Landscape Estimating from Aerial Imagery for Portfolio Rebids

Say three commercial landscape branches around Columbus have to rebid 1,000 properties. Budget 47 minutes per property to trace the grounds, check exclusions and enter the estimating workbook. That is 783 hours and 20 minutes, or about $53,267 at an assumed loaded estimator cost of $68 an hour, before anyone drives to a site. The worked models below use planning allowances that your branches can replace with their own records; displayed decimals and percentages are rounded from unrounded calculations.

I would move the repeated measurement and scope review into a batch process. Asset Search by PorchRocket applies rules agreed with your estimating team and returns quantities with dated evidence. Exceptions travel with the scope. Let the estimator work on pricing decisions.

For new territory, Ground Control by PorchRocket finds commercial properties with visible lawns and planting beds. For a book you already have, begin with the site list and the maintained boundaries. A portfolio rebid needs a reviewed answer for each property, including the troublesome ones.

What does a commercial landscape bid need?

A commercial grounds estimate needs five work quantities: maintained turf, serviced beds, tree work, hardscape edges and task-specific exceptions, each tied to a boundary and frequency.

Start with the service agreement. Mark what the buyer wants performed and the unit that drives the cost, using the bid specification where one is supplied. Mowing belongs against turf area and an equipment class. Mulch needs net bed area and added depth. Pruning needs a work definition beyond the patch of green shown on a map.

I would require the following fields before a property enters branch pricing. The table is a scope record, so the person tracing the grounds and the person approving the estimate can check the same facts.

Work item	Quantity to carry	Scope decision to record	Question that can stop pricing
Maintained turf	Square feet by work zone	Included lawn versus tenant or naturalized area	Who maintains the rear strip?
Planting beds	Net square feet by treatment	Mulch, stone, seasonal color or another treatment	What added depth is required?
Trees	Distinct visible trees where separable, plus unresolved groups	Routine ground work versus separately specified pruning	What size and work specification apply?
Hardscape interfaces	Linear feet by task	Blade edging, string trimming or another service	Is the shared sidewalk assigned to this contract?
Access and exceptions	Zone IDs and written notes	Equipment route, exclusions and buyer instructions	Can the selected mower reach the enclosed lawn?

Put the annual schedule beside these quantities. Frequency changes the labor budget. A bed serviced every visit and a bed touched twice a year need different allowances even when their areas match. Carry cleanup and debris handling as their own tasks if the specification requires them.

For a multibranch company, agree on these units centrally and let each branch supply production rates. That preserves local operating judgment without allowing one office to call every green patch mowable turf while another subtracts the detention area. The process for winning commercial landscaping contracts starts earlier, with the account and buyer; the takeoff is the measurement record behind the proposed work.

Landscape takeoff software versus a reviewed scope

For a 1,000-property rebid, compare the hours needed to reach an approved estimate, including the time your branch spends checking maintenance responsibility after the drawing is finished and the quantities have landed in its workbook.

I would choose a drawing tool for a small group of straightforward sites when the estimator already knows the maintained boundary. For a 1,000-property rebid, I would compare the whole workflow: locating the correct site, tracing each service zone, reviewing the exceptions and loading the workbook.

The measurement base matters. The U.S. Geological Survey’s explanation of orthoimagery describes images corrected for terrain and camera-tilt distortions, with a uniform scale that permits map measurement. Establish the scale first. Enlarging a screenshot does not settle the location of a hidden bed edge.

Separate three questions during review. Is the drawn boundary supported by the view? Does that boundary describe the right surface? Does the buyer assign that surface to your contract? A reviewer can accept the first two and still leave the third open.

Asset Search cross-references aerial and satellite imagery with property records and public datasets. Your experts define what counts and how to handle edge cases; people review every candidate before delivery. For landscaping, put those rules into the scope before measurement starts. Define how tree rings intersect beds and what happens when a lawn runs across two parcels.

