Filamental for construction and development

The thing that stops a scheme is never the thing you were watching

A pre-commencement condition with a seasonal survey window. A drawdown that unlocks only on evidence of start on site. A contribution that falls due on first occupation, indexed from a date in 2024. None of it is on a programme, because none of it has a date yet, and all of it is load-bearing. This is where you keep what you have signed, alongside what each one blocks.

Eight organisations, one person

You are the only one who can see the whole scheme, and you are also on site

The council holds the conditions. The lender holds the drawdown schedule and the facility expiry. The solicitor holds the agreement and the trigger buried in it. The contractor holds the mobilisation window. The agent holds the reservations, and one of the buyers has a scheme approval that has gone quiet. Each of those parties is competent and each of them can see precisely one column of the scheme.

The joins between them exist nowhere but in your head, and the joins are what the scheme actually runs on. You do not lose money on the thing you were worrying about. You lose it on the one that was three moves away from it.

What it actually does

A condition is a thing, and it points at what it is holding up

Every plot, permission, condition, obligation, contract, facility, consultant and counterparty is a node. The lines between them are typed and directional, named by you: blocks, triggers, discharged by, secured against, bound by. So the ecology condition does not sit in a folder of decision notices. It sits attached to the start date it is blocking, which is attached to the first drawdown it releases, which is attached to the facility whose expiry sets the end of everything.

That is the difference between recording an obligation and holding one. A calendar cannot carry a payment that falls due on first occupation, because first occupation is not a date, it is an event that has not happened. Drawn as a relationship it is permanent, visible, and attached to the thing that will cause it, so it surfaces the moment you look at the plot rather than three weeks after somebody moves in.

Then the ordinary part. Drag the decision notice onto the permission, the ecology report onto the condition it discharges, the facility letter onto the loan and the reservation form onto the plot. Click any of them and it opens in whatever normally opens it. Nothing is converted, and the folder underneath is still a folder.

A worked cascade, in progress

Eight units, one protected species, and a whole season

A small residential scheme, eight units, permission granted and everything apparently on track for an October start. One pre-commencement condition is outstanding: an ecology survey, required because there is a Victorian outbuilding on the plot with features suitable for roosting. The consultant is appointed and booked. Nothing about this looks like the problem on the site.

Then the chain. That survey can only be carried out inside the active season, roughly May to September. The results go to the authority for approval, which takes six to eight weeks to determine. Nothing at all may start on site until the condition is formally discharged, which means no demolition, no groundworks, not even stripping topsoil. The contractor is holding programme capacity but cannot mobilise, and needs four weeks once cleared.

Two more hops and it stops being a planning matter. Start on site is what evidences the first drawdown on the development facility, so the money does not move either. Miss the window and the next viable survey season is the spring, which is a full season lost on land carrying finance at a shade under one per cent a month, against a facility that expires at the end of the following year and would then need the lender's agreement to extend. One protected species, four hops, and the entire commercial shape of the scheme.

Condition 12, out in the open The note on the development says it in the developer’s own words: start on site is contingent on the bat survey. The red connector reads blocked by.
A residential development space in a warm light interface over a dark green field. The Ash Tree Lane development is selected, and its notes read that the site is pre-commencement and that start on site is contingent on clearing Condition 12, the bat survey, which is the critical path item. Its type properties give eight semi-detached houses, a gross development value of £3.2M and a Coventry location. Behind it the graph carries Condition 12 Bat Survey Outstanding, Start on Site October 2026 target and Development Finance Drawdown, joined by coloured connectors including a red one labelled blocked by.
The same site, published Ash Tree Lane as a page, carrying its planning reference and its plot count. The graph stays on the left, so it is visibly the same structure.
The same development space with the graph in 2D on the left and Publisher on the right. The graph shows Ash Tree Lane joined to its main contractor, its architects, its ecologist and the Start on Site milestone, with the connector legend listing Counterparty, Development, Issue, Milestone, Obligation, Person and Plot. The published page carries a photograph of a new-build street as its cover, the Ash Tree Lane heading, and body copy giving eight semi-detached houses on a 0.4 hectare infill site with full planning permission granted under reference 2024/0891/FUL.
What this is not

There is no Gantt chart in here, and there is not going to be

It does not calculate a critical path, level resources, assign tasks, chase anybody or produce a programme. It will not tell you what today's priority is. Those are real jobs and there is real software for them, most of it built for schemes considerably larger than yours, and none of it is what this is.

What it is, is a folder on your own machine. No account, no sign-in, no portal, no seat licences and no telemetry, so nothing about a scheme, a lender or a buyer leaves the device it is on. Notes are plain text files and attachments are the actual files, which means you can open the folder in Explorer and it looks like a folder, because it is one. It also works with no signal at all, which is the ordinary condition of a site cabin.

It will not do your valuations, your CIS returns or your health and safety file either, and is not trying to. Keep whatever does. This is for the layer above them, which is currently your memory.

