422
Homesites and units across 2026 projects
Grex Dynamics · Development management · Owner’s representation
Making development work.
The development management team for housing and commercial projects: manufactured housing, townhomes, apartments, outdoor hospitality and RV parks. We run them from land to an operating property, holding the capital and the execution together.
Live
Project intelligence on every site
$85M+
Total development cost across 2026 projects
1
Team, land to closeout
S-01 · AI + development managers
Grex runs the project. All phases, every firm.
Grex is the development team for the life of your project. Our development managers run it, and our AI and project intelligence keep it measured.
Your time goes to decisions, not to coordinating a dozen firms, and there is no permanent department to carry between deals.
How a project is runOwnerRepresented
Sets the goals and makes the decisions
The team running the projectDevelopment managers
Run every phase. Accountable for your capital, your schedule and your decisions.
AI + project intelligence
Our software holds the schedule, budget and decisions on one record, and AI reads it with the cameras, drones and 360 capture to flag issues early.
Firms we overseeQualified, contracted, managed
01Diligence
- Surveyor
- Geotechnical engineer
- Environmental consultant
- Jurisdiction and utilities
02Predevelopment
- Architect
- Civil engineer
- Home manufacturer
- Planning board
03Preconstruction
- Contractor bidding
- Engineer of record
- Lender
- Permitting
04Construction
- General contractor
- Home manufacturer
- Inspector
- Lender and title
05Closeout
- General contractor
- Building official
- Title
- Operator
Every email, meeting, document and decision comes through us. The full history of the project lives on one record, so nothing depends on who remembers what.
S-02 · One record
Everything on the project is connected.
Five phases on one record, each run to save the owner time and money before the next one starts. When the schedule moves, the money, the site and the meeting notes move with it.
GrexProject recordPhase 01 · DiligenceGate passed
What we manage
- Intake and gap list
- Zoning and code research
- Every authority and utility
- Consultant RFPs and scoring
- Cost basis and timeline
Diligence results with the path to approval, the cost basis, the timeline and the design team to hire.
What we hold to the line
ComplianceThe approval route and every permit, mapped before design
Owner's goalsIntended use and highest and best use, stated plainly
ScheduleApproval path set against real hearing calendars
CostSoft and hard cost basis, each number labeled by source
Saves time
The approval route and every authority’s review time known before design starts, set against real hearing calendars.
Saves money
No design fees or deposits spent on a project that cannot be approved or does not work financially.
Gate 1Path known, team ready to hireThe owner signs off before the next phase starts
Phase 02 · PredevelopmentGate passed
What we manage
- Architect and engineers
- Surveys and reports
- Home manufacturer
- Pre-application meetings
- Submissions and hearings
Approved plans, every condition of approval logged with an owner and a trigger.
What we hold to the line
CompliancePlans designed to the approval register, reviewed at every milestone
Owner's goalsDesign options priced before the owner chooses
ScheduleSubmittals timed to the next board deadline
CostInternal estimate once plans carry quantities
Saves time
Submittals timed to the next board deadline, and no redesign loop after the plans are priced.
Saves money
Design fees go to designing instead of research, and every option is priced before the owner chooses it.
Gate 2Plans approvedThe owner signs off before the next phase starts
Phase 03 · PreconstructionGate passed
What we manage
- Contractor RFQ and RFP
- Bid leveling and best and final
- Construction documents and permits
- Home orders and owner-furnished items
- Lender, insurance and bonds
A Control Budget, an award recommendation and a construction-ready checklist.
What we hold to the line
CompliancePermits on the same plan revision that was bid
Owner's goalsAward recommendation, the owner decides
ScheduleUtility construction and production slots booked
CostControl Budget set before bids, revised to the contract
Saves time
Permits, home production slots and utility work lined up before notice to proceed, so the work starts on day one.
Saves money
Scope gaps caught on paper instead of as change orders, and the procurement savings measured against the Control Budget.
Gate 3Construction-ready, notice to proceedThe owner signs off before the next phase starts
Phase 04 · ConstructionIn progress · 44% of work in place
What we manage
- General contractor and trades
- Manufacturer delivery and set
- Inspections and conditions
- Pay applications and lien waivers
- Draws through title or lender
Weekly updates, monthly cost reports and draw packages, every claim checked against the site.
What we hold to the line
ComplianceConditions and inspections tracked under each permit
Owner's goalsWeekly update and decisions ready to make
ScheduleOne schedule of record, baseline kept
CostOnly verified work reaches a draw
Saves time
Issues flagged before they become delays, while there is still float to protect the finish.
Saves money
Only verified work is paid, and every change is priced against the budget before it reaches the owner.