Compare options using a troublesome property from your own book. Ask for its raw quantities and its unresolved questions. Then ask a branch estimator to price it without an explanation call. Have the estimator locate the maintained boundary and trace one exclusion back to the buyer’s instructions. If someone has to redraw it from the attachments, include that effort in the workflow comparison.

The broader asset inventory from aerial imagery guide explains how the reviewed search works across other visible assets. Landscape estimating applies that process to the service zones and exceptions in a maintenance agreement.

How do you measure turf from aerial imagery?

Measure net maintained turf by tracing visible grass, subtracting exclusions and splitting the accepted area into equipment classes.

Penn State Extension’s lawn establishment guidance describes measuring site area, accounting for irregular shapes and subtracting structures where turf will not be established. Use that subtraction discipline in a maintenance takeoff, then add the contract’s responsibility rules.

For the model’s office property, carry 94,600 square feet of visible turf before responsibility exclusions. The buyer confirms that a tenant maintains 8,200 square feet and an 8,000-square-foot meadow is outside the mowing schedule. Do the subtraction first. Net maintained turf is 94,600 minus 8,200 minus 8,000, or 78,400 square feet.

Assign a different zone ID to each subtraction. Keep the outline and the buyer’s confirmation with it. When a manager asks why your turf quantity differs from the previous proposal, the estimator can point to the tenant strip instead of arguing over a total.

Next, divide the included area by the planned work method. In the model, 54,000 square feet is open mowing, 18,600 is smaller lawn sections and 5,800 is restricted-access turf. Those quantities will receive separate production allowances. Retain the total as a reconciliation check.

For obscured ground, draw the visible limit and mark the missing answer. My rule is to keep a hidden area out of the accepted quantity until a second view or field measurement supports it. Record the unresolved zone’s location so a branch manager can check that patch during the walk.

Use square feet throughout the estimating sheet unless the buyer requires another unit. Calculate conversions in the workbook. A property book that mixes acres and square feet without an explicit unit column forces the reviewer to guess which value the production formula expects.

Mulch bed measurement starts with area and depth

Multiply net bed square feet by added depth in inches and divide by 324 to calculate cubic yards.

The bed outline answers only the area question. Ask whether the scope calls for a fresh installation, a top-up or removal followed by replacement. Keep rock beds and seasonal planting areas in separate classes, even if one person maintains all of them during the same visit.

Iowa State University Extension’s mulch calculation multiplies area by depth in feet and divides cubic feet by 27 to obtain cubic yards. With depth entered in inches, the equivalent formula is:

Cubic yards = net bed square feet × added depth in inches ÷ 324.

The model property has 12,420 square feet inside its gross bed outlines. Subtract 620 square feet of stone treatment and 460 square feet assigned to a tenant. The remaining mulch scope is 11,340 square feet. At an agreed added depth of 2 inches, 11,340 × 2 ÷ 324 = 70 cubic yards.

That 2-inch input needs a field decision. University of Florida IFAS Extension’s mulch guidance recommends maintaining a 2-to-3-inch layer around established plantings and describes replenishing the existing layer. A specified finished depth and the amount added this year are different inputs. Record both where they apply.

Give ordering allowances their own column. Do not redraw the bed larger to conceal an ordering allowance. If the quantity changes after the walk, check the area first. Then check the depth and purchasing policy. The revised material order should show which input changed.

I would also record the unloading point and the proposed material route. The field reviewer can then check whether the planned equipment reaches every included bed from that location. Price a longer carry where needed. Attach that handling time to the bed zone it serves.

Trees and hardscape edges need their own work units

Use counts for specified tree tasks and linear feet for edging, with each quantity attached to its assigned service.

For tree work, define the bid item before asking for a count. Tree-ring maintenance and a specified pruning operation should occupy different lines in the workbook. Identify a tree where the view supports a distinct object; mark an overlapping group for field review instead of assigning one count to every rounded canopy shape.

I would ask the branch reviewer to confirm the size class and proposed work during the walk. Carry the confirmed count back to its map IDs. Budget the inspection separately when the image cannot settle the task. Send the reviewer to the identified group rather than asking for another count of the whole property.