The people you have to answer to

Nobody else on this scheme is going to install anything

Your solicitor works in a case management system. Your contractor works in a programme. Your lender's monitoring surveyor works to a certificate. Your agent works in a property portal. None of them will adopt your software and it would be strange to ask, so any tool that only pays off when everybody uses it is a tool that does not pay off here.

This one is the opposite: one person holds the structure, and the moment somebody needs to see it, the space goes out as a link or a single file that opens in an ordinary browser with the whole thing navigable inside it and the documents attached where they belong. The lender asking why the start has moved and what it does to the drawdown schedule gets an answer they can read rather than a phone call and a promise. The same document is what an incoming partner, a buying agent or your own successor would need, and it is the version of the scheme that does not walk out of the door with you.

Where you start

Four Templates ship for this work

You do not begin with a blank screen. A Template is a starting vocabulary, the kinds of thing that exist in a job and the ways they relate, so the categories are already there and already coloured when you make a space.

Included, on every plan
  • Contract & Obligation. Contract, Party, Obligation, Right, Term, Trigger Event. Joined by binds, triggers, modifies, conflicts with and assigned to.
  • Programme Delivery. Programme, Project, Milestone, Team, Dependency, Deliverable. Joined by contains, depends on, owned by, delivers and blocks.
  • Risk & Issues. Risk, Issue, Control, Owner, Project, Impact. Joined by affects, mitigates, owned by, escalates to and triggers.
  • Stakeholder Management. Stakeholder, Interest Group, Project, Communication, Decision, Influence. Joined by interested in, influences, informed by, decides on and part of.

A starting point, not a schema you are stuck inside. Rename a category, add one, delete the ones you never use. There is no Template named after development specifically, and Contract & Obligation is the one most schemes end up living in. Sixty-one ship in total, and nothing stops you using more than one in a space.

What this costs you

No per-site fee, and no seat count to argue about

Everything above except the sending is on the free plan, permanently, with no account and no card. Nothing is priced per project, per site or per user, which is the model most software in this category uses and the reason a two-site developer ends up running the whole thing off a shared drive and a memory.

Spaces are unlimited and the bridges joining them are free, so each site becomes its own space with one for the company beside it: this scheme in the first, the next one in the second, the company, its facilities and its professional team in the third, each one click from the others. Each holds twenty nodes, which for a scheme of this size is roughly the conditions, the plots and the parties.

The paid tier is $120 a year and buys exactly one thing: handing a space to somebody who does not have Filamental. On a scheme that is the lender, the solicitor and eventually a buyer's advisers, and it pays for itself the first time a written answer replaces a week of correspondence.

Asked before downloading

Six straight answers

Is Filamental a project management or programme tool?

No. It has no Gantt chart, no critical path calculation, no resource levelling and no task assignment, and it will not tell anybody what to do today. It holds what exists on a scheme and what each thing blocks or triggers, which is the layer above the programme rather than the programme itself. If you run a build programme in dedicated software, keep it.

Can I attach the planning decision notice and the survey reports?

Yes. Drag any file onto the thing it concerns and it attaches there, as many as you like, alongside whatever notes you have written. The decision notice sits on the permission, the ecology report sits on the condition it discharges, the facility letter sits on the loan. Click one and it opens in whatever normally opens it. Nothing is converted and nothing is trapped in a format only we can read.

Does everyone on the project need a copy?

No, and on most schemes only one person ever installs it. Your contractor, solicitor, agent, architect and lender all work in their own systems and will not adopt yours. Publisher turns the space into a document you send as a link or a single HTML file that opens in an ordinary browser, so they read it without installing anything, creating an account or paying anything.

How is this different from a folder of PDFs on the shared drive?

A folder holds documents and knows nothing about what they do. It cannot tell you that a pre-commencement condition blocks the start date, that the start date triggers the first drawdown, or that a clause signed two years ago fires on first occupation. Here those are drawn relationships, so opening the condition shows you everything downstream of it, and the cost of a slip is visible rather than something you work out in your head at two in the morning.

Does Filamental need an internet connection or an account?

Neither. It is a desktop application for Windows, macOS and Linux that reads files on your own disk. There is no account, no sign-in and no telemetry of any kind, so it works the same in a site cabin with one bar of signal as it does in the office, and commercially sensitive detail about a scheme never leaves the machine it is on.

What does Filamental cost for a small developer?

The Personal plan is free permanently, with no account and no card, and there is no per-project or per-site fee, which is the pricing model this category usually reaches for. Spaces are unlimited and the bridges joining them are free, so each site becomes its own space alongside one for the company. Each holds twenty nodes. The paid tier is $120 a year and buys sending a space to somebody who does not have Filamental.

Start with what is outstanding

Open Contract and Obligation and put in the conditions still to discharge

One scheme and an evening is enough to find out whether this suits how you work. Free, no account, no card, and nothing to cancel if it turns out it does not.

Version
0.3.36
Platforms
Win / macOS / Linux
Personal
Free, permanent
Professional
$120 / year