Gate 4Substantial completionThe owner signs off before the next phase starts
Phase 05 · CloseoutPlanned
What we manage
- Punch and certificates of occupancy
- Warranties, as-builts and O&M
- Final waivers and retainage
- Turnover to operations
The closeout package: final cost, approvals, warranties and the full project record.
What we hold to the line
ComplianceEvery occupancy approval and acceptance in hand
Owner's goalsAn operating property, handed over complete
SchedulePunch closed with evidence
CostFinal cost against the Control Budget
Saves time
Punch closed with evidence, so occupancy and the first day of operation are not held up.
Saves money
Final cost reconciled, retainage and waivers closed, nothing left open to pay for later.
Gate 5ClosedThe owner signs off before the next phase starts
ScheduleLine 06 +5 working days
AugSepOctNovDecJan
Today
04Earthwork and grading
06Sanitary sewer, Section C
07Water main and services
15Home pads, Block 3
H2Home delivery and set
FinancialsSame line items as the schedule
Paid, with proof$6.08M
Signed, not paid$7.25M
Not signed yet$907K
Saved at bid$412KControl Budget vs. contract
Line itemBudgetCommittedPaidOver / under
04Earthwork and grading$395,000$364,000$327,600$31,000 under
06Sanitary sewer, Section CIncludes $42,600 rock excavation change, approved Sep 24$1,260,000$1,298,500$581,281$81,100 over
07Water main and services$855,000$842,300$402,120$4,200 over
15Home pads, Block 3$1,410,000$1,454,000$629,510$47,200 over
SiteDrone flight Sep 28
Drone · Sep 2806Sanitary sewer · 60% in place15Home pads · verified07Water main · crew light 2 days, flaggedMeetingsOwner, architect and contractor · Sep 24
Sewer in Section C is five days behind: rock at nine feet.
→ ScheduleLine 06 moved, home pads and delivery followRock excavation change order, $42,600.
→ FinancialsApproved by the owner, posted to line 06Home delivery for Block 3 moves one week.
→ ManufacturerProduction slot confirmedDrone flight Oct 1 to confirm sewer in place.
→ SiteLinked to line 06 for the next draw
06 One line item, the Section C sewer, runs through every view. Change it once and it changes everywhere.Our internal Grex system · sample data
S-03 · 2026
All recent projectsRecent projects
P-01155sites
155-Site Expansion, 55+ Community
Local approvals and the state variance in hand, plans sealed and bid-ready, bids leveled.
P-02159sites
159-Site Park Model Phase, Operating Resort Community
Joined mid-construction. One schedule of record from the first week.
P-0318units
18-Unit Apartment Community
Existing approvals brought current, and the project brought back to construction-ready.
P-0490units
90-Unit Workforce Townhome Community
Modular or site-built, decided by the numbers.
S-04 · Michigan, 155-site expansionThe projectAerial rendering
3.5months
Unanimous local approval of a special use permit, zoning text amendment and site plan approval, on first submission. We managed the engineers, surveyors and home manufacturer and worked with the county to take the plans from concept to a sealed, bid-ready set, while running preconstruction, the RFQ and the RFP, at the same time.
7 moUnanimous state variance
6Workstreams in parallel
NowPreconstruction, bids leveled
S-05 · Sheet index
New projects and expansions · NationwideMarkets we manage
- M-01Manufactured housing communities
- M-02Modular and townhome communities
- M-03Apartments
- M-04Outdoor hospitality
- M-05RV parks and resorts
SheetM-01
New communities and expansions
A manufactured housing community is two projects running at once: a land development project and a home procurement project. The site is approved, designed and constructed locally. The homes are produced in a plant on their own schedule. Grex runs both as one project, so the pads are ready when the homes arrive.
A property becomes an investment the day it operates at its intended use.
Until then, it is capital at risk.
We close that distance with facts, not assumptions.
S-06 · Field notes
All field notesFrom the projects
- 01The ROAD to Housing Act: what it changes for manufactured and modular housing, and what it does notPolicy · 10 min
- 02FHA in 2025 and 2026: what changed for rental, factory-built and workforce housingCapital · 7 min
- 03What actually sets the timeline on a manufactured housing community expansionManufactured housing · 7 min
Start a project
Where is your project today?
Engagements begin at any phase, raw land to mid-construction. Tell us where the project stands, and we will put together the plan to get it to operating.
01Land or a site under contractDiligence, path to approval, cost basis02Entitlement and approvalsSubmittals, hearings, state approvals03Design and pricingPlans, Control Budget, bids, contracts04Under constructionSchedule of record, verified progress, draws
Schedule a demoOr write to contact@grexdev.com. Every inquiry is read by the team and answered directly.