Hardscape interfaces need equally clear definitions. Trace the turf-to-sidewalk line assigned to blade edging separately from fence trimming. If a bed border receives a different treatment, give it a different code. Check shared boundaries so the same line does not enter two labor formulas for the same task.

Record edge length in linear feet and leave the service frequency visible. A property manager can accept one annual bed-edge reset while asking for sidewalk edging during selected visits. Count each task once. The quantities stay the same; the schedule changes the annual labor.

For properties carrying other services, preserve common site and zone IDs. The paving aerial takeoff workflow can reference the same curb and parking boundaries, while snow removal aerial takeoffs can reference the entrances and sidewalks. Each trade still needs its own assigned scope. Sharing a site drawing should reduce duplicate locating work without silently adding services to the landscape agreement.

Exceptions that quietly consume the margin

A gate restriction or wrongly assigned frontage changes the crew hours you must buy for every scheduled landscape maintenance visit.

I would sort exceptions by the decision they require. Responsibility questions go to the buyer; physical access questions go to the field reviewer. Ask the branch manager to approve the resulting production assumptions, especially when the proposed equipment changes. Assign each question. Set a deadline.

Exception	What the takeoff records	Who settles it	Change to the estimate
Shared frontage	Separate outline beside the main site	Buyer confirms responsibility	Include or exclude the stated tasks
Enclosed lawn	Visible turf and proposed access point	Field reviewer measures clearance	Select equipment and production allowance
Naturalized area	Separate vegetation zone	Buyer confirms treatment schedule	Price the specified operation and visits
Obscured bed	Visible limit and unanswered area	Reviewer checks another view or the site	Resolve quantity before material ordering
Restricted service window	Buyer instruction attached to site	Account manager confirms timing	Budget the required crew deployment

In the model, assume an access restriction adds 28 elapsed minutes for a three-person crew on each of 29 visits. That is 28 × 3 × 29 ÷ 60 = 40.6 paid worker-hours. At the model’s $31 loaded field labor allowance, the annual difference is $1,258.60 for one property.

Attach the cost to the restriction. A general percentage spread across the whole portfolio makes it harder to see which site needs a different mower or a buyer conversation.

An exclusion also needs evidence. I would accept a buyer-confirmed maintenance boundary as the basis for excluding a tenant strip. I would leave responsibility unresolved when the only evidence is a change in grass color. Send the buyer a marked view and ask for a written inclusion or exclusion against the zone ID.

Irrigation and slope checks belong in the field

Use aerial takeoffs to locate areas needing review, then verify the operating conditions on site before assigning equipment and labor to irrigation or slope work.

EPA’s WaterSense landscaping guidance describes hydrozoning as grouping plants by water needs. Keep distinct landscape treatments separate in the takeoff. If irrigation service belongs in the agreement, request the system records and assign a field review for the specified tasks.

For mowing, OSHA’s riding mower guidance directs employers to consider terrain and follow manufacturer slope limits. Mark pond margins and banks for review. Let the field findings and equipment instructions determine the operating method before the branch assigns its production rate.

Write field questions that can be answered. Replace “check access” with “measure the clear gate opening at zone T-04 and confirm the proposed mower can enter.” Replace “check mulch” with “record existing depth in bed B-07 and confirm the added depth for this renewal.” Attach the answer and dated field photo to the same record.

I would rank these checks by their effect on price. A question that changes mower selection goes ahead of a small bed correction. The estimator can release settled zones for pricing while the branch resolves the material operating questions.

How should a 1,000-property rebid run?

Run a 1,000-property rebid in batches sized to branch review capacity, using stable site IDs and shared quantity definitions while each branch applies its own production rates after resolving material questions.

Work backward from the deadline. Divide the book by award date and operating territory. Ask each branch how many reviewed properties it can price and how many field questions it can settle during that window. Match delivery batches to those limits.

