions listed anywhere.
• Reluctance to state a base depth or put drainage in writing.
• A same-hour price from a phone call without a site visit. Writing a real estimate takes time on the property, and a number produced without it is a placeholder that will be revised.
• No license number offered, or a reluctance to have a certificate of insurance sent to you directly by the insurer rather than forwarded as a copy.
• A scope that describes the visible materials in loving detail and the base in one word.

What to ask before you sign

1. Can you walk me through the scope line by line and tell me what is not included?
2. What base material and depth, and is it compacted in lifts?
3. Where does the water go? They should be able to point at the spot.
4. What happens if the subgrade is worse than expected — is there a unit price for that?
5. What is excluded, and what is an allowance rather than a fixed price?
6. How are change orders handled, and will anything proceed before I sign one?
7. What does the payment schedule tie to — milestones or dates?
8. What does the workmanship warranty cover, for how long, and what voids it?
9. Who is actually on site, and who do I call when something comes up?
10. What is the sequence, and what are the known waits? Cure time, sod delivery, inspection holds.

If the answers are vague on all ten and the quote is confident about the total, you have learned something useful — and it took twenty minutes rather than four years.