The model compares 47 minutes of internal desk takeoff with a 13-minute internal review allowance after a prepared scope arrives. Both allowances cover desk work only. Keep field visits and proposal approval outside this comparison so the time categories stay consistent.

Desk workflow for 1,000 properties	Minutes per property	Total desk minutes	Total estimator time
Internal tracing, scope check and workbook entry	47	47,000	783 hours 20 minutes
Review of prepared scope and workbook import	13	13,000	216 hours 40 minutes
Difference available for other estimating work	34	34,000	566 hours 40 minutes

The time difference is exactly 47,000 minus 13,000 = 34,000 minutes. At the assumed $68 loaded hourly rate, its labor value is 34,000 ÷ 60 × $68, or about $38,533.33. Calculate costs from the minutes, then round the final dollar result; subtracting independently rounded dollar totals creates a mismatch.

Use the difference as capacity planning. Spread equally across three branches, the released time is about 188.9 hours per branch. Assign those hours to the buyer clarifications and proposals waiting behind the rebid. A freed estimator hour becomes a cash saving when spending changes; otherwise it is time available for more work.

Start with a pilot containing both ordinary and difficult properties. Include a shared frontage and an obscured bed, along with an enclosed lawn. Set acceptance rules before release. A pilot made entirely of open turf will not test the exception process.

For the model’s month, I would use the first week for rules and pilot review, the second for the earliest pricing batches, the third for the remaining field questions and the fourth for branch approval. Confirm the production and delivery schedule in the Asset Search scope. Do not assume a custom portfolio uses the self-serve list turnaround.

Repricing an acquired landscape book

An acquired maintenance portfolio needs a quantity and service reconciliation before repricing, with inherited scope preserved beside the buyer’s confirmed requirements and the acquiring branch’s work units.

Preserve the old site IDs as reference fields when you assign the new IDs. Match properties by address and parcel, then confirm the maintained site. Where several properties share an entrance, retain separate service records if the contracts assign different responsibilities.

I would compare four inputs before changing a renewal price: mapped quantities, visit schedule, inherited exclusions and recorded labor. Keep the old values visible. A reviewer needs to see whether a price change comes from more work, a different operating plan or a correction to the old quantity.

Use the mapped zones to ask focused questions about labor records. If a site repeatedly exceeds its budget, check whether the hours include an extra cleanup, an access delay or work outside the assumed boundary. Resolve the task and frequency before editing the production rate.

Prepare the buyer conversation from that record. A marked view showing an included frontage and its visit schedule gives the account manager a specific scope change to discuss. Keep the buyer’s answer with the renewal version that uses it.

Route assignments deserve a separate review after scope reconciliation. Use the route density calculator to examine the travel plan for the receiving branch. Keep site work and travel visible in the estimate so moving the account between routes does not conceal a quantity error.

Save the approved version. It becomes the reference for the next service change, acquisition review or rebid. Record who accepted the scope and which dated views supported it.

What is a reviewed takeoff worth per property?

Value a reviewed landscape takeoff by the estimating time it releases and the documented operating errors it prevents, then compare those benefits with the quoted investigation cost.

At 34 desk minutes released and $68 per hour, the model produces about $38.53 of estimator capacity per property. Across 1,000 sites, the unrounded calculation yields about $38,533.33. Treat that as the labor side of the decision. Keep any margin correction separate and count it only where the site record supports the change.

Run a sensitivity check before buying at portfolio scale. Hold the internal starting point at 47 minutes, change the review allowance and use the pilot to decide which row fits your book.

Case	Review minutes per property	Minutes released per property	Time released across 1,000 sites	Labor value, rounded to cents
Low benefit	42	5	83 hours 20 minutes	$5,666.67
Middle benefit	27	20	333 hours 20 minutes	$22,666.67
High benefit, opening model	13	34	566 hours 40 minutes	$38,533.33

The decision rule is direct: compare the quoted search cost plus your internal review and coordination with the internal workflow it replaces. Put the released hours to work. Identify the waiting proposals they will cover, or the paid overtime you can remove from the rebid budget. Require a pilot that tests the difficult scope questions behind the estimate.

For an existing rebid book, I would choose pricing per completed investigation. Every property needs an answer, including sites rejected under the search rules and sites held unresolved for a named field check. Per accepted result fits a search for new target properties; it leaves the wrong incentive for a book where the branch must account for every address.

Asset Search also offers subscription terms for monitoring and refresh editions. Choose that model when the estimating team needs ongoing changes across a territory. Most buyers start with a small paid pilot credited toward the full order. Agree on the acceptance rule and the format before comparing quotes.

Time the pilot review. Record when an estimator opens a prepared property and when it is ready for branch pricing. Log clarifications separately. That separates time spent reviewing the delivered work from time spent waiting for a buyer to answer a responsibility question.

Include coordination in the buying decision. If the opening model also requires 18 internal hours to prepare the property book and reconcile delivery batches, that costs 18 × $68 = $1,224. The net labor capacity value available to offset the quoted investigation cost falls to about $37,309.33. Keep that allowance outside the per-property review timer so it is counted once. If the pilot exposes repeated rework, increase the review minutes before approving the full book.

From turf quantities to crew hours and bid price

Price the accepted work by converting quantities into worker-hours, applying visit frequency and adding the costs assigned to that service agreement.

The model’s 78,400-square-foot turf scope uses three production allowances. These are single-operator square feet per worker-hour, so the resulting hours can enter the labor budget without another crew-size multiplier.

Mowing zone	Included square feet	Assumed square feet per worker-hour	Worker-hours per visit
Open lawn	54,000	27,000	2.0
Smaller lawn sections	18,600	9,300	2.0
Restricted-access turf	5,800	2,900	2.0
Total mowing	78,400	Calculated by zone	6.0

Add 1.6 worker-hours for the assigned trimming and edging, 0.9 for visit cleanup and 0.8 for allocated loading and travel. Total routine labor becomes 9.3 worker-hours per visit. At 29 visits and $31 per loaded worker-hour, the annual routine labor budget is 9.3 × 29 × $31 = $8,360.70.

The model also budgets 100 worker-hours for the specified seasonal services, adding $3,100. Carry $1,840 for the equipment, fuel, supplies and disposal assigned to this base agreement. Total direct cost is $13,300.70. Mulch installation and other separately approved enhancements remain outside that base price.

Gross margin is the share of the selling price left after these direct costs. At a target gross margin of 32%, divide $13,300.70 by 0.68 to obtain a rounded annual base price of $19,559.85 before any applicable tax. Multiplying cost by 1.32 would apply a markup and produce a different margin.

Check the loaded rates. Budget required overhead recovery and desired profit from the gross profit left by the price, and avoid charging the same equipment cost in both the hourly allowance and a separate line. Keep the model’s allocated travel consistent with the branch’s route plan.

For the public side, Bid Control by PorchRocket brings public grounds opportunities together with their bid papers and addenda. Use the same quantity discipline while following the buyer’s specified service units and submission requirements. Save the bid packet beside the takeoff version used for the price.

Finding the next properties with Ground Control

Ground Control by PorchRocket is the fastest starting point for finding commercial properties with visible lawns and planting beds in your chosen service area. Use the commercial grounds list to select building types and grounds features, then order owner or decision-maker research as priced add-ons where needed. Commercial lists cost $10 to $20 per building and arrive within 48 hours after payment. Report a wrong match within 30 days for a credit back. These are target accounts for your outreach. Move qualified properties into an Asset Search scope when you need custom quantities and exceptions for their bids.

For new-account planning, the model budgets 120 target buildings at the top of the published range: 120 × $20 = $2,400. Allow 11 outreach minutes per building at $54 per hour, or $1,188. Budget another 16.5 estimator-hours at $68 for all remaining qualification and proposal work, including internal takeoffs: $1,122. Acquisition spending totals $4,710. Add any separately quoted research or outsourced takeoffs to that budget if you order them.

For these new accounts, assume 120 buildings produce 24 conversations, eight qualified proposals and two signed agreements. Those stage rates are 20%, one-third and 25%; the model’s outreach and estimating allowances cover that funnel. Each signed account has $29,400 in annual revenue, a 34% gross margin and five full years of service at unchanged revenue and margin. Customer lifetime value here means gross profit over the assumed account life: $29,400 × 0.34 × 5 = $49,980 per account. Two wins from 120 buildings is about a 1.7% overall close rate. Customer acquisition cost is $4,710 ÷ 2 = $2,355 per account.

The two accounts produce $99,960 in five-year gross profit. Lead-list ROI is ($99,960 minus $4,710) ÷ $4,710, or about 2,022%. That calculation uses gross profit before general company overhead and undiscounted account cash flows. With one signed account, the same spending produces about 961% ROI. Rework the assumptions in the lead-list ROI calculator, including the cost of the takeoffs your qualified opportunities need.

How to prepare landscape takeoffs, step by step

Run a portfolio takeoff through eight steps, from the buyer’s maintenance boundary to branch approval, with one record connecting each quantity to its pricing decision.

1. Set the rebid boundary. Confirm which properties are being priced, the deadline for each batch and the service start. Request the current scope, site plans and known exclusions. Give every property a stable ID before addresses move between systems.
2. Define the work units. Agree on turf classes, bed treatments, tree tasks and edge services. Write how shared frontages and overlapping features will be handled. Keep annual frequency in a separate field from the measured quantity.
3. Send the Asset Search pilot. Submit the territory or property book through Asset Search for landscape takeoffs. Include your workbook columns and difficult example sites. Agree on a quoted scope, review rules and delivery batches; the paid pilot is credited toward the full order.
4. Review the evidence. Compare the pilot’s dated views and quantities against the buyer’s scope. Read the reject reasons and unresolved questions as well as the accepted work. Correct the shared rules before releasing the rest of the book.
5. Assign the field questions. Give responsibility questions to the account manager and physical checks to the branch reviewer. Identify the zone, the decision needed and the date. Attach the answer where the estimator will price it.
6. Apply branch production rates. Import accepted quantities into the estimating workbook. Calculate worker-hours by work method, then add frequency and travel. Check equipment allowances against the access answers instead of applying one mowing rate to every site.
7. Approve the proposal version. Have the branch manager compare the price with the included work and remaining qualifications. Record approval against the quantity version. Send the buyer a scope drawing that matches the proposal.
8. Keep the record current. Save field corrections and approved scope changes against the same IDs. Recheck changed sites and use refresh work for the next renewal. Carry the accepted quantities into operating budgets so the crew can report against them.

What Asset Search delivers for a landscape rebid

Asset Search returns a reviewed property record connecting visible landscape quantities to dated evidence, with scope exceptions and named field checks attached for your estimator.

Set the search rules with your estimating director and branch reviewers. Asset Search can investigate one county or a territory across the contiguous United States. The search extends beyond existing directories, and every candidate is reviewed by people before delivery. For a supplied rebid book, agree on the investigation and required answer for each site.

The landscape handoff should give your team six things:

• Location, parcel and your site ID, with owner information and decision-maker contact where it applies.
• Agreed turf and bed quantities, visible tree observations and service-specific edge measurements, organized by zone.
• Dated views and the observed facts supporting each accepted quantity or exception.
• A disposition of fits, rejects with a reason, or unresolved with the field check that settles the question; every disposition is returned.
• CSV, Excel, GIS-ready files or an agreed import mapped to your estimating and account records.
• A refresh process that rechecks sites as new imagery arrives and re-answers previously searched sites when your scope rules change, often using the evidence already available.

Use per completed investigation for the rebid, then consider a monitoring subscription for changes that affect the next edition. Start through the two-minute form with what to find and where; PorchRocket returns a scope and quote. Put the pilot through branch review, then release the book in the format your estimators price every day.